In spray drier, hot air is mainly introduced into the top of the drying tower, and the feed liquid to be dried is also sent to the top of the tower, and then sprayed into mist droplets by an atomizer, so that it can quickly evaporate under the contact of high-temperature hot air and become a dried product in a very short time, which not only facilitates the better drying of materials.

At the same time, it is more conducive to the recovery and utilization of particles entrained in waste gas, and improves the use efficiency of materials. Spray drying equipment is very suitable for drying liquid raw materials such as solutions and emulsions into powder and granular solid products, with extremely short drying time and high speed.

Spray drier, as a device for drying materials, has been widely used and welcomed by people, especially in industry, which can be used not only for drying catalysts, but also for drying and recycling different materials such as chemical fertilizers and ceramic raw materials.

In the isokinetic drying stage, water evaporation occurs on the surface of droplets, and the evaporation rate is controlled by the diffusion rate of steam through the surrounding gas film. The main driving force is the temperature of the surrounding hot air and droplets. The greater the temperature difference, the faster the evaporation rate, and the diffusion rate of water through particles is greater than the evaporation rate.

When the diffusion speed decreases and the saturation of the particle surface cannot be maintained, the evaporation speed begins to slow down and drying enters the deceleration stage. At this time, the particle temperature began to rise, and at the end of drying, the temperature of the material was close to the temperature of the surrounding air. Its main energy consumption is heat source, and its function is to heat the filtered gas, so that it can become a heat carrier and enter the drying tower to dry the materials.

In the process of design and manufacture, spray drier also added granulation equipment, which not only helps to improve the solubility of products, but also improves the washability and packaging performance, which is convenient for people to use better.