www.process-heating.com | September 2011 | Volume 18, Number 9
HIT THE SPOT
Use our Equipment Overview on Infrared Heaters to target those manufacturers that can deliver heat where you need it.
Periodical Class
23 Achieving Furnace Lining Efficiency 25 Effective Fluid Heating
These heaters will be fully assembled and checked at our factory before delivery.
Get a complete heater package Need a new heater? Get a complete heater package from Heatec. A complete package eliminates hassles, saves you time and saves you money. Our package includes design, manufacturing, factory assembly, on-site setup and startup. We also offer maintenance contracts and provide free phone support. Heaters have many components from a variety of manufacturers. It’s always best to mate these components with the heater and adjust them before the heater is shipped to you. This eliminates most compatibility problems. Our goal is that setup of our heater at your plant will be trouble free, without undue rework. Most setups should only require re-assembly of parts dismantled
for shipping, plus connection of electrical power and piping. Complete factory assembly eliminates last-minute fieldwork that can cause startup delays. It also eliminates buck passing if things don’t go right. Moreover, if a problem develops later, you won’t have to wrangle with a variety of component suppliers to fix it. So, when you buy a new heater, always choose a manufacturer that provides a complete package. Heatec has this capability, which sets us apart from others. Call today and let us answer any questions you have about our heater packages.
HEATEC
( % ! 4 % # DQ$VWHF,QGXVWULHV&RPSDQ\ :,/6215'&+$77$122*$7186$)$;KHDWHFFRP
Where Do I Go for Process Heating Equipment?
omega.com, of Course!
Your single source for process measurement and control products! Now Available with Embedded Internet ⁄8, 1⁄16, 1⁄32 DIN Temperature, Process and Strain Meters and PID Controllers
1
CNi Series Starts at $ 195
MADE IN
USA Visit omega.com/cni_series
© Lobos Chlubny / Dreamstime.com
Liquid Flow Through Heaters Visit omega.com/fth FTH Series Starts at $525
Beaker Heaters Visit omega.com/srbh SRBH Series Starts at $84
Gas Cylinder Warmers GCW Series Starts at $ 820
FREE! OMEGALUX ®
New Horizons® in Electric Heaters
Visit omega.com to order the OMEGALUX® New Horizons ® in Electric Heaters—Part I Featuring 96 Dilbert Cartoons!
Visit omega.com/ gcw_warmers Over-the-Side Immersion Heaters PTH_CTS Series Starts at $210
Visit omega.com/pth_cts_heater
For Sales and Service, Call TOLL FREE
High Temperature Cloth-Faced Infrared Panel Heaters Visit omega.com/qf_heaters QF Series Starts at $ 295
Field Adjustable Screw Plug Immersion Heater/Clean Water and Oil Applications VTS Series Starts at $ 975
Visit omega.com/ vts_series
Shop Online at
®
Dilbert © United Feature Syndicate, Inc.
© COPYRIGHT 2011 OMEGA ENGINEERING, INC. ALL RIGHTS RESERVED
September 2011 Volume 18 • Number 9
www.process-heating.com WEB EXCLUSIVES: READ MORE AT WWW.PROCESS-HEATING.COM Q The Importance of Supplier Collaboration
page
page
18
23
It is important to be knowledgeable about the products that you buy, so you will be aware of what you need, if the product will meet your specifications, and whether or not there is a danger of the product failing due to changing conditions.
Q Top 5 Reasons to Consider a Fluid Tracing System Each system is analyzed using software to predict and prevent failure. Each application is specifically designed for specific heating requirements to offer precise temperature control and precise energy consumption.
Features 18
Heat Exchangers: 10 Tips Stretch Your Heat Exchanger Dollar We all understand the importance of keeping costs low while maintaining efficiency and productivity, and most businesses are quite adept at keeping their internal costs down. This same type of benefit is available to engineers that skillfully make use of a supplier’s sales engineering staff.
20
Dryers: 10 Tips
From heavy industrial facilities such as oil refineries to food production facilities like chocolate factories, many products need to be heated or kept at specific temperatures while being processed.
UPDATED DAILY Q New Products
Q Industry News
ALWAYS ONLINE
Dryer Gears and Pinions Learn what you need to know about dryer gears and pinions — from types to wear to alignment to maintenance tips — to keep them in tip top shape so your dryer runs smoothly.
23
Q Fluid Tracing Applications
Heat Transfer: 5 Tips
Q Archives Q Calendar of Events Q Drying Files columns
Q Energy Notes column Q Equipment Overviews Q Heating Highlights
Q Digital Editions Q Buyers Guide Q Archived Webinars
NETWORK WITH PROCESS HEATING! Quick links on www.process-heating.com/connect point the way.
Achieving Furnace Lining Efficiency An efficient furnace or boiler lining is key to reducing overall maintenance costs and ensuring that facilities run smoothly without undue revenue loss due to downtime.
25
Q Go Mobile
Heat Tracing Effective Fluid Heating Increasing and maintaining temperatures in process piping is important to the operation of many industrial facilities. Selecting a heating system is not usually a quick and easy decision because there are short- and long-term cost and operability implications. Heat tracing systems can provide effective and efficient fluid heating.
28
Equipment Overview: Infrared Heaters Hit the Spot Use our Equipment Overview on Infrared Heaters to target those manufacturers that can deliver heat where you need it. Online and in print, it helps expedite the selection process.
Columns & Departments 6 8 16 32 32
Editor’s Page Inner Workings Calendar Product Take-Off Products
36 37 37 38
Classified Directory Subscription Card Advertiser Index Places & Faces
Use your smart phone to read Process Heating, wherever you are! Simply visit http://gettag.mobi/ with your phone’s browser to install the Microsoft Tag app. Then, point your phone’s camera at the tag below to be taken to our current issue online — instantly. The reader works on most current smart and advancedd ffeature phones, h includi l d ing Windows Mobile (5.5 and above), iPhone, Blackberry, Symbian and J2ME.
About the Cover An infrared preheat tack oven, manufactured by the Minneapolis-based BGK business unit (www.bgk.com) of ITW Finishing Equipment Americas, preheats the windshield vinyl layer between the two pieces of glass that make up a windshield. Preheating the vinyl layer prior to the pinch roll aids in removing air from the lamination. For more about infrared heating, turn to page 28.
PROCESS HEATING (ISSN 1077-5870) is published 12 times annually, monthly, by BNP Media, 2401 W. Big Beaver Rd., Suite 700, Troy, MI 48084-3333. Telephone: (248) 362-3700, Fax: (248) 362-0317. No charge for subscriptions to qualified individuals. Annual rate for subscriptions to nonqualified individuals in the U.S.A.: $115.00 USD. Annual rate for subscriptions to nonqualified individuals in Canada: $149.00 USD (includes GST & postage); all other countries: $165.00 (int’l mail) payable in U.S. funds. Printed in the U.S.A. Copyright 2011, by BNP Media. All rights reserved. The contents of this publication may not be reproduced in whole or in part without the consent of the publisher. The publisher is not responsible for product claims and representations. Periodicals Postage Paid at Troy, MI and at additional mailing offices. POSTMASTER: Send address changes to: PROCESS HEATING, P.O. Box 2146, Skokie, IL 60076. Canada Post: Publications Mail Agreement #40612608. GST account: 131263923. Send returns (Canada) to Pitney Bowes, P.O. Box 25542, London, ON, N6C 6B2. Change of address: Send old address label along with new address to PROCESS HEATING, P.O. Box 2146, Skokie, IL 60076. For single copies or back issues: contact Ann Kalb at (248) 244-6499 or
[email protected].
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
5
By Linda Becker
Commentary Be a Process Heating Paparazzi
You Ought to Be in Pictures Have you ever noticed that when it comes to pictures, there are two types of people: those who labor assiduously behind the camera, and those who happily pose and even mug for it? I fall firmly in the former camp and find fault with most pictures of me. I usually ask the photographer not to use or keep the photo — and get blithely ignored. Fortunately, since I’m so often the photographer, I have a great collection of photos from events large and small. Cute cat and dog poses? Check. Sunrises and sunsets over water? Check. Family and friends through the years? Check. Cool work shots? Ch… well, not so much. And that’s where you come in. During my years with Process Heating, I’ve learned about the manufacturing intricacies of such diverse products, from personal hygiene products to car parts, to gelatin and kraft paper, and everything in between. Yet I have relatively few photos. So, for an upcoming feature, I’d like you to be my photographer and share the coolest heat processing photos you’ve taken. Now, we don’t want to violate anyone’s confidentiality agreements or get anyone in hot water. Remember to ask permission before you snap and give credit where it is due. But once that’s taken care of, here’s how to send it to us:
• Upload to our Facebook wall by visiting www.facebook.com/ ProcessHeating. (You will need to “Like” the page in order to post.) • Post it on your own site or blog and share a link in our LinkedIn group, Process Heating Network, or tweet a link to @ProcessHeating. (Visit www.process-heating.com/connect for links.) • Send via e-mail to
[email protected]. Just remember, you must be the owner of any image you submit, and by submitting it, you are granting Process Heating and BNP Media a limited license and right to publish your submission. Complete details are posted on www.process-heating.com, or contact me if you have any questions. And to get things started, I promise to post a cute cat picture just as soon as we have our first submission. So get snapping!
Linda Becker, Associate Publisher and Editor,
[email protected] SCRs Need Heatsinks SCRs generate heat. Up to 2 watts/amp per phase. This heat must be dealt with or it will destroy your control. All Payne Engineering controls have integral heatsinks designed, tested, and proven at 50° C ambient to dissipate the damaging heat produced by semi conductors without fans or derating curves.
Only Payne Engineering controls have these exclusive “Silicon-Protection” features • 2ms semiconductor fuses • Vbo voltage protection • 50°C ambient heatsinks that ensure long, reliable, trouble-free service. Nearly 40 years of experience designing, building and applying trouble-free SCR controls.
Call 1-800-331-1345 for Complete SCRs Box 70 Scott Depot, WV 25560-0070 • Fax: 304-757-7305 E-mail:
[email protected] • www.payneng.com
6
|
SPH06074Payne02Red.indd e p t e m b e r 2 0 1 1 • Process 1 Heating
5/21/07 9:58:46 AM
Inner Workings
Thermal Battery Coating Process to Be Industrialized
Photo by Randy Montoya
A thin-film coating process for manufacturing thermal batteries — first used in nuclear weapons and other munitions, and which was invented at Sandia National Laboratories in Albuquerque, N.M. — will be industrialized under a new corporate partnership with a Maryland company. The process could lead to the creation of lighter batteries. A thermal battery is a non-rechargeable single-use energy source that can remain inert for years at room temperature before becoming activated at temperatures as high as 1,100°F (~600°C). The thin-film coating process changes the way some thermal batteries have been made since the 1950s. Sandia researchers also are looking into whether a patented binder used in its thin-film coating process has commercial applications. Examples include lithium-ion batteries in electric and hybrid vehicles and in batteries used in the petroleum industry when drilling deep underground in hot geothermal environments. Sandia and ATB Inc., a Cockeysville, Md.-based manufacturer
8
|
S e p t e m b e r 2 0 1 1 • Process Heating
of thermal batteries, have signed a cooperative research and development agreement to test the coating process for large-scale industrial production. “We can take the developments that we’ve had in the lab, scale up the quantities of materials that we use and, instead of producing tens of batteries, we can produce hundreds of batteries in ATB’s facility,” says Tom Wunsch, manager of Sandia’s Advanced Power Sources Research and Development Group. “It’s beneficial to us to have an industrial partner to work with on these issues and for them to have this technology.” Guy Chagnon, CEO of ATB, says his company and Sandia have been working independently on changing the process for producing thermal batteries. The goal “is to industrialize a new process, to manufacture, to build and to test the battery,” he says. “We’re putting our resources together to reduce the size and the cost of thermal batteries.” Sandia’s expertise in thermal batteries stems from their use in nuclear weapons and other munitions, where they must be extremely reliable, remain inert for 30 years at room temperature and then spring into action on a moment’s notice. Sandia has developed about 30 thermal battery designs since 1975. Sandia researcher Frank Delnick led the effort to make the thermal battery components as thin-film coatings instead of pellets. The process will work best for thermal batteries that are active for a fraction of a second to a few minutes, he says. Traditional thermal batteries are made by pressing powdered materials into electrochemically active pellets used as the anode, cathode and separator of the battery. The pellets must be a certain thickness to maintain mechanical integrity and prevent them from falling apart Sandia researcher Frank Delnick works with a thin-film coating he developed to make thermal battery components.
when handled. The amount of material required to achieve mechanical stability can be up to 10 times greater than what is needed to make the battery work. Therefore, considerable reduction in size can be achieved by making the components thinner, Delnick says. The goal of the agreement is to jointly develop thinfilm coatings that will cut the time and materials need to make thermal batteries. Current thermal batteries are cylindrical and range in size from a man’s thumb to a one-pound coffee can. The first thermal battery made using the process was slightly thicker than a postage stamp and about the size of a quarter. Chagnon says if the research and development are successful, large-scale manufacturing could begin by late 2012. The process uses relatively inexpensive equipment common in the paint industry that coats the battery components as thin films onto stainless steel foil. The coatings are held together and bonded to the foil using a patented binder. The binder must withstand temperatures of about 660 to 1,100°F (350 to 600°C), which are required to melt the salt electrolyte and activate the battery. Once activated, the binder must remain chemically and mechanically stable throughout the discharge of the battery without emitting gas or producing other side reactions that could adversely affect the performance of the battery. The coated materials in the batteries are much tougher than those in current models, says Delnick, who expects that thin-film thermal batteries will perform much better in high-shock environments and will be much more amenable to automated manufacturing. “Since the parts are more robust, you don’t have to handle them as gingerly,” he says.
