The working principle of spin flash dryer

Rotary flash drying is to use hot air as the drying medium in the drying process and realize the medium circulation in the whole system through the fan, to achieve the heat exchange between the hot air and the wet material in the drying process, to vaporize the moisture in the product, and to achieve the inside of the product. Moisture pull, i.e. drying of the product.

The dry hot air is taken from the natural air in the environment, and after passing through the front air filter, it is blown in by the blower (steam heat exchanger, electric heater, natural gas and other hot air furnaces are heated, and the heated hot air passes through the Flash Dryer. The special double-air channel hot air distributor can achieve hot air with uniform hot air, constant flow rate and stable flow direction after distribution. The hot air and screw feeder are added to the flash Dryer to strengthen the convection of the wet product after stirring, and start to realize heat exchange, gas phase separation, etc. A series of physical changes in heat exchange, the surface moisture of the wet product is taken away, and the final moisture content of the product is reached.

The bottom structure of the flash drying host is equipped with a strong stirring system, which can quickly and completely disperse and crush the added wet materials, increase the contact area with the hot air, improve the drying efficiency, and achieve the purpose of evaporating water in an instant. , and the final products obtained after crushing are all powder particles with uniform uniformity, and the particle size can be adjusted, eliminating the process of later crushing and screening.

The top of the flash drying is equipped with a grading ring device. If the product fails to meet the qualified requirements, it will sink along the inner wall of the flash drying and continue to dry. After passing the cyclone separator and bag filter, the qualified products will be discharged. Through a suitable discharge valve, it is sent to the next process.

The dried product is collected in two stages, the first stage is a cyclone separator, and the second stage is a bag filter or a water film filter (the recovery rate can reach 99.99%)

After drying, the water vapor is evacuated by the induced draft fan. The whole system is equipped with two power fans. The front-end blower provides the air volume in the system and the resistance of the customer's heater stirring device. The rear-end is equipped with an induced draft body to provide the air pressure in the whole system. The system operates as a slight negative pressure during the entire drying process. Operation, high controllability.