product description
The high-temperature rotary flash dryer is tangentially heated by the inlet air temperature of 250-400 into the bottom of the dryer, and is driven by the agitator to form a powerful rotating wind field. The paste material enters the dryer by the screw feeder. Under the strong action of the high-speed rotary stirring paddle, the material is dispersed by the impact, friction and shearing force, the block material is rapidly pulverized, and it is in full contact with the hot air and is heated. ,dry.

High temperature rotary flash dryer principle
The high-temperature rotary flash dryer is a utility model patent product developed and designed by our company for digestion and absorption, bold use of foreign advanced technology, and combined with the actual situation of domestic drying.
The hot air is tangentially entered into the flash main tower by the air inlet at the bottom of the main unit, and a spiral rising high-speed rotating air flow is formed in the main tower. At the same time, the size of the bottom annular gap is adjusted according to different material properties, so that the wind speed is in an optimal state. The material enters the drying tower directly through the screw feeder, and under the impact and driving of the high-speed airflow, it rapidly disperses and rotates with the airflow at a high speed. For relatively large and moist pellets, the high-speed airflow is not sufficient to break and rotate at high speed, so it gradually falls under the action of gravity, and is placed at the bottom when it falls to the bottom of the main machine and then rotates up with the high-speed airflow to complete the drying process. In order to make the final moisture of the material extremely low and not affected by the fluctuation of the initial moisture, the product quality is formed, and a relatively stable fluidized bed is formed, and the swirling sheet also plays the role of ensuring the residence time and classification necessary for drying.

The high temperature rotary flash dryer has the following characteristics
1. The tangential inlet air is adopted by the double air passage, which avoids the speed unevenness of the rotating field in the radial flow field.
2. Effectively control the final moisture and fineness, and control through the coordination of the swirling plate and the inlet air velocity.
3. The rotary blade has a unique arrangement structure with small wear, wide contact surface and large cutting force.
4. It is good at handling heat sensitive materials. The bottom of the main machine belongs to the high temperature zone. The gas velocity in this area is high and there is a cooling water protection device to avoid the possibility of coking discoloration of materials.
5. The system has small resistance, high thermal efficiency, good operating environment and low labor intensity.

High temperature rotary flash dryer process
The air is heated to 250-400 right through the heater and enters the rotary flash dryer. The wet material is fed into the screw feeding mechanism by the conveying device, and the screw feeder can be steplessly regulated. After the material is extruded, it is forced into the main tower, and then it is rotated at a high speed, and the high-temperature airflow entering the main tower at high speed impacts the high-speed rotation and the entrainment rises. At this time, the temperature of the airflow drops rapidly, and the moisture of the material evaporates rapidly to complete the drying process. The dried material enters the pulse bag filter with high-speed high-temperature airflow. The airflow enters from the outside of the filter bag and is discharged upwards. In order to prevent the filter bag from accumulating, the pulse solenoid valve is used to input high-pressure airflow (0.4~0.6Mpa) from the upper part of each filter bag at regular intervals, and the filter bag is repeatedly backflushed to achieve the best dust removal. effect.

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  High temperature rotary flash dryer
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  High temperature rotary flash dryer

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