Gas-Fired Walk-In OvenNo. 948 is an indirect gas-heated 650°F (343°C) walk-in oven currently used for evaporating water from plastic. It has 500,000 BTU/hr installed in a modulating natural gas burner that fires into an alloy radiant tube. Workspace dimensions are 60 x 72 x 72". The oven has a top-mounted heat chamber, Type 304, 2B finish stainless steel interior and an aluminized steel exterior, with 5" thick insulated walls. The insulated floor is lined with truck wheel guide tracks. A 6,000 cfm, 5-hp recirculating blower provides horizontal airflow to the workload.
Grieve Corp., (847)546-8225, firstname.lastname@example.org, www.grievecorp.com
Walk-In, Truck-In OvensProcess ovens are designed for curing, preheating, aging, drying, heat-treating and other applications. Features include angle-iron frame in all models; 3" insulated sides, top and rear; 14 to 16 gauge cold-rolled steel exterior; 16 gauge aluminized steel interior; 16 gauge aluminized steel airflow ducts; explosion-relief door latches or hatches; standard lifting eyes and mounting brackets; and a gray enamel exterior finish on zinc rich primer.
Steelman Industries Inc., (903) 984-3061, email@example.com, www.steelman.com
Drying SystemsLine of drying systems includes Jetzone fluidized bed dryer/puffer/toaster, fluidized bed cooler, impingement cooler, forced convection cooler and belt coolers. Jet-Tube fluidization technique provides fast, uniform and efficient heating, cooling, toasting or puffing of particulate free-flowing products. It is well-suited for dense, difficult-to-cool products. The high-velocity impingement technique provides fast, uniform cooling of a range of food and non-food industry products. Turbo-Jet forced convection cooler, designed for existing or new post-oven conveyor systems, provides efficient pre-cooling prior to freezing or packaging.
CPM Wolverine Proctor, (215) 443-5200, firstname.lastname@example.org, www.cpmwolverineproctor.com
Paddle ProcessorA vapor-tight design allows for indirect heating, drying or cooling under vacuum or with an internal pressure, making it suitable for temperature-sensitive and hazardous materials. Dual counter-rotating shafts with hollow wedge-shaped paddles produce uniform mixing and high heat transfer rates. Model 3.3W has 107 ft2of heat transfer area.
Komline Sanderson, (800) 225-5457, email@example.com, www.komline.com
Circular Tray DryerTurbo-Dryer can be used to calcine or sinter fine metal oxide powders. Capable of operation at temperatures up to 1,202°F (650°C), the continuous tray dryer includes an internal electrical heating system that helps remove residual moisture. Dry air or nitrogen is used to purge water vapor from the system, keeping fines carryover to a minimum. The proprietary design consists of a stack of rotating circular trays in a sealed enclosure. Material is fed onto the top tray, and after each revolution, it is wiped onto the next lower tray. Internal Turbo-Fans circulate heated gas in the enclosure to provide the drying medium.
Wyssmont Co. Inc., (201) 947-4600, firstname.lastname@example.org, www.wyssmont.com
Custom Designed Recirculating OvensStandard and custom designed ovens are offered in either batch or continuous types. Sizes range from benchtop to industrial truck ovens in single- or double-door styles. Ovens may be either electric or gas fired. Designs include recirculating truck, walk-in, table-top shelf and front loading. The company also has the capability to manufacture or rebuild most air heaters used in recirculating ovens.
Thermcraft Inc., (800) 735-2856, email@example.com, www.thermcraftinc.com
Class A OvenAble to process a range of materials, Model 49C-650D is used by heat processors that require a Class A oven. Weighing in at 1,180 lb, the oven has two independent 5.9 ft3oven chambers. It can reach a maximum temperature of 650°F (343°C).
Precision Quincy Corp., (815) 338-2675, firstname.lastname@example.org, www.precisionquincy.com
Industrial Batch, Conveyor OvensIndustrial dryers, ovens and furnaces are suited for a range of applications and industries. Heating equipment is designed in both batch and continuous designs (overhead trolley, chain-on-edge and belt conveyors) with standard temperature ratings of 500, 650, 800, 1000, 1250 and 1400°F. They can be heated by gas (direct or indirect fired), electric and steam. The company also offers standard and custom batch equipment, including drop bottoms, pit furnaces, fume incinerators and various conveyorized units. Typical applications include finishing, preheating, composite curing, aging, tempering and other heating applications.