Owens Corning Orders Abatement System Pro-Environmental Inc., Rancho Cucamonga, Calif., has been awarded a contract to supply a regenerative thermal oxidizer to Owens Corning Corp.’s facility in Aiken, S.C. The unit will be installed on a mat line dryer system as part of the plant’s
Industrial Grade
Gasification Commercially Proven. Reduces Emissions. Scalable To Your Project. Available Now. Our technology can lower your price of fuel up to 50 percent PHG’s new generation of downdraft gasification equipment solves financial and environmental problems by providing a steady supply of clean burning fuel gas. This energy can be converted from waste material that would otherwise have been landfilled…or from renewable biomass sources. Find out more…and contact us for an initial benefit analysis and to discuss feedstock options:
www.phgenergy.com/php/
615-251-8619 Delivering Affordable Renewable Technology Scan this with your smartphone’s QR code reader and visit our website.
Inner Workings
Oxidizers Ovens Furnaces
expansion. The Pro-Environmental abatement system is a multi-canister regenerative thermal oxidizer designed for low maintenance and high uptime reliability, and a thermal efficiency of 95 percent or greater. The oxidizer manufacturer has provided multiple units to Owens Corning in the past 20 years. Watch a video and get more information about ProEnvironmental at www.pro-env.com.
Finishing Program Expands to 52 Hours of Sessions The Fabtech 2011 conference of the Chemical Coaters Association International, Taylor Mill, Ky., has added to its lineup of industrial finishing technologies sessions. Set for November 14 through 17 at Chicago’s McCormick Place, Fabtech will offer 52 hours of presentations, including those on going green, energy and cost savings, and advancements in coatings technologies. Sessions will cover
the basics of finishing processes, from powder and liquid coating to electrocoating and porcelain enamel. For more experienced finishers, advanced sessions include the finishing of large and heavy parts, case studies on powder coating systems, and structured troubleshooting in finishing processes. Fabtech encompasses all metal-working technologies, which gives attendees the opportunity to attend conference sessions on metal-forming, fabricating, stamping, tube and pipe, and welding. See the finishing technologies conference schedule by going to www.ccaiweb.com, and clicking on the
¾ Oxidizers RTO Recuperative Catalytic Ovens & ¾ Furnaces Conveyorized Low Temp. & High Temp. Batch
Protect finned tube coils from corrosive atmospheres with Heresite’s baked phenolic coating. It is the proven choice in processes around the world for service in corrosive fumes and salt atmospheres. For Shell and Tube Heat Exchangers, Heresite can provide protection with the licensed Saekaphen Si series. Typically used in heat exchangers, condensers
936-273-3300
[email protected] www.epconlp.com 10
|
S e p t e m b e r 2 0 1 1 • Process Heating
and evaporators, tube bundles can be protected from many acids, salts, water and alkaline services. Heresite coatings reduce maintenance costs with less downtime and permit the use of less costly alloys to reduce capital costs. Learn the whole story on corrosion resistance by contacting your local Heresite representative. 822 South 14th Street, P.O. Box 250 Manitowoc, WI 54220 Phone: 920-684-6646 • 800-558-7747 Fax: 920-684-0110 www.heresite.com E-mail:
[email protected] Inner Workings show tab on the left side of the home page. CCAI members will receive a discount for registering early, and for registering for multiple sessions.
2 Solar Plants Select Solutia’s Fluid A Therminol heat transfer fluid from St. Louis-based Solutia Inc., has been chosen for use in two solar power plants in Spain. Synthetic fluid Therminol VP-1 will be used in the projects, which are each 50 MW solar power plants with thermal storage. Heat transfer fluid is used in the trough-shaped mirror assemblies to absorb concentrated sunlight, heating up to about 752°F (400°C). The stored heat can be used to produce energy during periods of little to no sunlight, including evening hours. The heated Therminol is used to generate steam, which drives the power-generating turbines. For more information on the heat transfer fluids, go to www.therminol.com.
roughly eight times higher than ever previously reported for a solar thermoelectric device such as one that produces electricity from solar heat. It does so by generating and harnessing a temperature difference of about 392°F (200°C) between the interior of the device and the ambient air. The concept “is very radical,” says Gang Chen, MIT’s Carl Richard Soderberg Professor in Power Engineering and director of the Pappalardo Micro and Nano Engineering Laboratories, who co-authored the paper with MIT doctoral student Daniel Kraemer and collaborators from Boston
Solar Power with a Side of Hot Running Water Researchers at the Massachusetts Institute of Technology in Cambridge, Mass., and their collaborators have come up with an unusual, highly efficient and possibly less expensive way of turning the sun’s heat into electricity. Their system, described in a paper published online in the journal Nature Materials, produces power with an efficiency
SYSTEM DOWN!
MultiTherm’s Heat Transfer Fluids Keep All Systems
GO! Run your system more efficiently, for longer periods, with less down time. Make System Maintenance a Priority!
1-800-339-7549 www.multitherm.com www.process-heating.com • S e p t e m b e r 2 0 1 1
|
11
Inner Workings College and GMZ Energy. The work is funded by the SolidState Solar-Thermal Energy Conversion Center, an Energy Frontier Research Center at the U.S. Department of Energy. While solar thermal electricity systems are not a new idea, they typically involve vast arrays of movable mirrors that track the sun and focus its rays on a small area. The new approach uses flat stationary panels similar to traditional solar panels, eliminating the need for tracking systems. Like the silicon photovoltaic cells that produce electricity when struck by sunlight, Chen’s system is a solid-state device
with no moving parts. A thermoelectric generator, placed inside a vacuum chamber made of glass, is covered with a black plate of copper that absorbs sunlight but does not reradiate it as heat. The other side of the generator is in contact with ambient temperatures. Placed in the sun, the entire unit heats up quickly, even without facing the sun directly. The device requires much less material than conventional photovoltaic panels and could therefore be much less expensive to produce. It also can be integrated into solar hot water systems, allowing the expenses of the structure and installation to serve two functions at once. Such solar water heaters are rarely seen in the United States, but are already a highly successful massmarket product in China and Europe where they provide households with hot water and in some cases space heating as well. The materials used to build such solar thermoelectric generators, made through a nanostructured process, were developed jointly a few years ago in Chen’s MIT lab and in co-author Zhifeng Ren’s lab at Boston College. Their teams have continued to work on improving these materials and integrating them into complete systems. Chen points out that the DOE has programs to develop thermoelectric systems, mostly geared toward harnessing waste heat from car and truck engines. He says that solar applications for such devices also can have an important role to play in reducing carbon emissions.
DMV DMV Solution The DUNGS Dual Modular Valve (DMV) system provides a compact, integrated solution for reliable combustion control. Proof of Closure using a Valve Proving System or Valve Seal Overtravel-Interlock to meet code requirements
DMV Simplicity Comply with double valve requirements with a single control. The DMV features two valves in one body, available in single stage, two stage, fast opening or slow opening. Systems from 1/2” NPT to 5” ISO flanged.
DMV Advantage
www.dungs.com/usa 12
|
S e p t e m b e r 2 0 1 1 • Process Heating
DMV-DLE 702/622
Streamline your combustion system by saving space, time and labor with the DMV by directly mounting a pressure regulator, pressure switches, butterfly control valve, valve proving system, and/or a vent line connection. Call, Fax or E-Mail for more information
Karl Dungs Inc. 3890 Pheasant Ridge Drive NE Blaine, MN 55449 Phone: (763) 582 1799 Fax: (763) 582 1799 E-mail: info@ karldungsusa.com
Did you know that 90% of heat transfer fluid breakdowns are caused by equipment issues? If you just check your hot-oil on a regular basis you could practically eliminate unplanned shutdown or loss of production. The easy way to do this is by conducting a Fluid Analysis. Because Fluid Analysis isn't just to check your fluid; it's to test your system. When we test your fluid (we suggest annually or more frequently for demanding service) the values we get from boiling range, viscosity, and acidity tell us what's going on in there. Better yet, together with a one-to-one system review with you, those same test results can help pinpoint emerging issues with oxidation, overheating, or possible mismatches in those interrelated components that could lead to a downtime-causing problem. This can help you keep the system up when it's supposed to be up, and know in advance if any corrections are needed for when you do have scheduled downtime. Your system runs better, your fluid lasts longer, and your process earns its keep. The Fluid Services Program team of engineers can get deep into your process with you from the design stage, customizing maintenance plans, process expansions or, in cases where the Fluid Analysis and system review suggests it, just a good cleanout
of your system with one of Paratherm's three specialized system cleaners. Paratherm's nine heat transfer fluids are designed to cover a broad temperature range as well as a range of compatibility and performance criteria. The fluid chart below can give you a feel for their specifications, but to narrow it down to the right product for your application all it takes is a short conversation with one of Paratherm's sales engineers. Eliminate the downside risk and call Paratherm today or check us out on the web.
Get a helping hand
Services Fluid Analysis Fluid Maintenance Training Paratherm Paratherm Paratherm Paratherm Paratherm Paratherm
Troubleshooting Consulting
Products Paratherm Paratherm Paratherm Paratherm Paratherm Paratherm
CR® HTF MR® HTF MG™ HTF LR™ HTF HR™ HTF HE® HTF
NF® HTF OR® HTF GLT™ HTF SC® Cleaner LC™ Cleaner AC™ Cleaner
HEAT TRANSFER FLUIDS
4 Portland Road, • West Conshohocken PA 19428 USA
800-222-3611
610-941-4900 • Fax: 610-941-9191
[email protected] www.paratherm.com
®
®
Listing and temperature range chart for all Paratherm heat transfer fluids.
Copyright© Paratherm Corporation 2011
Gas Burner Products • • • • •
Tubular burner Gas IR burner Hydrogen burner Ribbon burner Box burner
Inner Workings The system would not be a substitute for solar photovoltaics, Chen says, but offers another way of tapping into the enormous amount of solar energy that bathes the Earth every day. And because it can be piggybacked onto the existing solar hotwater industry, the thermoelectric device could be a relatively inexpensive addition, with no subsidies required, he says.
Edible-Oil Plant Order Includes Heat Exchangers
Heat: 9-50,000,000Btu/H Single digit NOx emission Premix Atmospheric IR. Metal fiber matrix Made in USA
230 Springview, Commerce Dr. S100, Debary, FL 32713 Tel: 386-668-7895 • www.mft-co.com
A vegetable-oil plant in India has placed a $10.2 million order for separators, mixers and heat exchangers from Alfa Laval, Lund, Sweden, for refining different types of crude oils such as soy bean oil into high quality oils. “We continue to see a good development in India,” says Lars Renström, Alfa Laval Group president and CEO. “The latest order confirms the positive trend in the country’s food and vegetable oil industry.” The system should be operational in 2012. According to Alfa Laval, the Indian edible oil industry is expected to grow six percent annually by 2015. The growth in India and other developing countries has been driven by increased living standards and a growing population.
