Heat Transfer Area 18M2 Thermal Oil Heating Hollow Paddle Dryer

The heat transfer surfaces of hollow paddle dryer includes paddle, stirring shaft, and wall surface. And the heat transfer area of paddle is the great majority, so the structure of the equipment is compact and heat transfer area of unit volume is high. Stirring and mixing make the material turn over tempestuously so that the material can get high heat transfer coefficient,the occupied area and space is small and the plant capital cost is saved.Because the structure of paddle is special, during the drying period,material will be extruded and loosed, drying is strengthened. Loading ratio of drying chamber is high, it can be 80%-90%, drying time can be regulated from a few minutes to a few hours by regulating the feeding speed, the rotary speed of stirring shaft and the loading ratio. And from feeding port to discharging port the movement of material is basically piston motion. It residence time distribution is narrow, so the moisture of product is uniform. The paddle that on the stirr.

1.The dryer is very compact and small installation area is needed. Most the heating area is from paddles which can make the dryer structure very compact.

2.Heat efficiency is higher than 80%. The indirect heating design considerably reduce heat loss.

3.The drying temperature can be separately controlled to fit different drying stages.

4.Paddle dryer has high flexibility for wide moisture range. The residence time of wet material inside the drying chambers adjustable from minutes to hours by changing the shafts rotation speed and adding the overflow plate.