Advantages: Compared with other granule drying equipment drying process, the fluidized bed drying equipment drying process has many advantages:

● Particle material can be easily fluidized and conveyed.

● For the dry heat-sensitive products to avoid local material overheating, adaptability. Does not degrade the molecular weight of the product, does not destroy the physical and chemical properties of the product.

● Because the fluidized bed can give the material and the fluid medium to provide the bigger contact area, causes the material to mix evenly and carries on the sufficient heat transfer and the mass transfer, therefore has the extremely high thermal efficiency.

● In the fluidized bed, a tube-type or plate-type heat exchanger can be used for indirect heating or cooling, which can make the material get higher evaporation speed at lower temperature, save energy and reduce the exhaust gas purification facilities.

• Drying and cooling can be efficiently carried out in a combined fluidized bed, thus saving investment and reducing production costs.

● automatic collection of each paragraph drying medium temperature, bed surface pressure and other important data to achieve computer control to meet the drying equipment drying process requirements.

● The fluidized bed is suitable for granular, powdery and massive products with an average particle size between 50 and 5000 microns.


Basic types: The fluidized bed can be divided into three basic types depending on the mode of flow of solids within the equipment.

● vibrating fluidized bed: in the fluidized bed to exert a certain exciting force, the fluidized state of the material is the vibration effect and the synergistic effect of airflow generated.

● Boiling fluidized bed: the fluidized state of the material depends on the role of air flow. Suitable for fluidizable materials and high-humidity materials that can be back-mixed.

● Multi-layer fluidized bed: There are two or more layers of the distributor. Air flow and material particles reverse flow.