Metso Replacing Chemical Recovery Boiler PH09114MFT.indd 1
8/24/11
For over 50 years, we have provided Electrical Safety Equipment for the Industry. For complete info, contact us at
[email protected]. Visit our website at www.protectioncontrolsinc.com
14
|
S e p t e m b e r 2 0 1 1 • Process Heating
To combust recovered chemicals more efficiently, UBE Chemicals, Bangkok, has ordered a chemical recovery boiler. 10:02 AM UBE produces nylon from raw materials, and the production process releases chemicals that can be combusted. Helsinki-based Metso will provide a system that is based on its recovery boiler concept used in the pulp and paper industry. Metso will replace the entire pressure vessel with a newly designed incinerator situated within the existing structure. The current combustion process will be replaced with a complete solution in terms of recovery and end-combustion of chemicals, with a next summer startup scheduled. “Metso has previously performed a similar replacement for UBE Chemicals in Spain when a new combustion plant for chemicals was installed with exceptional results,” says Watchara Pattananijnirudorn, UBE Thailand executive vice president. The pressure-vessel concept will utilize burners at two levels where fuels are sprayed into the burning-chamber section of the boiler. Combustion air then is added in a three-level air system in which the air ports are equipped with automatic rodding devices for remote operation. The firing technique reduces the amount of sodium carbonate carryover in flue gases and heat is recovered in the heatabsorbing surfaces consisting of water screens, convection and economizer. The various heat absorption areas are cleaned by soot blowers. The smelt is discharged to the dissolving tank through the water-cooled smelt spout, and the spout is designed for automatic rodding by Metso’s DeckHand, an industrial type robot.
N\Ëm\_\cg\[Ylj`e\jj\jjXm\\e\i^pXkefZ_Xi^\% K_\en\Ëm\gX`[k_\d%N\Ë[c`b\kf[fk_\jXd\]fipfl%
N\^Xm\JZ_cfjj\i=fi^\ /'#'''kfgXp]fiX dXjjYXcXeZ\X`i]l\ciXk`f
;f\jk_Xkjfle[c`b\Xcfkf]_fkX`i6CXjkp\XifliYlj`e\jj Zljkfd\ijjXm\[fm\i.%-d`cc`feYphlXc`]p`e^]fifli \e\i^p$\]ÔZ`\eZpgif^iXdj%
Zfekifcc\ik_Xkb\\gjk_\
K_\ek_\phlXc`Ô\[kfi\Z\`m\fm\i-%+d`cc`fe`ei\YXk\jXe[`eZ\ek`m\j%
n`k_`eXknf$g\iZ\ek
K_`jp\Xin\Ëi\f]]\i`e^Ylj`e\jj\ji\YXk\jXe[`eZ\ek`m\jf]lgkf*0 d`cc`fe%K_\i\Xi\dXepnXpjkfZcX`dgXikf]k_Xk%PflZflc[`ejkXccXep hlXc`]p`e^\hl`gd\ekfigifZ\jjk_Xkd`e`d`q\j_\Xkcfjj\j#jlZ_Xj1
kfc\iXeZ\YXe[%È@Ëm\
]lieXZ\Ëj^Xj&X`id`okli\
i\XZ_\[\]ÔZ`\eZ`\j@
@ejlcXk`fe
_X[eËkk_fl^_kgfjj`Yc\#É
I\^\e\iXk`m\Ylie\ij
jX`[AXd`\=fnc`\#j`k\
<e\i^p$\]ÔZ`\ekYlie\ij#b`cej#i\]iXZkfi`\j
dX`ek\eXeZ\dXeX^\i%
?\Xki\Zfm\ip\%^%#]fidXk\i`Xcgi\_\Xk I\[lZk`fef]c\Xbj&_fkjgfkj Cfn$[\ej`kpi\]iXZkfi`\j @dgifm\d\ekjfeZfekifcc\[\em`ifed\ekjk_ifl^_k\dg\iXkli\ le`]fid`kpXe[\]ÔZ`\ekdXk\i`Xc_Xe[c`e^ Efkjli\_fnkfjXm\\e\i^p6N\Ëccm`j`kpfli]XZ`c`kpXkefZ_Xi^\Xe[ j_fnpfl_fn%:fekXZkpfliJflk_\ie:Xc`]fie`X>Xj:fdgXepXZZflek \o\Zlk`m\fiZXccljXk($/''$/+.$,+0.% =fidfi\[\kX`cj#m`j`kjfZXc^Xj%Zfd&`eZ\ek`m\j% K_\j\gif^iXdjXi\]le[\[Yp:Xc`]fie`Xlk`c`kpZljkfd\ijXe[X[d`e`jk\i\[YpJflk_\ie:Xc`]fie`X>Xj:fdgXeple[\ik_\Xljg`Z\jf]k_\:Xc`]fie`XGlYc`ZLk`c`k`\j:fdd`jj`fe% K_\j\gif^iXdjdXpY\df[`Ô\[fik\id`eXk\[n`k_flkgi`fiefk`Z\Xe[Xi\gifm`[\[kfhlXc`Ô\[Zljkfd\ijfeXÔijk$Zfd\#Ôijk$j\im\[YXj`jlek`cgif^iXd]le[jXi\efcfe^\i XmX`cXYc\%8[[`k`feXcZfe[`k`fejXggcp%:ljkfd\ijdljkd\\kXccgif^iXdhlXc`ÔZXk`fej`efi[\ikfi\Z\`m\Xepi\YXk\jfi`eZ\ek`m\gXpd\ekj%Jflk_\ie:Xc`]fie`X>Xj:fdgXep`jefk i\jgfej`Yc\]fiXep^ff[jfij\im`Z\jj\c\Zk\[Ypk_\Zljkfd\i%<e\i^pjXm`e^j\jk`dXk\jYXj\[fe%,'g\ik_\idjXm\[% )'((Jflk_\ie:Xc`]fie`X>Xj:fdgXep%KiX[\dXibjXi\gifg\ikpf]k_\`ii\jg\Zk`m\fne\ij%8cci`^_kji\j\im\[%
((.'').'*((
Calendar of Events October 3-4 — Web Coating and Drying Seminar, Philadelphia. Call (803) 802-7820 or visit www.convertingschool.com. 4-6 — NAI Coatings Show, Cincinnati. Call (832) 585-0770 or visit www.thenaicoatingshow.com. 4-6 — Steam System Specialist Qualification Training, Downey, Calif. Call (562) 803-7570 or visit www.eere. energy.gov/industry. 11-13 — Vapor Control Systems Seminar, Tulsa, Okla. Call (918) 234-5710 or visit www.johnzink.com. 15-19 — Weftec: The Water Quality Event, Los Angeles Convention Center, Los Angeles. Hosted by Water Environment Federation (WEF). Call (800) 666-0206 or visit www.weftec.org. 18-20 — Ipsen-U Vacuum Furnace
Technical Training, Rockford, Ill. Call (815) 332-2518 or visit www.ipsenusa.com.
Marriott Waterside, Tampa. Call (610) 832-9729 or visit www.astm.org.
20-21 — Interphex Puerto Rico, Puerto Rico Convention Center, San Juan. Hosted by International Society for Pharmaceutical Engineering (ISPE). Call (888) 334-8704 or visit www.interphexpuertorico.com.
31-November 2 — ASM Heat Treating Society Conference and Exposition, Duke Energy Convention Center, Cincinnati. Call (800) 336-5152 or visit www.asminternational.org.
November 21 — Process Heating Systems Management Workshop, Dayton, Ohio. Call (937) 216-9452 or visit www.eere.energy.gov/industry.
1-3 — Chem Show - Chemical Processes Industries (CPI) Show, New York. Call (203) 221-9232 or visit www.chemshow.com.
24-27 — Air Quality VIII: An International Conference on Carbon Management, Mercury, Trace Elements, SOX, NOX and Particulate Matter, Gateway Marriott, Arlington, Va. Call (701) 777-5174 or visit www.undeerc.org/AQ8.
7-11 — InfraMation Thermography Conference 2011, Bally’s Hotel, Las Vegas. Call (866) 872-4647 or visit www.inframation.org.
30-November 2 — ASTM Committee C16 on Thermal Insulation Meeting,
December 13-15 — Power-Gen International, Convention Center, Las Vegas. Call (918) 831-9160 or visit www.power-gen.com.
y Specif
Aitk en Process Modules
Aitken offers a variety of infra-red metal sheath heaters for virtually any drying application. They feature heavy-duty elements designed for continuous operation at ambient temperatures up to 350 o F. They afford high shock resistance - both physical and thermal and there are no ceramic parts to deteriorate or break. Most units can be shipped within 24 hours. Visit our website at www.aitkenproducts.com.
1-800-569-9341 16
|
S e p t e m b e r 2 0 1 1 • Process Heating
Processing Solutions that Fit Conference Partner:
AlChE
November 1-3, 2011
Media Partner:
ork City
See It in Action in the Exhibit Hall: Over 250 Exhibitors…and counting Process Control & Automation Center Presentations in the New Product Technology Theater
Learn About It in the Classroom: The AIChE Northeast Regional Conference at the CHEM SHOW Special Track: Nanotechnology Workshops and Conference
Don’t Miss the #1 Process Equipment & Technology Event FREE Advance Registration: www.chemshow.com Endorsed by:
Produced and managed by:
Heat Exchangers
STRETCH
Your Heat Exchanger Dollar By Paul Boedecker and Gregg Fayer, Xchanger Inc.
W
e all understand the importance of keeping costs low while maintaining efficiency and productivity, and most businesses are quite adept at keeping their internal costs down. They are able to do this because they are experts in their respective fields. This same type of benefit is available to engineers that skillfully make use of a supplier’s sales engineering staff. As design engineers taking calls at a company that designs and manufactures heat exchangers on a build-to-order basis, experience through the years has shown that some people consistently get more value for their dollar than others. They are not necessarily heat transfer experts, but they understand the fundamentals well enough to know how their specifications affect the heat exchanger’s cost. They also are masters at tapping the knowledge of their suppliers and working together with them to come up with appropriate designs. Would you like to become a savvier shopper as well? Here are 10 tips on heat
Understanding your heat exchanger can help get more heat transfer bang for your buck. exchanger fundamentals that you can use to get the most out of your supplier.
1 Say What You Want
Tell your supplier how you expect the heat exchanger to benefit the process. Most heat exchangers are complex, intricately engineered products and, if you speak directly with a design engineer who knows the product and its application backward and forward, they are likely to have solved the same type of problem many times before. Their experience and knowledge generally come free of charge.
2 Master the Approach
Understand the concept of “approach temperature.” The approach temperature refers to the difference in temperature between the exiting process fluid and the entering service fluid. For example, if an
ambient-air fan-cooled heat exchanger cools hot water to 40°F in a 30°F ambient, the approach is 40°F - 30°F = 10°F. In other words, the approach temperature represents how closely the water temperature approaches the air temperature. The approach is fairly constant for many heat exchangers, so it is a handy way to think about their performance under varying conditions.
3 Know the Conditions
Understand the concept of a “design condition.” Few things in this world are the same every day, including the flow, composition and temperature of the fluids flowing through heat exchangers. Although heat exchangers can function properly with all kinds of variability, it is not possible to design to a range. A good design condition factors in the variability the heat exchanger will experience, so it will perform adequately under all required conditions.
Overlook 4 Don’t the Basics
Know the basics of what makes a heat exchanger work. A fundamental relationship of heat exchanger performance is described in terms of energy transferred (Q), by just two equations:
Understanding the concept of approach temperature will help ensure that an air-cooled heat exchanger operates properly. 18
|
S e p t e m b e r 2 0 1 1 • Process Heating
Fluid (Both Hot and Cold): ˙ • cl • 6T Q=m where ˙ is mass flow. m cl is specific heat. 6T is the temperature difference (T1 - T2).
Heat Exchangers Heat Exchanger:
A good design condition factors in the variability the heat exchanger will experience, so it will perform adequately under all required conditions.
Q = U • A • 6Tmean where U is the U Value, which is determined by the vendor. It is specific to a particular design and application. A is the surface area. 6Tmean is the mean temperature differential between hot and cold fluids in a particular heat exchanger.
for gases. In process systems with blowers and heat exchangers, gas density is constantly changing and flow specifications in volume terms (cfm or m3/hr, for instance) only have meaning if they include a density or reference temperature and pressure.
˙ • cl • 6T)Cold-Fluid = m ˙ (cl •6T)Hot-Fluid = U • A • 6Tmean Q = (m
If there is phase change involved — either condensation or evaporation — things become a little more complicated, but the relationships are very similar.