Wisconsin Oven Corp., (262) 642-3938, email@example.com, www.wisoven.com
Mechanical Convection Lab OvensBlue M LO Series lab ovens are designed for moisture drying, curing, baking, aging and general testing needs. They utilize horizontal airflow, which allows for tighter temperature uniformity. Adjustable overtemperature control helps prevent damage to the oven or its load. They operate within a temperature range of 50 to 500°F (10 to 260°C). Workspace dimensions range from 1 to 28.8 ft3.
Thermal Product Solutions, (800) 586-2473, firstname.lastname@example.org, www.thermalproductsolutions.com
Ovens and Dryers
Thermatrol electric, gas or propane conveyor ovens utilize infrared heaters, infra-air, or combination infrared/convection heating so specific process needs are met. Other features include inline integral coolers, ability to interface with external PLCs, and integration with robotic operations. The infrared heat panels provide uniform curing and/or drying over the entire process. Recirculating hot air using high-velocity air knives breaks up moisture barriers and drives solvents away from the substrate.
Hix Corp., Thermatrol Div., (800) 835-0606, www.ovens-dryers.com
Fluid Bed Roaster
A high velocity, air impingement and fluidized bed processor, AeroFlow has high temperature capabilities that support applications in drying, roasting, puffing and cooling. Redesigned in 2008, the internal dust separation units reduce its footprint and installation time. Material handling is custom designed to accommodate products with critical handling or fluidization characteristics. Dual impingement systems are available for webs and fabricated items. Applications include tobacco, catalysts, polymers, wood products, pharmaceuticals, aquaculture and animal feeds, coated webs, fine chemicals, nonwovens, pulp and various food products.
Buhler Aeroglide, (919) 851-2000, www.aeroglide.com
Infrared Conveyor Oven Preheats Plastic Bottles
Electric infrared conveyor oven is used to heat plastic antifreeze bottles that are deformed during the production process. After heating the bottles, the paper labels can be removed and the plastic recycled. The oven has a 6” x 3.5’ x 1.5’ heating chamber and a 1,400°F (760°C) maximum emitter rating. Removable exterior panels ease access to the infrared heating and cooling systems. The infrared conveyor oven uses two electric infrared heaters for a total output of 19 kW and 27 A at 480/3/60.
Wisconsin Infrared Systems, (262) 642-3938, www.wisinfrared.com
Benchtop Temperature Chamber
Benchtop unit has been updated with the Watlow EZ-Zone PM controller to allow for extended operational capabilities, including the ability to run a ramping profile with up to 40 steps and two events. The 900 Series benchtop chamber is designed for high and low temperature simulation where close temperature tolerances are required. It can be used for small-lot qualification testing, burn-in, life test, temperature cycling, or research and development.
Despatch Industries, (888) 337-7282, www.despatch.com
Tail Threading Unit for Double-Fabric Dryer Sections
TailDoc threads a sheet tail through the machine with the help of compressed air. The tail-threading unit consists of a doctor blade and a blade holder. The doctor blade separates the sheet tail from the cylinder surface with the help of a counter-directed air blow, and guide-blows usher the tail to the next fabric nip. Nozzles placed in the blade holder area create a tail-stabilizer zone that settles the tail, prevents cross-machine sway and ensures fast tail tensioning and smooth transfer. The tail-threading unit is suitable for double-fabric dryer sections of paper or board machines.
Metso, 358 40 543 7824, www.metso.com
Freeze Drying Test Plant
The Ray 1 performs controlled freeze drying of food and drink products for small-scale production of market samples, or for testing of new products prior to full-scale production. Made from high-quality stainless steel for operation in the food sector, the freeze drying pilot plant has four product trays for maximum space utilization and doors to three sides to ease access and simplify cleaning. A dedicated computer controls the freeze drying parameters and monitors the entire process.
GEA Niro, GEA Process Engineering, +45 3954 5454, www.niro.com
Drying/Thermal Processing Systems
Line includes rotary dryers, coolers, kilns, calciners and combination dryer-coolers. Thermal systems can be designed in many configurations, including parallel flow or counter-current flow, and direct or indirectly fired. Fuel sources include natural gas, oil, steam, waste heat and steam.
Feeco International Inc., (920) 468-1000, www.feeco.com
Oven Design Technology
The company’s dryer and oven engineering is completed using Fluent computational fluid dynamics (CFD) analysis software to model airflow and temperature uniformity prior to manufacturing. This technology allows oven and dryers designed to be maximized before shipment.
