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Products>Dryers and Coolers>Fluid Bed Dryer....
 
  DRYER AND COOLER
 

...Fluid Bed Dryer & Cooler...
 

SALIENT FEATURES

 

A

 Intimate contact of hot air and solids result in high heat transfer co-efficient. This makes the drying system compact.
A High operating temperatures possible because of rapid heat and mass transfer rates.
A

No overheating of heat sensitive products because of special constructional features.
A Unique and thermally efficient design of embedded Heat Exchanger.
A Lower capital costs.
A Easy control of residence time & simple to adjust moisture content of dried product.
A

Easy handling of feed and product.No Moving parts, stabilized operation and negligible maintenance.
 
TYPES OF FLUID BED DRYERS
A. BATCH-TYPE CONTINUOUS FLUID BED DRYER
 
It comprises of a cylindrical or square chamber fitted with a distributor plate. The fluid bed plate can be rotated. Hot air at 90°c is supplied from below through a conical vessel. Wet material is fed from the top and dried product is discharged downward by rotating the plate. This system allows continuous feed and discharge
BATCH-TYPE CONTINUOUS FLUID BED DRYER
 
SALIENT FEATURES:
 
1 Accurate control of retention time and uniform drying.
2 High co-efficient of heat transfer.
3 Simple operation.
4 No damage to particles by attrition.
 
 

B. COUNTINUOUS FLUID BED DRYER

 The distributor plate is fixed at the bottom of a rectangular chamber. Hot air is passed through the Distributor Plate and wet material is fed continuously in a fixed quantity and distributed by a disperser. The air velocity can be varied as desired.
    
After lapse of designed residence time, the dried product is continuously discharged at the overflow outlets. The exhaust air is vented out after being processed through a dust separation system.

SALIENT FEATURES:

  • Operation can be easily controlled by adjusting feed and temperature of hot air, based on the product temperature at the outlet.
  • Over and under flow features provide uniform drying of small and large size particles.
  • Wet feed is mixed with semi-dried product in the chamber; hence products with higher moisture content can also be fluidized and dried.
  • The drying chamber can be partitioned by baffle plates resulting in more uniform drying.


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