Sludge Dryer

Paddle dryer is an indirect drying equipment with hollow paddles/blades installed usually in a horizontal hollow axle rotating in a vessel. the wet feed is dried when the rotating paddles stir the materials and resulting in a close contact with the heated paddles and vessel shells. The dryer has a high heating transfer surface and high heat efficiency due to no heat loss in exhaust gas(only heat loss is radiation via heavily insulated dryer vessel, which is very trivial). The paddles are self-cleaning due to relative motion between the wet feed and the wedge-shaped paddles. Paddle dryer can work in batches or continuously, in vacuum, protective atmosphere or pressure conditions according to drying requirements and nature of wet feeds.  The heating medium can be thermal oil or hot water with pressure from 0.1 MPa to 0.8 MPa, Steam with pressure up to 1.5 MPa. Working temperature: 40 C to 300 C. Evaporation capacity: 8Kg to 60Kg/m2.h

Main features:

1.Low energy consumption. Indirect heating, no heat loss due to exhaust gas; minimum heat loss via radiation due to heavily insulated Dryer body. Only 1.2kgs of steam is required to vaporize 1 kg of water.

2. Low manufacturing cost, huge heat transfer area per unit volume, feed dwelling time and dryer sizes can be less, therefore less floor area and smaller workshop is required.

3. Suitable to dry a wide range of materials, heat-sensitive material can be handled with the right heating medium, meanwhile it can also work under high temperature process other materials. Heating medium can be steam, hot water, thermal oil, cold water, etc.. it can work in batches or continuously.

4.minimum environmental pollution: Enclosed process, no fugitive gas

5. low operating &maintenance cost.