5 Factor In Fouling
If you want some “safety factor” in a heat exchanger, fouling factors must be considered. There are other methods used to attempt to generate safety factors; however, they will very likely come with unintended (and sometimes catastrophic) consequences. Here are some examples of what not to do. • Specifying Greater Flow. This method requires larger flow-area to maintain acceptable pressure drop. If the actual flow is a lesser value, the fluid temperature will be a lesser value as well, resulting in a reduction in U value. The decline in U may not be offset by the decline in Q. In other words, a heat exchanger designed for 150 percent of the actual flow may not work properly with 100 percent flow. • Specifying Greater Fluid Temperature Change. Because heat exchangers are largely defined by their mean temperature difference, a decision to add safety factor by designing to cool an extra 10°F ˙ • cl will skew not only the load Q = (m • 6T), but also the 6Tmean; therefore, the area A = Q / (U • 6Tmean). • Specifying a Percentage Excess Area. This case has the least propensity to cause error, but if the concern is based on silty cooling water or oil mist in a process airstream, this approach treats both the hot and cold side the same and fails to properly address the concern with any precision. The result is likely a design that will be short on performance and long on cost.
6 Avoid Bottlenecks
In heat exchanger design, bottlenecks move. Depending on the heat exchanger construction and process conditions, it could be surface limited, flow limited or 6Tmean limited. Consider a heat exchanger designed for a very close approach: changing the amount of surface area or service flow has a much smaller effect than increasing the approach. It is “approach limited.” With other operating conditions, the same equipment could be surface limited.
7 Keep an Eye on Materials
Materials of construction affect cost, U value and pressure drop. While it is obvious that some metals are more costly than others, there are a several less obvious factors that enter into heat exchanger design. The thermal conductivity and cost of fabrication are different for various metals, so the cost of a heat exchanger made from different metals will often be driven by these factors.
Through 8 Think Installation
Though the type of installation — electrical, indoors, outdoors, ventilated, airconditioned, heated, nozzles sizes/types, etc. — may not seem pertinent to the process, it really is. For example, consider a water-cooled heat exchanger outdoors in a Minnesota winter. Enough said.
9 Understand Their Strengths
If you need to heat or cool air or another gas, understand that heat exchangers are designed for mass flow. This is not much of an issue for liquids, which have nearly constant densities, but it is not the same case
Overlook 10 Don’t Humidity
If your application involves cooling humid air or any gas with humidity that condenses, it is important to have a good understanding of humidity. During a typical 24-hour period, relative humidity will go from 100 percent when the dew falls when it’s 60°F (15.5°C) in early morning to 30 percent during the afternoon when it is 90°F (32°F). Because the daily range of humidity is 30 to 100 percent and the temperature range is 90 to 80°F (32 to 27°C), do not make the mistake of thinking a good design condition is 100 percent at 90°F. Those conditions may both happen, but not at the same time. A far better way to think of humidity is in terms of dewpoint. Unlike relative humidity, the dewpoint does not change with respect to temperature. It is only relative to pressure. So take these fundamentals and better understand how your specifications affect the heat exchanger’s cost. PH Paul Boedecker and Gregg Fayer are engineers with Xchanger Inc., Hopkins, Minn. The company can be reached at (952) 933-2559 or www.xchanger.com.
WEB EXCLUSIVE The Importance of Supplier Collaboration It is important to be knowledgeable about the products that you buy, so you will be aware of what you need, if the product will meet your specifications, and whether or not there is a danger of the product failing due to changing conditions. READ MORE @ WWW.PROCESS-HEATING.COM
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
19
Dryers
Dryer Gears and Pinions Knowing these 10 basic tips will help keep your dryer drive system up and running.
By Roland Sutter, Industrial Kiln and Dryer
T
his article introduces you to everything you need to know about dryer gears and pinions — from types to wear to alignment to maintenance tips — and how to keep them in tip top shape so your dryer runs smoothly.
Helical 1 Consider and Spur Gears
Helical gears are preferred over spur gears for large equipment because they require a smaller face width for the same horsepower rating. On a spur gear, only one tooth is in contact with the surface at one time. In the case of a properly designed helical gear, overlapping occurs, and there is always a portion of tooth contact at the pitch line. In other words, before the engaged tooth loses contact, the next tooth is engaged. A In gear and pinion tooth geometry, it is important to understand pressure and tooth angles. 20
|
S e p t e m b e r 2 0 1 1 • Process Heating
term for this factor is the face contact ratio, which must be greater than one. A helical gear also is smaller in face width, with less weight and less manufacturing cost than a spur gear when design conditions warrant its use. Another factor to consider is the thrust load applied to the pinion pillow blocks due to the fact that the teeth are cut at an angle (helix angle). Many processors do not choose to employ helical gears because they consider them less forgiving and have to be kept in alignment more often. This is not really the case. A spur gear is more applicable on lower horsepower drives because, in order to maintain the proper contact ratio, the helix angle gets too large, increasing the gear cutting cost and thrust load.
Gear 2 Understand Rating Factors
The American Gear Manufacturers Association (AGMA) established the AGMA 6004 rating system in the early 1980s to define the engineering standards for designing gears and pinions. These
standards consider factors such as rotations per minute (rpm), face contact, tooth geometry, load distribution and alignment, hardness, dynamic factors, machining quality, allowable contact stress and allowable bending stress. When choosing a gear, you must familiarize yourself with these standards and ask the right questions.
About 3 Learn Undercutting of a Gear
Undercutting results in removal of a portion of the involute profile below the pitch line. Undercutting greatly reduces overlapping and tooth strength and constitutes a problem. Ignoring the fact that 20° full depth involute pinions with less than 18 teeth will exhibit undercutting in the cutting process is a mistake. Undercutting can be avoided in several ways: • By increasing the pinion’s outside diameter. • By increasing the addendum and decreasing the outside diameter of the gear.
Typical Tooth Profile 1 DP
1.25 DP
1.5 DP
Typical Pressure Angles 20˚ Full Depth 25˚ Full Depth 14.5˚ Stub Tooth
Addendum Whole Depth
192 Tooth Girth Gear
23 Tooth Pinion
Dryers • By decreasing the addendum the same amount as the pinion.
Leaf Spring Mount
The action does not change the gears center distance, pitch diameters or whole depth, but does modify the tooth thickness.
4 Consider Tooth Geometry
In gear and pinion tooth geometry, it is important to understand pressure and tooth angles. A 20° pressure angle, which is most common, should not be combined with a 25° angle tooth, or the gear will not work properly. Many will find that mismatching these measurements may sometimes result in a satisfactory operation, but in the end will result in failure.
5 Remember Gear Lubrication
AGMA provides clear guidelines for the lubrication of gears. Once the lubricant is placed on the gear, the diluents evaporate, leaving the dense lubricate intact. If a gear is kept clean, aligned and lubricated properly, it should last 20 years or more, as explained in AGMA Standard 9005 E02. The selection of the proper lubrication is a function of operating temperature, ambient temperature, pitch line velocity and type of application.
6 Learn Critical Terms
Three critical terms to master are radial runout, backlash and root clearance. The axial runout occurs when the gear wobbles back and forth because the gear side face is not perpendicular to the axis of rotation of the shell. This error will reduce the face contact surface between the pinion and gear teeth. Radial runout occurs when the gear is not concentric with the center of rotation of the shell. Radial runout results in a sliding motion between the gear and pinion rather than rolling and, if excessive, can cause the tip of tooth to root interference. Backlash is the error in motion that occurs when a gear changes its direction. It is recommended that a gear is initially set up with the help of a feeler gauge to make sure the backlash is the same on both sides. The use of a “Prussian Blue” or
Usually, in high heat, a leaf spring mount is used, where springs allow for expansion and transmit the load.
other means to check the contact pattern is also recommended because, on worn pinions or gears, setting the backlash equally on both sides may not result in a good contact. Root clearance is a critical item and is defined as the distance from the tip of the pinion tooth to the root of the gear tooth when they are in mesh. Most gearsets have the pitch lines scribed on the side face. The pinion pitch diameter must always be outside the gear pitch diameter. Most dryer open gearing is cut with no backlash because the center distance is adjustable. On a new gearset you can set the root clearance by setting the backlash to the correct value. However, on a worn gearset, backlash cannot be used to set the root clearance. Checking the position of the pitch line and an actual measurement of root clearance at several points around the gear is necessary in order to take into account radial runout.
Another consideration is gear thermal expansion. Heat will be transferred from the dryer shell to the gear; thus, the gear will expand into the fixed position of the pinion, reducing the root clearance and backlash. Because you are setting the pinion in the cold condition, the root clearance must be increased to accommodate this factor. If you have an operating unit, it is advised that periodic measurements of gear temperatures be taken. Insufficient root clearance can result in extremely costly tooth failure.
Dual 7 Understand Pinion Drives
In high production applications, dual pinion drives are used to nearly double the horsepower rating of the gearset for the same face width. The downside to employing two electric motors is that it is difficult to have matching speed load curves. This will result in two motors fighting each other. Even variable-speed drives (VFDs) www.process-heating.com • S e p t e m b e r 2 0 1 1
|
21
Dryers Understanding the alignment of a dryer is key to minimizing maintenance and downtime.
pose problems when running together long term. The use of two hydraulic drives is recommended, as hydraulic motors set at the same operating pressure will result in equal loads to each pinion.
8 Think About Gear Mounts
Achieving successful gear mounts depends on the temperature of the dryer. Usually, in high heat, a leaf spring mount is used, where springs allow for expansion and transmit the load. With this type of mounting, gears do not get as hot as the other surfaces and are stressed less due to differential thermal expansion. Flange mounts are not recommended. Lug mounts with slotted holes are applicable for low temperature applications. Leaf spring mounts can be used on any application.
9 Remember Gear Inspections
3++XEEHOOLQGG
Regular shutdown and inspection of the gear sets should be a priority. It is also suggested that the gear be tested prior to installation. While the unit is not running or the gear is just being installed, ultrasonic testing, mag-particle inspection, eddy current testing and various other ways to detect possible cracks can be employed. What many don’t expect is a crack in the root of the gear tooth that can create sudden catastrophic failure. Shutting down production after a serious gear break and waiting for the replacement is a time-consuming and costprohibitive process.
1 0 Perform Thermal Imaging
Because you can’t fully inspect a dryer while the unit is in production, a heat gun should be used to measure the temperature and look for refractory failures. If hot spots are found and corrective action is not taken, it is likely that a shell replacement and unit alignment will be needed. A relatively uniform temperature is the desired result. This should be performed at least once a week and logged. Recording bearing temperatures, tire temperature and the shell temperature near the tire, temperature across the pinion face and tire creep should be done weekly. Plants with a strong training record show better results on their units. PH
Roland Sutter is a chief engineer with Industrial Kiln and Dryer Group, Louisville, Ky. For more information, call (877) 316-6140 or visit www.industrialkiln.com. 22
|
S e p t e m b e r 2 0 1 1 • Process Heating
Heat Transfer
Achieving
Furnace Lining Efficiency Prevent downtime and keep facilities running smoothly with proper care and maintenance. By Steve Chernack, Morgan Thermal Ceramics
A
n efficient furnace lining is key to reducing overall maintenance costs and ensuring that facilities run smoothly without undue revenue loss due to downtime. Follow the five tips below to keep your furnace lining running efficiently.
1
Evaluate Using Infrared Thermography inspection
Infrared thermography scans are an essential step for evaluating the quality of the furnace or high temperature heating vessel lining. Lining quality is critical to protecting the equipment structure from heat and also to limiting heat loss and promoting overall furnace efficiency. Typically, the scan involves pointing an infrared camera at several points on the casing to analyze the outside temperature and identify hot spots where the unit is leaking heat or experiencing design issues that may not be visible from the outside. This is a particular issue with a painted surface. Obviously, scanning from the outside is of great benefit because the unit can continue to operate. Figure 1 shows an infrared camera detecting hot spots or other
problems with the lining. In many cases, specially trained applications engineers conduct the infrared imaging, analyze the scans and provide recommendations on the most appropriate repair options.
