Method of Solid Handling

Method of Solid Handling

Method of Solid Handling:

1. Materials not agitated:

a.            Batch type: These types of dryers are used for small amount of wet materials at a time. Here the drying process takes place by part and the whole material is divided and dried in different batch.

Example: Tray and compartment dryers, freeze dryers, vacuum dryers, etc.

b.           Continuous type: In continuous dryers, the drying process is continuous manner i.e. the materials are not dried part by part rather the whole bulk of the material is dried at a time.

Example: Tunnel dryers, drum dryers, belt dryers, festoon dryers, etc.

2. Materials agitated:

a.            Moving bed dryers:

i.               Batch type:

-                     Vacuum tumble dryer

-                     Pan dryer.

ii.             Continuous type:

-                     Rotary bed dryer

-                     Turbo bed dryer

-                     Vibrating-conveyor dryer

-                     Tower and cascade dryer

-                     Screw conveyor dryer

b.           Fluidized bed dryers:

i.               Batch type:

-                     Vertical dryer

ii.             Continuous type:

-                     Horizontal vibrating-conveyor dryer

-                     Vertical dryer

c.            Pneumatic bed dryers:

i.               Batch type:

ii.             Continuous type:

-                     Spray dryer

-                     Flash dryer.