Drying equipment is widely used in industrial production. In order to adapt to materials of different shapes and properties, the currently widely used drying equipment mainly includes: box dryer, vacuum rake dryer, spray dryer, airflow dryer, fluidized dryer, disc dryer and paddle dryer. Leaf dryer. In the production related to sludge treatment, paddle dryers are widely popular due to their unique characteristics.


1. The shaft, blade and shell can transfer heat, the drying area is large, the drying speed is fast, the thermal efficiency is more than 2 times that of ordinary drying equipment, and the thermal efficiency can reach more than 80%.

2. Various operation methods, intermittent or continuous operation, pressurized or vacuum operation, and also suitable for heat-sensitive materials.

3. The shaft speed is adjustable (generally 3-25 r/min, peripheral speed 0.03-1.5m/s), which can control the drying temperature, drying time, final moisture content, output, etc. of the material, and the material is evenly stirred and dried.

4. Because of conduction heating, less gas is required for drying, and energy saving is remarkable. Compared with similar products, it saves about 40% of steam and 30% of electricity.

5. There is very little dust entrainment, the exhaust gas is easy to handle, and the post-processing equipment such as powder object capture system and material vapor recovery system have a small load or can be omitted.

6. The structure of the paddle is special, and its heating surface has the function of mutual self-cleaning.

7. When the inert gas is used as the carrier wet body, the organic solvent can be recovered.

8. The double shaft rotates at low speed, and the wear of the blades and shaft is very small.

9. Fewer wearing parts, low operation and maintenance costs, only the inner static and dynamic ring of the bearing bush and the rotary joint are the wearing parts.

 

As a new type of energy-saving dryer, hollow paddle dryer is widely welcomed in the context of energy saving and environmental protection because of its energy saving and good operating environment, and its application will be increasingly widespread.