Online 2 Use Maintenance Repair
Depending upon the temperature, the difficulty of getting to a particular area or how big the hot spot is, conduct online repairs wherever possible. Most maintenance managers prefer the online repair option because it is reliable and fast. After all, boilers and process units are generating revenue, so it is of great value if repairs can be made while the unit is online. This avoids revenue loss from the unit in question as well as the consequential losses from shutting down additional connected units.
the Right Material 3 Choose for Furnace Rebuilds When infrared scans indicate that the area of concern is too large for online repairs, the unit must be shut down for a furnace reline or process heater reline. Material selection is key to a successful furnace rebuild that will improve efficiency and reliability and lower maintenance costs. Material properties, including hardness, density, mechanical resistance or insulating factor, may vary depending upon the furnace’s application. Selection of the proper material frequently is done by using a heat flow analysis software program in which temperature and use factors are input to obtain information on the best materials to be used. Keep in mind that many units have old style insulation. Because there are many more efficient insulation types now available, consider upgrading when you have to reline the furnace. For example, some fibers have up to 20 percent lower thermal conductivity than current insulations, which are up to 17 percent more energy efficient than traditional refractory ceramic fiber (RCF) and any other alkaline earth silicate (AES) insulations. Figure 2 shows materials used in furnace rebuilds.
Consider 4 Carefully Engineering Design
After selecting the proper materials, be sure that the engineering design is suit-
Figure 1. An infrared camera is used to detect hot spots or other problems with the lining.
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
23
Heat Transfer
Figure 2. Material selection is key to a successful furnace rebuild that will improve efficiency and reliability and lower maintenance costs.
able. Engineering is extremely important to ensuring that the furnace relining will last as long as possible. Make sure the materials have enough studs to hold them in place and have sufficient joints for expansion or shrinkage. For instance, if you install a brick lining without the proper expansion joints, the brick could actually grow and end up pushing the entire lining off the furnace wall.
24
|
S e p t e m b e r 2 0 1 1 • Process Heating
Installation Is Key to Success 5 Proper
Be sure that installation of furnace lining material is done properly and those doing the job have the proper skills for the task. There are many products available and each has different installation requirements. For example, with concrete products, if the concrete is not mixed with the right amount of water at the
proper temperature, the material will not develop, will be difficult to place and will not reach expected properties. The bottom line is that if you do not install it right, it is as bad as not having a good design and not making a good material choice. PH
Steve Chernack is manager of applications engineering with Morgan Thermal Ceramics, Augusta, Ga. For more information, call (706) 796-4200 or visit www.morganthermalceramics.com.
Heat Tracing
• Potential for leaking process materials into the heating medium. • Time-consuming and costly to modify. • High energy consumption.
Heat tracing systems can provide effective and efficient fluid heating. By Thomas W. Perry, QMax Industries Inc.
Traditionally, fully jacketed pipe and tube tracing (or pipe tracing) were the only widely accepted systems using fluids as the heating medium. As an alternative, a fluid tracing system for process piping offers advantages over traditional fluid heating methods. Its design addresses factors considered when selecting the heating system for piping.
Traditional Fluid Heating
I
ncreasing and maintaining temperatures in process piping is important to the operation of many industrial facilities. Selecting a heating system is not usually a quick and easy decision because there are short- and long-term cost and operability implications. Important factors when making this decision include: • Effectiveness. Will the system perform as intended? • Capital cost. • Maintenance cost. • Energy efficiency.
When designed properly, fully jacketed pipe — jacketing the core pipe with a second, outer pipe and conveying heating medium in the annular space — is the most effective system for maintaining process temperatures in piping. Jacketed pipe offers the greatest heating surface area around the process pipe and offers direct heating contact between the process and heating medium. However, jacketed pipe also has some disadvantages: • Relatively high capital cost. • Potential for leaking heating medium into the process materials.
Tube tracing — running a stainless or copper tube along the pipe, which conveys a heating medium — is typically a non-engineered system with relatively low capital cost. Unfortunately, this system is sometimes ineffective for maintaining elevated process temperatures due to poor heat transfer from the heating medium to the process. Theoretically, there is a line contact between the tubing and pipe wall that facilitates a conductive heating path. All too often, this line contact is never attained during installation. The uneven contact between the pipe and tubing can result in convective heating rather than conductive heating, which leads to unpredictable performance. The convective heating is inefficient because it heats the air surrounding the tubing and the air then attempts to heat the process pipe.
Fluid Tracing System One fluid tracing system that has been introduced can maximize heating and energy efficiency (figure 1). It is constructed with a conductive aluminum channel that fits over stainless or copper tubing. The high conductivity maximizes heat transfer from the tubing — conveying the heating medium — to the process pipe. It is intended to combine the flexibility and cost advantages of a tube tracwww.process-heating.com • S e p t e m b e r 2 0 1 1
|
25
Heat Tracing Comparing Methods
HTC Tube Tracing
Fluid
Process
Heat Input into Process (BTU/hr/ft)
600 Fluid Tracing System
500
Tube Tracing 400 Jacketed Pipe 300
Note • Pipe is 6" Schedule 40 Carbon Steel • Insulation is 2" of FG/Aluminum Clad • Hot Oil is 400°F • Ambient Temperature is 20°F (-6°C) with 30 mph Winds
200 100 0 -100
ing system with the predictable results of jacketed pipe. Such a fluid tracing system converts standard stainless or copper tubing from inefficient convective heat transfer to conductive heat transfer using highly conductive aluminum as its main heating body. The heating surface area also is increased to as much as 3" per strip. The two enhancements increase two of the three parameters in overall heat transfer from the process to the heating medium.
50˚F
100˚F
150˚F
200˚F
250˚F
300˚F
Figure 2. The diagram compares the fluid tracing system, jacketed pipe and tube tracing methods.
Energy Transferred to Process 600 Heat Input into Process (BTU/hr/ft)
Figure 1. The fluid tracing system for process piping heats the process effectively until it reaches the operation temperature.
500
Fluid Tracing System
400
Jacketed Pipe
300
Note • Pipe is 6" Schedule 40 Carbon Steel • Insulation is 2" of FG/Aluminum Clad • Hot Oil is 400°F • Ambient Temperature is 20°F (-6°C) with 30 mph Winds
200 100
Q = U • A • 6T 0
where Q is heat transfer, from heating medium to process, needed to overcome natural heat loss and/or to heat a process to a specified temperature. U is combined heat transfer coefficient from heating medium to process. A is the contact area between the heating medium and process. 6T is the temperature difference between heating medium and process.
System Comparison From an operability standpoint, the main selection considerations are the ability to heat the process from an upset condition to its desired operating temperature, and the system’s ability to maintain that temperature during normal operation. Consider raising the temperature of asphalt from 50 to 300°F (10 to 148°C) in 26
|
S e p t e m b e r 2 0 1 1 • Process Heating
50˚F
100˚F
150˚F
200˚F
250˚F
300˚F
Figure 3. The figure compares the energy transferred to a process via the fluid tracing system and jacketed pipe.
an insulated 6" carbon steel pipe. Figure 2 reflects the effectiveness, or energy transfer (BTU/hr/ft), from the heating medium (in this case, 150 psig saturated steam at 365°F [185°C]) into the asphalt from the system, via jacketed pipe and a stainless steel convection tracer. This comparison also is an indicator of each system’s ability to maintain the desired operating temperature of 300°F (148°C) during normal operation. Fully Jacketed Pipe. In jacketed pipe, the “UA” is maximized and more energy is transferred from the steam into the process than any other system. After the operating temperature of 300°F is reached, the
jacketed pipe system continues to heat the process. This may be a disadvantage if a process has an upper temperature limit that cannot be exceeded. Due to the maximum energy transferred, the cost of the heating medium should be analyzed because it may be substantial. Tube Tracing. In this example, the tube tracing is not effective at transferring energy into the process. The heat energy from the steam must transfer through stagnant air before entering the pipe and asphalt. Stagnant air is a great insulator (its “U” is very low), which prevents effective heat transfer. In fact, at 150°F
Heat Tracing (65°C), the tube tracing has reached equilibrium and has no more available energy to heat the process. This inability to transfer the energy into the process makes the system appear to be energy efficient. As reflected in figure 2, it uses less energy than any other system at every temperature. Once the maximum temperature of the process is met, all extra energy is lost through the insulation.
The system consists of a conductive aluminum channel that fits over stainless or copper tubing. Fluid Tracing System. The fluid tracing system heats the process effectively until it reaches the operation temperature of 300°F. The system is designed using software that models the heat transfer and allows the system to precisely control the amount of energy needed to meet the specific goal. In other words, the “UA” is specifically designed into the system. The fluid tracing is effective at increasing process temperatures as needed, yet is also energy-efficient. It does not continue to add unnecessary heat energy into the process once operating temperatures are met. Normally, the fluid tracing system is
designed to reach equilibrium at a temperature slightly higher than the target temperature unless designing specifically for heat-up or melt-out. The system can be designed to approach the performance of fully jacketed pipe if heat-up or melt-out is the primary goal (figure 3). As the pressure to increase plant efficien-
cies and minimize downtime become more important, the need to consider innovative solutions is critical. PH Thomas W. Perry is president of QMax Industries Inc., Charlotte, N.C. For more information, call (704) 643-7299 or visit www.qmaxindustries.com.
Capture the Power: Buhler Aeroglide. Custom designed driers, ovens, roasters, toasters and coolers.
Buhler Aeroglide 100 Aeroglide Drive, Cary NC 27511 USA Tel +1 919 851 2000, Fax +1 919 851 6029
[email protected], www.aeroglide.com/process
Process expertise in a wide variety of industries Unmatched efficiency, product quality and production control Global support and training with 24 hour technical assistance www.aeroglide.com/process
WEB EXCLUSIVE Top 5 Reasons to Consider a Fluid Tracing System Each system is analyzed using software to predict and prevent failure. Each application is specifically designed for specific heating requirements to offer precise temperature control and precise energy consumption.
Fluid Tracing Applications Process temperature maintenance is required in a variety of industries.
The solution behind the solution.
READ MORE @ WWW.PROCESS-HEATING.COM
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
27
Equipment Overview
Infrared Heaters
Infrared heaters are used to transfer heat through a process or to a product via radiation. Our Equipment Overview on Infrared Heaters, an apples-to-apples comparison of the capabilities of a range of radiant heater
makers, will help you narrow the field of potential suppliers to those that can satisfy your process needs. Find the type of heater you want and run down the column to see which manufacturers supply it.
You also can conduct your search online at www.process-heating.com. The online version lets you select multiple headings across all of the categories and narrows the results after each selection automatically. In addition, WAVELENGTH
HEATER TYPE
You also can conduct your supplier search online!
GAS FIRED
MANUFACTURING PROCESS
ELECTRICALLY POWERED
Click on Equipment Overview, then on infrared heaters.
Companies Aitken Products Inc. www.aitkenproducts.com
Catalytic Ceramic Fiberboard Ceramic Element Ceramic Tile Porous Metal Fiber Matrix Porous Ceramic Fiber Matrix Ceramic Element Ceramic Generator Coiled Metal Sheath Halogen Lamp Metal Ribbon Panel Type Quartz Tube Radiant Tube Radiant Wall Sinuated Wire Long Wave Medium Wave Short Wave Annealing Baking Bonding Cooking Curing Dehydrating Drying Embossing Evaporating
www.process-heating.com
•
•
••
• •• •• • • • • • • •• •• • • • ••• •• •• • • • • •• ••• •• •• ••• •• • •• • •• • • ••• • • • • • • • •• •• •• • •• ••• •
Despatch Industries www.depatch.com
Higuchi Inc. USA www.higuchiusa.com
Omega Engineering Inc. www.omega.com
Soneko USA www.soneko.com Abutec LLC
•
•
Anderson Thermal Devices
• •
BBC (Black Body) Industries Inc.
•
• •
• •
C.A. Litzler Co. Inc.
•
CCI Thermal Technologies
•
Casso-Solar Technologies LLC
•
•
• •
•
•
Convectronics Inc. •
• •
DeVries Drying Systems Inc.
•
•
•
• •
•
Eraser Co. Inc.
•
• •
•
•
• •
• •
• • •
•
• •
•
•
• •
•
• •
• • •
•
• •
• •
• • •
•
• • •
•
•
•
• • •
• •
• • •
•
• •
•
• • •
• •
•
•
•
•
• •
Chromalox
•
•
• •
•
• •
Fostoria Process Equipment Div.
• •
•
•
General Thermal Corp.