C.A. Litzler Co. Inc., (216) 267-8020, www.calitzler.com
Continuous Heating and Cooking System
ImageWave uses single-mode high power microwave energy that feeds directly into the product and then reflects directly back with minimal wasted energy. Because of its design, the system achieves heat distribution and focus in a smaller footprint area than industrial microwave systems that use the multi-mode standard. The system’s DynoFlect instrument and control automatically tunes in real time to maintain set power delivery and system parameters.
Ferrite Co. Inc., (800) 854-1466, www.ferriteinc.com
Solar Process Heating
Thermal energy generated by MicroCSP collectors provides process heat and steam in 200 to 400°F (93 to 204°C) temperature range. The concentrated parabolic trough technology supplements existing boilers, offsetting traditional natural gas or propane purchases, while providing an emission-free source of high quality heat. Applications include food preparation processes, industrial processes, material drying, water heating, and preheating makeup air, water or fluid to improve plant efficiency and cleaning.
Sopogy, (866) 767-6491, www.sopogy.com
Process Gels, Slurries and Solids
Solidaire dryers have high-speed, adjustable paddles that create an agitated, dense, thin layer of material against the jacketed vessel wall. A jet-rotor design allows injection of gas or liquid through the paddles into the thin layer of material flowing along the wall of the unit. Operating modes include indirect, direct and a combination of both. The unit can process a range of heat-sensitive materials, from free-flowing solids to wet cakes and slurries, as well as materials whose flow characteristics change during drying. The dryer also can handle fine, low-density particles that might be fluidized in mechanically or pneumatically agitated equipment.
Bepex International LLC, (612) 331-4370, www.bepex.com
Indirectly Heated Rotary Calciners
Designed to provide an efficient means for continuously processing granular materials and powders at high temperatures in oxidizing, inert or reducing environments, rotary calciner consists of a cylindrical rotating tube housed in a refractory-lined gas or electric furnace, positively sealed to prevent air infiltration. Product quality is optimized by a design that establishes and maintains the temperature profiles required of the process. The internal-flight design promotes a gentle tumbling action and provides uniform exposure and efficient heat transfer.
Alstom Power Inc., Air Preheater Co., Raymond Operations, (630) 971-2500, www.airpreheatercompany.com
Radio Frequency Web-Drying System
Intended for applications in the converting and textile industries with patterned water-based glue and coatings, Macrowave selectively heats only the patterned coatings (wetted sections) on the web. The radio frequency dryer leaves the bound moisture in the substrate intact, thus preventing overdrying, distortion and shrinking. Capable of operating at speeds up to 1,500 ft/min, the drying system reduces make-ready because radio frequency power is instant on/off and energy is only consumed with a load in the system.
Radio Frequency Co. Inc., (508) 376-9555, www.radiofrequency.com
Infrared Ovens and Heaters
Whether curing paint or powder, drying inks, processing plastics, or baking bread, Thermazone can help with the process. Infrared ovens, utilizing the Black Body emitter, transform nearly 90 percent of consumed energy into useful heat. The high temperature aluminized steel housing and stainless steel protective grid equip the heater to operate effectively in the harshest industrial environments. Systems are offered in more than 50 standard oven configurations with optional conveyors, exhaust blowers and vestibules or unusual applications. Custom-designed ovens can be manufactured to meet exact process requirements.
BBC Industries, (800) 654-4205, wwww.bbcind.com
Custom Ovens and Dryers
Designed to utilize specific combinations of radiant and air-impingement systems to satisfy the user’s process requirements, custom ovens and dryers ensure product uniformity and maximize production. Suited for use in chemical, food, finishing, plastics and rubber, and textile operations, the ovens and dryers range in size from high volume to small batch or lab prototype.
Lanly Co., (216) 731-1115, www.lanly.com
High-velocity air/infrared ovens combine two technologies for applications demanding evaporative processing and fast rampup of surface temperature. Warm air is passed over the coating surface to remove VOCs or moisture without disrupting the coating. As evaporation is completed, infrared elements rapidly raise the surface temperature to polymerize the coating.
George Koch Sons, (812) 465-9771, www.kochllc.com
Electrically Heated Coreless Screw Dryer
Spirajoule provides optimal thermal transfer to finely divided wet and dry products. Maximum efficiency is achieved by the product’s direct contact to the heated screw. Product dwell time, temperature and air extraction are fully adjustable. Full inspection of the internal chamber allows eases cleaning and product changeover. The electrically heated coreless screw also allows injection of steam or dry air.
BNW Industries, (574) 353-7855, www.belt-o-matic.com