Steam Heat Source Hollow Blade Paddle Dryer Continuous Sludge Dewatering

The product can indirectly heat or cool paste, granule, powder and slurry materials, and can complete drying, cooling, heating, sterilization, reaction, low temperature combustion and other unit operations. The special wedge-shaped agitated heat transfer blade in the equipment has high heat transfer efficiency and self-cleaning function of heat transfer surface.

 

 

The main structure is a W-shaped shell with a jacket, which is equipped with a pair of hollow low-speed rotating hollow shafts. A number of mixing blades are welded on the shaft. The jacket and the hollow mixing blades are all equipped with heat carriers, and the two heating surfaces heat the materials at the same time. The heat carrier is usually fed from the middle of the dryer and discharged from the other side through the surface of the material layer in the agitated state.
Wedge-shaped hollow blades are densely arranged on the hollow shaft, and the thermal medium flows through the blades through the hollow shaft. The unit effective volume has a large heat transfer area. The temperature of the thermal medium ranges from - 40 ° C to 320 ° C, which can be water vapor or liquid type: such as hot water, heat transfer oil, etc. Indirect conduction heating does not carry air to take away heat. Heat is used to heat materials. The heat loss is only the heat dissipation to the environment through the insulation layer of the reactor body. The heat transfer surface of the wedge-shaped blade has the function of self-cleaning. The relative movement of the material particles and the wedge-shaped surface can wash off the attached materials on the wedge-shaped surface, so that the clean heat transfer surface is kept in motion all the time.

 

 

Hollow shaft dense arrangement with the wedge-shaped hollow blade, the heat medium through the hollow shaft flow through the blade. The effective volume of heat transfer area is very large, the heat medium can be water vapor, can also be hot water or heat conducting oil. The heat transfer medium flows through the shell jacket and the hollow stirring shaft through the rotating joint, and the hollow stirring shaft has a different internal structure according to the type of the heat medium to ensure the best heat transfer effect.

In the pulp and jacket access to hot oil, heating at the same time, the upper part of the discharge port at the same time through the heated dry air after further drying, thus greatly increasing the drying strength of the device. Evaporated moisture from the tail gas out of the dryer, wet air discharged by the induced draft fan outdoors.