•
•
•
•
•
• •
• • •
• •
• • •
• • •
•
• •
•
• •
• • •
• •
• • •
• •
•
•
•
•
•
•
• • •
• •
•
• •
• • •
• •
• •
• •
•
• •
• • •
• •
•
•
•
•
•
•
•
•
• •
•
•
• •
• • •
•
• •
• • •
•
•
• •
• • •
•
• •
•
• • •
• •
• • •
•
• • •
• •
• •
•
• •
•
•
•
•
Glenro Inc.
• •
•
•
•
• •
• •
•
• •
•
Hix Corp. Indesco
•
Innovative Industries Infrared Intl./Mor Electric Heating Infrared Solutions & Technologies
• •
Intek Corp.
•
Process Technology
•
•
Etter Engineering
Osram Sylvania, Process Heating Div.
• •
•
•
•
Blasdel Enterprises
Herr Industrial Inc.
•
•
BGK Finishing Systems
David Weisman LLC
• • •
•
•
• • •
• •
•
• •
• • •
•
•
• •
• • •
•
•
• •
•
•
•
• •
• •
• •
•
•
•
•
•
•
•
•
•
• •
• •
• • •
• •
•
• •
• • •
• •
• • •
• •
•
• •
• • •
• •
• • •
•
•
• •
• • •
•
• •
• •
•
• •
• • •
• •
Manufacturers listed in this Equipment Overview responded to a special mailing by Process Heating and do not necessarily represent the entire infrared heater market. For contact information or to be included in future listings, contact Linda Becker at (847) 405-4020; fax (248) 502-1001; e-mail
[email protected]. Companies with in front of their names have an advertisement in this issue.
28
|
S e p t e m b e r 2 0 1 1 • Process Heating
hyperlinks will take you directly to manufacturers’ web sites. To contact a specific manufacturer, click on the company name in the search results and use the contact information shown in the lower right corner of the online Equipment Overview.
Extruding Fusing Heat Setting Heat Shrinking Laminating Pre-Drying Pre-Heating Soldering Sterilizing Tempering Thermoforming Other Chemicals/Petrochemicals Electronics Ethanol/Biodiesel Finishing Food Packaging/Printing Paper/Pulp/Converting Pharmaceuticals Plastics/Rubber
INDUSTRIES SERVED
Does your company manufacture/market aftermarket supplies/services for your infrared heaters?
MANUFACTURING PROCESS
Duratherm Burner
• •• •• • • Yes • • •• • • ••• • • • • •• •• •• • • Yes •• • •• •• • • •• • • ••• • • • • •• • • •• • • •• • • •• • • •• • • Yes • •• • • • • •• • • •• • • •• • • •• •• * •• • •• •• • • •• •• • •• • • • • •• • • •• • • •• • • Yes • •
• •
•
• •
•
•
• •
• •
• • •
•
• •
•
• •
• •
• •
•
• •
• •
• •
•
• •
•
•
•
•
•
Yes
• •
•
•
•
•
•
• •
Yes
• •
•
•
• •
• •
• •
*
•
•
•
• •
CSB Burner
Uniform heating and low NOx. ALZETA’s “flameless” radiant surface is ideal for avoiding fragile fluid breakdown and localized hot spots.
Ultra-low NOx emissions for watertube and firetube boilers up to 150 MMBtu/hr. Simple controls; no FGR required. • Burner systems for new and retrofit applications • OEM and custom designed burner elements • Applications and custom engineering • Contact ALZETA with any specific needs
Firestar Modules in Boiler ALZETA’s newest premixed, surface stabilized burner. Low NOx and modular design for small boilers and heaters up to 10 million Btu/hr.
ALZETA Corporation | 2343 Calle del Mundo | Santa Clara, CA 95054 408.727.8282 | 408.727.9740 fax | www.alzeta.com
Yes Yes
•
• •
•
•
* PH08114Alzeta.indd 1
Yes
•
• •
•
• •
•
•
•
•
• •
• •
• •
Yes
• •
• •
•
• •
•
•
•
• •
• •
• •
• •
Yes
• •
• •
•
• •
• • •
•
•
• •
• •
• •
• •
Yes
• •
• •
•
• •
•
•
•
•
•
• •
• •
Yes
• •
•
• •
•
•
•
• •
• •
•
Yes
•
• •
• •
*
•
•
• •
• •
•
• •
• • •
•
• •
• •
•
•
• •
•
• •
• •
•
• •
• •
• •
• •
• •
• •
Yes
• •
• • •
•
• •
•
•
•
•
•
• •
• •
• •
• •
Yes
•
• •
• •
• •
Yes
•
•
•
•
• •
• •
• •
Yes
• •
•
7/20/11 9:58 AM
For more information call:704-643-7299
QMax ETS Maximizes the Performance of constant power and self-regulating electric tracing systems. Without QMax, much of the length of these systems is heating the airspace around the pipe and relying on ineffective convection heat transfer to heat the pipe and process. This causes localized hot and cold spots along the pipe. QMax ETS creates a conductive path between the electric tracing and the pipe and increases the heating surface area to as much as 3 inches per strip. The energy from the electric tracing is efficiently and effectively transferred into the pipe and process. QMax also extends the life of electric tracing systems.
Ets ELECTRIC TRACING SYSTEM
*
• •
•
•
• •
• •
Yes
• •
•
• •
•
•
•
•
•
• •
• •
• •
Yes
• •
• •
•
• •
• • •
•
• •
• •
• •
• •
• •
Yes
• •
• •
•
• •
• • •
•
• •
• •
• •
• •
• •
Yes
• •
•
•
• •
•
• •
• •
• •
Yes
The QMax ETS Offers Guaranteed Results whether the goal is:
• •
• • •
•
• •
• •
• •
• •
• •
Yes
3URFHVV7HPSHUDWXUH0DLQWHQDQFH
•
• •
• •
• •
• •
*
• •
• •
•
PROCESS
Q
max
TM
ELECTRIC TRACING SYSTEM
Please fill out our QMax ETS Evaluation Questionnaire and send it to your representative for individual attention. We treat every application uniquely to offer the right solution for you.
• •
• •
ELECTRIC TRACING
QMax Industries, Inc. models the thermal characteristics of each application so the results of the QMax ETS system are guaranteed. The profile of QMax ETS is customized to each individual pipe size and individual tracer size to ensure the best results for each application.
*
• •
HTC
Notes:
0LQLPXP3LSH:DOO7HPSHUDWXUH Maintenance /LJKWGXW\3URFHVV+HDW8S &ULWLFDO3URFHVV)UHH]H3URWHFWLRQ
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
29
Equipment Overview
Infrared Heaters WAVELENGTH
HEATER TYPE
You also can conduct your supplier search online!
GAS FIRED
MANUFACTURING PROCESS
ELECTRICALLY POWERED
Catalytic Ceramic Fiberboard Ceramic Element Ceramic Tile Porous Metal Fiber Matrix Porous Ceramic Fiber Matrix Ceramic Element Ceramic Generator Coiled Metal Sheath Halogen Lamp Metal Ribbon Panel Type Quartz Tube Radiant Tube Radiant Wall Sinuated Wire Long Wave Medium Wave Short Wave Annealing Baking Bonding Cooking Curing Dehydrating Drying Embossing Evaporating
www.process-heating.com Click on Equipment Overview, then on infrared heaters.
Companies Process Thermal Dynamics
•
•
•
• •
•
Quartz Infrared Inc.
• • • •
Radiant Energy Systems Inc.
•
Red-Ray Mfg. Co. Inc.
•
•
•
Solar Products Inc.
•
Trent Inc.
• •
Trimac Industrial Systems LLC
•
Vulcan Catalytic
•
•
-
-
It’s Time for You to...
•
•
•
•
• •
•
•
•
•
•
•
• • •
•
• •
•
•
•
•
• •
•
•
•
•
• •
• •
•
•
• •
•
•
•
• •
•
• •
• • •
•
• •
• •
•
•
• •
• • •
• •
•
•
• • •
• •
• • •
• •
•
•
•
Watlow Wisconsin Infrared
•
• • •
• •
•
• •
Tempco Electric Heater Corp.
•
•
• •
• •
Thermal Engineering Corp.
•
•
• •
Research Inc., Precision Control Systems Inc.
• •
•
• •
• •
•
•
• •
•
•
• •
• • •
• • •
•
• •
• •
•
• •
•
•
• • •
•
• • •
• •
•
•
• • •
• •
-
Save Money Improve Efficiency Reduce Operating Costs Lower Utility Bills
-
It’s Time for Your New...
-
Thermal Fluid Heater Steam Boiler Medium Temp Process Heaters Heating Medium: Thermal Fluids Temp Range: 350° - 650°F BTUs: 126,000 - 6,250,000
------
Available with: Expansion Tanks with Level Controls Distribution/Air Separation Tanks Air-Cooled 650° Pumps Custom Skid Mounts
Steam Boilers: NEVER A COMPROMISE FOR QUALITY OR SAFETY
Parker Boiler Co. 5930 Bandini Blvd. Los Angeles, CA 90040 (323) 727-9800 Fax: (323) 722-2848
[email protected] www.parkerboiler.com 30
|
S e p t e m b e r 2 0 1 1 • Process Heating
15 to 250 PSI HP: 1.5 to 150 HP
Available with: Feed Systems or DA Tanks Blow Off Tanks Softeners Chemical Feed Systems Custom Skid Mounts
Medium Temp Process Heaters Temp Range: 130° - 400°F BTUs: 300,000 - 6,800,000 Hot Water or Glycol
---
All Units Available with: Expansion Tanks with Level Controls Distribution/Air Separation Tanks Air-Cooled 400° Pumps Custom Skid Mounts Natural Gas, #2 Oil, Propane, Combination Fired, Low NOx, or Bio Fuel Firing
All Parker Boilers Use a Flexible Staggered Tube Design with 8 to 10 Pass Flow with a 25-Year Guarantee Against Thermal Shock.
Extruding Fusing Heat Setting Heat Shrinking Laminating Pre-Drying Pre-Heating Soldering Sterilizing Tempering Thermoforming Other Chemicals/Petrochemicals Electronics Ethanol/Biodiesel Finishing Food Packaging/Printing Paper/Pulp/Converting Pharmaceuticals Plastics/Rubber
INDUSTRIES SERVED
• •
• •
•
• •
• •
•
•
• •
•
• •
•
• •
•
•
•
•
• •
•
• •
•
• •
•
• •
• •
• •
•
• •
• • •
• •
• •
•
• •
• • •
• •
•
• •
•
• •
•
• •
•
• •
•
• •
• •
• •
•
• •
•
•
• •
•
•
•
•
• •
• •
*
• •
• •
•
• •
• • •
•
•
•
• •
• •
• •
Yes
• • • • •
•
• •
•
•
• •
•
•
• •
• •
Yes
•
• •
Yes
•
• •
• •
Yes
• •
• •
• •
Yes
•
•
• •
Yes
•
• •
•
•
Does your company manufacture/market aftermarket supplies/services for your infrared heaters?
MANUFACTURING PROCESS
•
•
•
•
•
•
•
•
• •
• •
• •
Yes
•
•
• •
• •
•
Yes
•
•
• •
• •
• •
• •
*
•
•
•
•
• •
• •
Yes
• •
• •
Yes
• •
• •
Yes
GET CONNECTED www.process-heating.com/connect
Stay connected to the best source of useful on-the-job information in heat processing.
Your source for the highest quality Single & Multiple Channel Chillers on the market today.
Design
Custom Design available 6 standard chiller models to choose from Design your chiller one on one with our engineers From 2,500 to 380,000 BTU/hr Re-circulating Heat Only Systems available Various sizes available for your application and space requirements
Quality
Over 25 years of high quality manufacture and design Only the highest quality refrigeration and components used All motors thermally protected and tested All units are manufactured in our US facility Each unit goes through an in depth in-process and ¿nal quality inspection
401 Magnolia Avenue Croydon, Pa 19021 | (Phone) 215-788-5528 | (Fax) 215-788-7737 You can visit us on the web: www.tek-tempinstruments.com or email
[email protected] www.process-heating.com • S e p t e m b e r 2 0 1 1
|
31
Product Highlights Wondering where to find products beneficial to your process? This department provides a number of new products each month and allows you to easily request more information. Simply call those companies in which you are interested, or visit those companies’ web sites using the published web addresses.
