ANDRITZ - Model VDC - Fluid Bed Drying-Cooling System
Drying and cooling takes place in the product chamber by convective heat and mass transfer only, between the fluidization gas and the product. Two different designs are supplied, as single or as double mass vibrating system depending on the fluid bed size. This type of fluid bed is used for food and feed as well as for chemical products, mainly for lower line capacities. It is characterized by the vibrating design of the fluid bed to enhance fluidization of the products with a wide particle size distribution range.
The VDC type can be designed as dryer only, as cooler only, or as a combination of dryer and cooler. The heat and mass transfer is purely convective between the fluidization gas and the product. The material of construction can range from carbon steel to high-alloy clad carbon steel for parts in contact with the product.
The VDC fluid bed can be modified with several equipment combinations for intake and exhaust air treatment, such as air filters, steam-heated air heaters, combustion chambers, air conditioning units, as well as cyclones, scrubbers, bag filters, and similar.