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Company News
Principle of fluidized bed dryer
From:Jiangsu Yutong Drying Engineering Co. Ltd Updatetime:2026-04-14 Visits :1006
1. Fluidization process
The hot air is evenly blown upward from the bottom of the equipment through the air distribution plate.
When the wind speed reaches a certain value:
Particles no longer accumulate statically
Lifted, rolled, and suspended by air currents
The whole behaves like fluid
This state is called a fluidized bed (ebullating bed).
2. Drying principle
When the material is in a fluidized state:
The contact area between particles and hot air is extremely large
Heat is quickly transferred to the material
The moisture on the surface of the material quickly evaporates into water vapor
Water vapor is carried away by flowing hot air
The whole process has fast heat transfer, even drying and no dead ends.
3. Gas-solid separation and discharge
The dried particles are heavier and remain in the bed or discharged from the overflow port
Fine dust moves upward with the airflow and is recovered through the cyclone separator and bag dust collector.
Purified exhaust gas is discharged