Product P d c Take Take-Off Off No Overheating Worries with Adjustable-Heat Hot Air Blowers Heating d directly l ffrom the machine, the Prem new Hotwind Premium and Hotwind Sy System hot air blowe let you manually ers a adjust maximum air v volume up to 237.8 g gal/min via the potentiomet om eter er or o control system. Both ometer units can reach maximum air-outlet temp te mper erat atur ures es o temperatures of 1,492°F (81°C). Hotwind Premium functions either as ins nsta talllled ed device dev evic ice e or a hand han and d tool. Features include: an installed • • • • • •
Adjustable heat output and air volume. Integrated power electronics. Protection against overheating. Maintenance-free, brushless blower motor. Peak performance, even when run 24/7. System interface for integration in closed-control systems.
Ovens for Composite Curing The S-Series is typically used for aging, curing, bonding, annealing, drying, baking and heat treating. Features include vacuum ports, lift doors and tight temperatures. Ovens provide “uniflow” airflow that delivers heated air from both sides of the chamber for uniform operating temperatures. This air moves horizontally and vertically through the work chamber to be reheated and recirculated through the system. For parts and molds with unusual heat transfer requirements, the company can work with the user to design an airflow that is best suited to provide fast, uniform heatup time. Despatch • (952) 469-5424 • www.despatch.com
Double Conveyor Oven Class A double conveyor oven is built and outfitted to accommodate a number of customer-specific requirements. The uniquely modified conveyor model shown has a gas-fired topmount heat chamber. Features include two powered side-byside chain-driven roller conveyors with reversible drives along 32
|
S e p t e m b e r 2 0 1 1 • Process Heating
The Hotwind System — a more robust version of Hotwind Premium — is for either open or closed systems. In addition to the Hotwind Premium features, this product includes:
See p. 5 on how to use the Mobi Tag.
• Alarm interface to control air volume and heat output using 4 to 20 mA or 0 to 10 V. • Remote control interface for temperature or power setpoint. • Remote control interface for air volume adjustment. • Integrated temperature probe and control. • Digital temperature readout showing the setpoint and actual values (°C or °F). Both air blowers are ideal for hot air applications such as shrinking, drying, sterilization and more.
Leister Process Technologies www.leisterusa.com
with pneumatically operated vertical lift doors on both ends. The unit was designed to accommodate the processing of up to 4,000 lb of product at a time. Each component weighs 325 lbs and, as part of the process, is loaded alongside five other commutators per batch onto customer-provided 19 x 19" perforated plates, where the ensuing preheat process takes place for 4.5 hours at 392°F (200°C). Precision Quincy Corp. (815) 338-2675 • www.precisionquincy.com
Batch and Conveyor Ovens The company offers dryers, ovens and furnaces for a range of applications. Heating equipment is designed in both batch and continuous designs, including overhead trolley, chainon-edge and belt conveyors. Standard temperature ratings include 500, 650, 800, 1,000, 1,250 and 1,400°F (260, 343, 427, 538, 677 and 760°C). They can be heated by gas (direct or indirect fired), electric and steam. Wisconsin Oven Corp. • (262) 642-3938 • www.wisoven.com
The 2011 NAI Coating Show gives you what no other coating event can. t 5FDIOJDBMQSFTFOUBUJPOTCZLFZSFQSFTFOUBUJWFTGSPNUIF MJRVJEBOEQPXEFSDPBUJOHJOEVTUSZ t 4FTTJPOUPQJDTPOUIFQSFWFOUJPOBOESFEVDUJPOPG DPBUJOHGBJMVSFT DPBUJOHBQQMJDBUJPONFUIPET DPSSPTJPO VOEFSJOTVMBUJPO BOEQJQFMJOFmFMEDPBUJOHT t "VEJFODFPG FOHJOFFST BTTFUNBOBHFST DPBUJOH DPOUSBDUPSTBOEBQQMJDBUPST RVBMJUZDPOUSPMNBOBHFST BOE UFDIOJDBMEJSFDUPST t $PBUJOHT$BSFFS;POF GFBUVSJOHDPNQBOJFTSFDSVJUJOHOFX FNQMPZFFTBTXFMMBTKPCMJTUJOHTQSPKFDUTJOUIFJOEVTUSJBM DPBUJOHTNBSLFU 1SFTFOUFECZ
OCTOBER 46, 2011 Duke Energy Convention Center Cincinnati, Ohio
For more information, visit www.thenaicoatingshow.com. $P4QPOTPST
Product Highlights Tray Dryer Turbo-Dryer is a proprietary continuous tray dryer design that consists of a stack of rotating circular trays in a sealed enclosure. The larger capacity model can be used to heat treat a fine (70 μm) metal oxide powder. This design is capable of operating at temperatures up to 1,200°F (650°C) to calcine or sinter metal powders. The unit includes an internal electrical heating system to provide the heat to remove the residual moisture. A small purge of dry air or nitrogen is used to purge water vapor from the system, keeping fines carryover to a minimum. Wyssmont Co. Inc. • (201) 947-4600 • www.wyssmont.com
Electric Immersion Heaters With the SmartOne technology, thermal overtemperature protectors are not required for safe operation. The PTC heaters will not burn out in air like traditional resistance heaters. They utilize solid-state ceramic heating elements as the heat source. The devices are selflimiting: the maximum temperature is internally limited regardless of the operating conditions. If the temperature goes down, so does the resistance (thereby increasing power output). Process Technology (440) 974-1300 • www.process-technology.com
Electric Tracing System Model ETS maximizes the performance of constant power and self-regulating electric tracing systems. It creates a conductive path between the electric tracing and the pipe, increasing the heating surface area to as much as 3" per strip. The energy from the electric tracing is efficiently and effectively transferred into the pipe and process. QMax Industries (704) 643-7299 • www.qmaxindustries.com
Cabinet Oven No. 900 is a gas-heated 350°F (177°C) floor level cabinet oven used for drying polycarbonate plastics. A modulating natural gas burner provides 100,000 BTU/hr and workspace dimensions are 36 x 36 x 60". The oven has 4" insulated walls and a 750 cfm, 0.75-hp recirculating blower provides vertical airflow to the oven. Safety equipment such as a 325 cfm, 1/3-hp 34
|
S e p t e m b e r 2 0 1 1 • Process Heating
powered force exhauster is included as required by IRI, FM and the National Fire Protection Association Standard 86 for gas-heated equipment. The oven also has shelf supports on 3" vertical centers that are rated 200 lb per level, for a 1,000 lb maximum oven load. Grieve Corp. • (847) 546-8225 • www.grievecorp.com
Integrated Production Control System The field control system (FCS) offers four times the processing performance, twice the application storage capacity, and five times the control network throughput of previous systems from the company. It includes a unified gateway station (UGS) that improves integration with other systems, allowing it to control and monitor all the systems at plants, including PLC systems. In oil and gas fields and other applications where facilities may be scattered over a wide area, the UGS can establish a link with the small-scale systems (such as utilities) at each site. Yokogawa • (800) 888-6400 • www.yokogawa.us
2-, 3-Pole Hybrid Relays Series RMD combines elements of solid-state technology and electromechanical relays to provide a hybrid relay. The design ensures virtually no contact arcing, which results in prolonged relay life and less emission inside of the panel. Features include a full amperage rating at elevated operational temperatures. Fully rated up to 140°F (60°C), the mercury-free switching solution is suited for controlling the heating element inside food ovens, fryers and other food equipment. Carlo Gavazzi Inc. • (847) 465-6100 • www.carlogavazzi.com
Condensing Boiler Long offered as an ultra-high efficiency condensing hydronic boiler, Vantage boiler now can use B100 biodiesel and ultra-low sulfur (under 15 ppm) heating oils for full condensing operation. It has been available for a number of years for dual fuel operation: natural gas and No. 2 heating oil during gas supply interruptions. However, previous system controls intentionally prohibited the boiler from operating in condensing mode during oil-fired operation. Fulton • (315) 298-7182 • www.fulton.com
Need Thermal Fluid Heaters... To find them, turn here
www.process-heating.com/buyersguide Locate the industrial equipment, components and services specifically used in applying, transferring, measuring, monitoring and controlling heat in the manufacturing operations that you need! • Search by Company Name or Product Category • Downloadable Product Spec Sheets • Alpha Company Listings • Live Web & Email Links • Product Photos
2011 Buyers Guide Start your search today! • Watch for expanded - listings!
www.process-heating.com/buyersguide
PH Classifieds
Display Classified Rates: 1X $100 • 3X $95 • 6X $90 • 9X $85 • 12X $80
Equipment for Sale
Send advertising copy to: Process Heating/Attn. Becky McClelland Phone: (412) 306-4355 • Fax: (248) 502-1076 E-mail:
[email protected] E XOT H E R M I C S Indirect Air Heaters and Heat Exchangers Get tremendous energy savings with high quality, reliable indirect air heaters and heat exchangers from Exothermics. If you use heat to process, dry, cure, bake or finish your products, we can help you save money.
CAN-ENG FURNACES INTERNATIONAL LTD. z
z
Rebuilds z Retrofits z Combustion Controls z
Control Panels z Thermal Profiling z Ovens z Burners z Elements z
t: 905-356-1327
f: 905-356-1817
e:
[email protected] www.can-eng.com
Contact: JOE SALIBA (ext:2058) z KIM IAMARINO (ext:2037) z ANNA ROLFE (ext:2056)
HEAT EXCHANGERS ▼
5040 Enterprise Boulevard Toledo, Ohio 43612 Tel: 419-729-9726 www.exothermics.com
Liquid Cooled
Boilers. Nationwide. FOR
:SO`\[]`SOP]cb ]c`b]bOZa]ZcbW]\a( & %'$$ eee\ObW]\eWRSP]WZS`Q][
▼
Air Cooled
GASES & LIQUIDS!
Talk Directly with Design Engineers! Blower Cooling
Vent Condensing
(952) 933-2559
[email protected] Integrity. Dependability. Real Customer Service. Rentals | Sales | Leasing
YOUR AD HERE:
PROCESS HEAT
For $30 we will post & link your print ad on www.process-heating.com
The Next Generation
LHS Air Heater
Upgrade your LE to a Next Generation LHS air heater today www.leisterusa.com Toll-free: (855) Leister
[email protected] Contact Becky McClelland to reserve your classified advertising space for 2011! Phone: 412-306-4355 Fax: 248-502-1076 Email:
[email protected] 36 | S e p t e m b e r 2 0 1 1 • Process Heating
Need Thermal Fluid Heaters...
PH03084DuraliteClass.indd 1
Built-in thermocouple with digital temperature readout
2/19/08 2:47:23 PM
To find them, turn here: www.process-heating.com/buyersguide Locate the industrial equipment, components and services specifically used in applying, transferring, measuring, monitoring and controlling heat in the manufacturing operations that you need! • Search by Company Name or Product Category • Downloadable Product Spec Sheets • Alpha Company Listings • Live Web & Email Links • Product Photos
2011 Buyers Guide Start your search today! Watch for expanded - listings! www.process-heating.com/buyersguide
FREE Subscription Form Please Answer All Questions to Qualify DO YOU WISH TO RECEIVE A FREE* SUBSCRIPTION TO PROCESS HEATING MAGAZINE? F YES!!! F No Would you like to receive the Process Heating e-Newsletter for FREE? F YES!!! F No Would you like to receive the Process Cooling e-Newsletter for FREE? F YES!!! F No Please check your preferred format: F Print Version F Digital Version Signature _____________________________________ Date _________________________ I AM EMPLOYED IN THE FOLLOWING INDUSTRY IN A HEAT PROCESSING OPERATION. (Check one only) 02 F Chemicals/Petrochemicals 13 F Ethanol/Biodiesel Fuels 05 F Pulp/Paper/Engineered 04 F Finishing (paint and other) Wood/Converting 03 F Printing/Packaging 06 F Food Processing 07 F Pharmaceuticals 08 F Electronics 01 F Plastics/Rubber 99 F Other (specify) _________________________________________________________ If none of the above, are you a manufacturer of: 10 F Ovens or other OEM equipment 11 F Process Heating Components 12 F Controls or Instrumentation
To begin your FREE subscription to Process Heating fax this form to (847) 763-9538 or for quicker processing go online www.Process-Heating.com/subscribe
Advertising Index
PH2009 sub form.inddPage 1
WHAT IS YOUR PRIMARY JOB FUNCTION? (Check one only) 34 F Process Engineering 31 F Production Engineering/Mgmt 35 F Design Engineering 32 F Plant Engineering/Mgmt 33 F Lab/R&D/Engineering 39 F Consulting Engineering 37 F Maintenance 30 F Corporate/General Mgmt 36 F Sales/Marketing Engineering Mgmt 38 F Purchasing 98 F Other (specify) DO YOU RECOMMEND, SPECIFY OR BUY THE FOLLOWING EQUIPMENT: (Check all that apply)
*All digital subscribers will receive the print version until digital is available.
