Jet-Tube Fluidized Bed
High velocity air passing through long tubes creates a bed-of-air, which suspends and tumbles the product as the air reflects from a solid, non-perforated conveyor. The open space between the tubes forms a chamber to settle out smaller pieces and return process air for recirculation without affecting the fluidizing air jets. During fluidization, each particle is surrounded and separated from adjacent particles by the treatment air.
Why use Long Tubes?
Jet-tubes create a large chamber between the product and air return plenum to settle out fines from the recirculated air stream, preventing product loss. This chamber reduces returning air velocity, preventing interference with the main fluidizing air stream. Jet-tubes project an undispersed column of air into the product bed, resulting in optimum fluidization and highest heat transfer. The process is not conveyor loading sensitive as the treatment air is evenly dispersed before contacting the product.
Fluidized Bed Advantages
Jet-tube technology and state of the art design combine to produce the highest performance and highest quality equipment for fluidized bed processing.
High Capacity:Jetzone Fluidized Bed Dryers process the highest volume of product per sq. ft. of any system available. Compared to conventional methods, production can be increased by up to 90%, using your existing space.
Uniformity: Each particle is surrounded by the treatment air. Since the entire product bed dries very quickly and at the same rate, moisture, texture and color uniformity are assured.
Maximum Product Yield: The gentle product handling characteristics of the Jetzone fluidization technique avoids product breakage and abrasion. Waste is minimized and more product goes to packaging.
Versatility: Jetzones will process a wide variety of product types and can be quickly re-set to process different products.
Sanitation: Jetzone dryers utilize a solid non-perforated conveyor which eliminates fines sifting, plugging or carryover problems. The design reduces hygiene problems and meets high sanitation standards.
Reliability: Jetzone equipment features rugged unit-welded industrial grade construction for longer useful life. Many units have been in continuous service for 40 to 50 years. The systems are fully-assembled and factory tested prior to shipment.
Maintainability: Simple, regular maintenance procedures provide years of service. Maintenance requires little downtime and can be readily performed by plant personnel. All equipment is supported with a full line of spare parts and a global service organization.
Less Floor Space: High performance drying capability results in a much smaller unit to produce substantially more product.
Fuel Efficiency: Rapid heat transfer results in excellent fuel efficiency. The compact, heavily insulated, continuously welded housing eliminates air leakage problems. The high percentage of recirculated process air leads to lower consumption of fuel.
Zoning: Separate control zones (fluidization and temperature allow products to be dried or puffed and then toasted in a single machine).
The most widely used fluidized bed processor is designed to be compact, with combustion chamber and recirculation fans installed within the dryer housing.
The process air is recirculated through cyclones to remove any airborne fines. A high percentage of air recirculation leads to lower fuel consumption.
Shown is an SN series dryer equipped with an oscillating pan type conveyor.