The working principle of the rotary dryer is mainly based on heat exchange and evaporation processes. The sludge enters the rotary cylinder of the dryer through the feeding device. At the same time, the high-temperature hot air generated by the hot air equipment is sent into the cylinder to fully contact with the sludge. Under the action of hot air, the water in the sludge evaporates rapidly, thereby reducing the moisture content. The evaporated water vapor is discharged through the induced draft equipment, and the dried sludge is discharged through the discharging device.

 

 

1. Large processing capacity: Rotary dryers usually have a large processing capacity and are suitable for large-scale sludge treatment needs.

2. Wide application scope: not only suitable for sludge treatment but also widely used in building materials, metallurgy, mineral processing, chemical industry, cement and other industries to treat various materials with high wetness and high specific gravity.

3. High energy efficiency: Through optimized design and advanced heat exchange technology, the rotary dryer can achieve high efficiency and energy saving. For example, some advanced rotary dryers use the drying heat recovery cycle technology of the dehumidification unit, which can significantly improve energy efficiency.

4. Easy to operate: Rotary dryers usually have an automated control system that enables remote monitoring and automatic adjustment, reducing operating difficulty and labor costs.

Application Effect

5. The moisture content is significantly reduced: After the sludge is treated by the rotary dryer, the moisture content can be reduced to below 10%, which greatly reduces the volume and weight of the sludge and facilitates transportation and storage.

6. Improved sludge stability: The dried sludge has good stability, reducing the risk of odor and pathogens.

7. Resource utilization: The calorific value of the dried sludge is increased, and it can be used as fuel or in the production of building materials, etc., thus realizing the resource utilization of sludge.

 

1. Pretreatment: Before the sludge enters the rotary dryer, it usually needs to be pretreated, such as concentration and conditioning, to reduce energy consumption in the subsequent drying process.

2. Hot air temperature control: Hot air temperature is one of the key factors affecting the drying effect and needs to be reasonably adjusted according to the properties of the sludge and treatment requirements.

3. Equipment maintenance: Regularly maintain and service the rotary dryer to ensure its normal operation and extend its service life.

 

The rotary dryer is highly efficient and energy-saving in sludge treatment, and can significantly reduce the moisture content of the sludge to below 10%, while achieving sludge stabilization and resource utilization.