DO YOU SPECIFY, DESIGN, RECOMMEND AND/OR PURCHASE HEAT PROCESSING EQUIPMENT OR COMPONENTS? 50 F YES 51 F No
www.process-heating.com/subscribe
99 70 71 72 73 75 76 77 78 92 93 95
F Boilers F Ovens F Burners F Heaters/Heating Elements F Heat Exchangers F Dryers F Thermocouples F Thermometers F Temperature Controllers F Temp. Control Systems F Heat Tracing F Gaskets
79 80 82 84 87 88 27 90 91 94 96 97
F Instrumentation F Heat Transfer Fluids F RTDs F Power Controls F IR Temp. Sensors F Blowers/Fans F Pumps F Chillers F Temperature Profiling F Combustion Controls F Oxidizers F Thermal Fluid Heaters
Or subscribe online at www.subscribeforfree.com *PH is free to qualified individuals in the U.S. and Canada. All other countries, $79.
Name ____________________________________ Title ____________________________ Company __________________________________________________________________ Address ___________________________________________________________________ City/State/Zip _______________________________________________________________ Work Phone ( ) ______________________ Work Fax ( ) ______________________ E-Mail Address______________________________________________________________ By providing your email address and fax number, you're giving us permission to email or fax future notices to you. 0109SUB Sept-1109SUB If you do not wish to receive third-party email offers regarding information relevant to your industry, please check here. F
Company
Phone
Fax
Web
E-Mail
16
Aitken Products Inc.
(440) 466-5711
(440) 466-5716
www.aitkenproducts.com
[email protected] 29
Alzeta Corp.
(408) 727-8283
(408) 727-9740
www.alzeta.com
[email protected] 39
Bloom Engineering Co.
(412) 693-4232
(412) 653-2253
www.bloomeng.com
[email protected] 27
Buhler Aeroglide
(919) 851-2000
(919) 851-6029
www.aeroglide.com
[email protected] 17
Chem Show
(203) 221-9232
(203) 221-9260
www.chemshow.com
[email protected] 24
Dwyer Instruments/Love Controls
(312) 733-7883
(219) 872-9057
www.dwyer-inst.com
[email protected] 10
Epcon Industrial Systems
(936) 273-1774
(936) 273-4600
www.epconlp.com
[email protected] 4
Grieve Corp.
(847) 546-8225
(847) 546-9210
www.grievecorp.com
[email protected] 31
Grieve Corp.
(847) 546-8225
(847) 546-9210
www.grievecorp.com
[email protected] 2
Heatec
(423) 821-5200
(423) 821-7673
www.heatec.com
[email protected] 40
Heatec
(423) 821-5200
(423) 821-7673
www.heatec.com
[email protected] 10
Heresite Protective Coatings
(920) 684-6646
(920) 684-0110
www.heresite.com
[email protected] 11
Higuchi USA
(310) 792-7051
(469) 241-1902
www.higuchiusa.com
[email protected] 22
Hubbell Electric Heater Co.
(203) 378-2659
(203) 378-3593
www.hubbellheaters.com
[email protected] 12
Karl Dungs Inc.
(763) 582-1700
(763) 582-1799
www.dungs.com/usa
[email protected] 14
Micron Fiber-Tech
(386) 668-7895
(386) 668-7462
www.mft-co.com
[email protected] 11
MultiTherm
(610) 408-8361
(610) 408-8365
www.multitherm.com
[email protected] 33
NAI Coating Show
(832) 585-0770
(713) 992-0485
www.theNAICoatingShow.com
[email protected] 3
Omega Engineering Inc.
(203) 359-7815
(203) 968-7192
www.omega.com
[email protected] 13
Paratherm Corp.
(610) 941-4900
(610) 941-9191
www.paratherm.com
[email protected] 30
Parker Boiler Co.
(323) 727-9800
(323) 722-2848
www.parkerboiler.com
[email protected] 6
Payne Controls
(304) 757-7353
(304) 757-7305
www.payneng.com
[email protected] 9
PHG Energy
(615) 481-7067
none
www.phgenergy.com
[email protected] 14
Protection Controls
(847) 674-7676
(847) 674-7009
www.protectioncontrolsinc.com
[email protected] 29
Qmax Industries
(704) 643-7299
(704) 936-7702
www.qmaxindustries.com
[email protected] 12
Soneko IR
(800) 472-8527
(732) 271-3398
www.soneko.com
[email protected] 15
Southern California Gas Co.
(213) 244-5351
(866) 364-9024
www.socalgas.com
none
31
Tek-Temp Instruments Inc.
(215) 788-5528
(215) 788-7737
www.tek-tempinstruments.com
[email protected] 7
TPS-Gruenberg
(570) 538-7200
(570) 538-7380
www.thermalproductsolutions.com
[email protected] 12/18/08 12:05:59 PM
www.process-heating.com • S e p t e m b e r 2 0 1 1
|
37
®
Places & Faces Eclipse Inc., Rockford, Ill., has made the following promotions: Jeff Townsend, vice president, business operations; Jim Corbett, director of European operations, and Rick Steder, director of Americas operations.
Bishop-Wisecarver Corp., Pittsburg, Calif., has received national certification as a Women’s Business Enterprise by the Astra Women’s Business Alliance, a regional certifying partner of the Women’s Business Enterprise National Council. “I am really excited to become certified as a woman-owned business since there are very few of us in our industry, especially within linear motion and power transmission,” says Pamela Kan, Bishop-Wisecarver president. “The selection process includes an indepth review of the business and site inspection by Astra, and [it] is designed to confirm that the business is at least 51 percent owned, operated and controlled by a woman or women.” Colmac Coil Midwest in Paxton, Ill., has earned certification for its coils, meeting the American Society of
Mechanical Engineers (ASME) Section VIII Division 1 code requirements, according to Colmac Coil, headquartered in Colville, Wash.
Ray Pearce has rejoined ECD, Milwaukie, Ore., a manufacturer of thermal profiling equipment and software, as sales engineer. Pearce Pearce will specialize in quality assurance tools and software required to manage and control heating processes applications. When a customer needs to determine which machine from Eraser Co. Inc. will work best for their application, the Eraser Sample Program (ESP) allows them to send in a sample of their material to be tested. Once processed, Syracuse, N.Y.-based company 38
|
S e p t e m b e r 2 0 1 1 • Process Heating
will return the sample to the customer with an evaluation report and quotation for an Eraser solution.
Volcanic Heater Inc., Alliance, Ohio, a manufacturer of marine and landbased thermal heating systems, has launched a new website aimed at providing superior customer service and extensive product information. The site, www.volcanic-heater.com, includes the capability to request a quote online and obtain specialized assistance in the design of all aspects of tank heating. The U.S. Department of Energy has awarded Metabolix, a Cambridge, Mass., bioscience company specializing in the chemicals, plastics and energy industries, a $6 million grant to develop renewable biofuels.
We Energies, a subsidiary of Wisconsin Energy Corp., Milwaukee, has begun construction on a biomassfired cogeneration facility at the Rothschild, Wis., pulp and paper mill owned by Montreal’s Domtar Inc.
PUBLISHING STAFF Senior Group Publisher, Manufacturing Group TOM ESPOSITO • (610) 436-4220 ext. 8530 Publisher • ANNE ARMEL (847) 405-4043 •
[email protected] Associate Publisher and Editor • LINDA BECKER (847) 405-4020 •
[email protected] Contributing Editor • JOY LEPREE ANDERSON (856) 582-9554 •
[email protected] Art Director • COURTNEY FATHERS (248) 244-1292 •
[email protected] Production Manager • BETH MCCLELLAND (412) 306-4354 •
[email protected] Reprint Sales • JILL DEVRIES (248) 244-1726 •
[email protected] E-Media Sales • SUSAN HEINAUER (412) 306-4352 •
[email protected] Classifieds • BECKY MCCLELLAND (412) 306-4355 •
[email protected] Publishing Director, Manufacturing and Gaming Groups JOHN R. SCHREI • (248) 786-1637 Editorial Office 155 N. Pfingsten Road, Suite 205, Deerfield, IL 60015 (847) 405-4000 • FAX (248) 502-1001
BNP CUSTOM MEDIA GROUP CHRISTOPHER WILSON (248) 244-8264 •
[email protected] ADVERTISING SALES NORTH AMERICA • Sean Meaney • National Sales Manager 530 Humiston Drive • Bay Village, OH 44140 (440) 895-0919 • FAX (248) 502-1051 •
[email protected] NORTH AMERICA • Anne Armel • Publisher 155 N. Pfingsten Road, Suite 205 • Deerfield, IL 60015 (847) 405-4043 • FAX (248) 786-1441 •
[email protected] EUROPE • Carolyn Eychenne • European Sales Representative 7 rue de Maurepas • 78000 Versailles France tel/fax: 011 33 1 30 21 15 62 •
[email protected] CORPORATE STAFF BNP Media Corporate Office • (248) 244-6400
SINGLE COPY SALES ANN KALB • (248) 244-6499 •
[email protected] LIST RENTAL
New York State Gov. Andrew M. Cuomo appointed the Kevin L. LaMontagne, CFO of Pulaski, N.Y.based Fulton, to serve as a member of the state’s Regional Economic Development Council. The council is expected to redesign the relationship between the state government and businesses to stimulate economic development and create jobs statewide, according to the governor’s statement. The council is eligible to apply for $1 billion in state funding for projects determined to be part of economic stimulus strategy.
Maguire Products Inc., Aston, Pa., promoted Frank Kavanagh to vice president of sales. Kavanagh will be responsible for the company’s sales activities worldwide and will directly supervise agents and distributors in the United States, Latin America and Australia.
KEVIN COLLOPY • Sr. Account Manager (800) 223-2194 x684 •
[email protected] MICHAEL COSTANTINO • Sr. Account Manager (800) 223-2194 x748 •
[email protected] AUDIENCE DEVELOPMENT Audience Development Coordinator • HAYAT ALI-GHONEIM Corporate Fulfillment Manager • MEGAN NEEL Corporate Audience Audit Manager • CATHERINE M. RONAN
SUBSCRIPTIONS Contact Customer Service at Tel. (847) 763-9534 or Fax (847) 763-9538 or e-mail
[email protected]. Via Web: to subscribe or submit an address change, visit www.process-heating.com and click on subscribe. Via Mail. Send your old address label along with your new address to Process Heating, PO BOX 2146, Skokie, IL 60076.
GET MORE ONLINE Search and read our archives. Every article and column published in Process Heating since 1998 is available online! • • • •
• •
Get daily updates Read web-exclusive articles, product writeups, news and more Sign up for our weekly eNewsletter Search our Online Buyers Guide, complete with expanded listings, data sheets, and other manufacturer-supplied materials, as well as links to manufacturers’ sites Use our Google-powered search engine to find content on www.process-heating.com or all of BNP Media’s web sites Contact us
WWW.PROCESS-HEATING.COM BNP MEDIA HELPS PEOPLE SUCCEED IN BUSINESS WITH SUPERIOR INFORMATION
Got Maintenance? Plant operators are finding out the advantages of having their heaters serviced by Heatec on a regular basis. There are important benefits of having a contract for our service technicians to do preventative maintenance once or twice a year. An important benefit is safety. Our technicians make sure all limit devices are working properly. Insurance companies usually prefer that specialists, such as Heatec technicians, perform services related to safety. Fuel savings is another important benefit that results from maintenance that includes tuning the burner. Moreover, preventative maintenance usually eliminates unexpected heater
shutdowns at times that interrupt production. Preventative maintenance can usually be done without adversely affecting production schedules. Another benefit is usually a reduction in costs for each service call. This results from lower travel expenses when our technicians can make service calls at other plants in the same area. Moreover, many of our technicians reside in diverse locations that reduce travel to plant sites. Call today to find out what kind of service contract would work best for you.
HEATEC
( % ! 4 % # DQ$VWHF,QGXVWULHV&RPSDQ\ :,/6215'&+$77$122*$7186$)$;KHDWHFFRP