Fluid bed dryers force heated gas through a permeable surface where it comes into direct contact with a bed of solid materials, causing the moisture inside them to evaporate. The wet material rests on the surface of a perforated plate and hot gas - usually air – rises up through the holes. Fluidization is achieved when the solid materials display fluid-like behaviors, such as the ability to flow. As the temperature and pressure rises, evaporation occurs and moisture inside the materials becomes a gas and diffuses with the air. Dehydration can also occur if the materials are dried long enough.
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Carrier Vibrating Equipment, Inc.Louisville, KY 502-969-3171 Established in 1950, Carrier is internationally known for its pioneering work in the field of vibratory technology and specializes in the manufacture of fluid bed dryers among other related equipment, such as vibrating conveyors, feeders, screeners, fluid bed coolers, vibrating spiral elevators, quality corona treaters, in addition to many more. Please call Carrier today for a quote!
Marion Mixers, Inc.Marion, IA 800-397-6371 Marion Mixers is the "brand of choice" for fluid bed dryers, among all manners of related equipment. This globally-esteemed company is recognized as the innovation leader in custom-designed mixing applications. In industries including dairy, plastic, mineral, aggregate, biosolids, energy and many more, Marion Mixers is unsurpassed in quality, customer-support and machine durability.
The GRIEVE CORPORATIONRound Lake, IL 847-546-8225 The Grieve Corporation started out in 1949 with one goal in mind: to create a line of products its customers could believe in. Today, while much at Grieve has changed, its commitment to that goal is steadfast. The Grieve Corp.`s 100,000 square foot facility houses a team of experienced professionals whose capabilities can bring you the superior fluid bed dryer you're looking for.
Patterson Industries (Canada) LimitedScarborough, ON 800-270-3737 For top-notch fluid bed dryers, turn to the experienced professionals at Patterson Industries (Canada) Limited, leading designers, engineers and manufacturers of a wide range of process equipment and turnkey systems for a variety of applications depended upon by a wide range of industries. Please contact Patterson today or browse through their website for full product and service listings.
Central Air CompressorWarren, MI 877-523-7277 A distributor of fluid bed dryers, Central offers a wide variety of equipment, offering brands such as Champion, Powerex and CompAir. Central's trained support team is eager to assist you, whether it is through its 24 hour emergency operation or during regular business hours. Please contact Central today with any questions or go to the website for full listings of products and services.
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Fluid bed dryers are used for small particles or materials that are sticky, temperature sensitive or fragile because fluidization can be reached at temperatures lower than the boiling point and is relatively gentle. The material should be relatively uniform in size, shape and moisture content to ensure that all particles are properly and completely dried. Utilized in the pharmaceutical, agricultural, food and chemical industries for powders and agglomerates, fluid bed dryers are used with pesticides, detergents, pigments, milk powder, yeast, powdered flavorings and more. Depending on the application, the permeable plate can vibrate to achieve fluidization for certain materials while a circulating bed causes the particles to become suspended. Fluid bed dryers are generally used for industrial-sized batches, and standard capacities contain loads from 30 to 25,000 pounds and range from 24 to 72 inches in diameter.
Fluid bed dryers are made from stainless steel and can be horizontally or vertically oriented depending on the space available. A large rounded tank or rectangular box with multiple intake and output valves contains the permeable surface and holds the materials. The supply hose for the gas is connected at the base of the tank because gas will rise once heated. Pipes are fitted to transport the product into and out of the tank, and there may be multiple internal chambers in the tank. Once the material has entered the tank, the heated air is released. Heating panels or tubes immersed in the material can also contribute to the rising temperatures. The velocity of the air increases to a point where it exceeds the velocity of gravity of the particles and fluidization occurs. The particles display fluid-like behavior and every piece of the material shakes and moves, allowing direct contact between the air and the complete outer surface of the material. This prevents clusters from forming and allows each particle to reach the same moisture content and level of dryness. Once fluidization is reached, the product is able to flow through the bed and exit the tank. Continuous fluid bed dryers allow a constant stream of material to enter the tank as the dried product is removed. This process is much faster than drying material in batches, and some models of fluid bed dryers reach up 99% efficiency.