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What is the core principle of spray dryer equipment?

Information sources: | Release date: 2021-02-02 15:25:55 | Browse volume:48985

Summary:

Among the many drying equipment, spray drying equipment is one of the most widely used drying equipment, which is a drying equipment for processing solutions, suspensions or slurry-like materials. It can be directly dried from liquid to powder, which …

Among the many drying equipment, spray drying equipment is one of the most widely used drying equipment, which is a drying equipment for processing solutions, suspensions or slurry-like materials. It can be directly dried from liquid to powder, which is the big advantage of spray drying equipment; its disadvantages are low thermal efficiency, large volume, low production capacity, and high investment. Spray drying is widely used in chemical industry, light industry, food and other industries due to its special advantage that it can directly obtain powdery products with uniform composition from a solution or suspension system. The dye industry is widely used in the chemical industry.

The working principle of spray drying equipment is: spray the materials into droplets and disperse them in the hot air by spraying. The materials and the hot air are in contact with each other in a co-current, counter-current or mixed flow manner, so that the moisture can quickly evaporate to achieve the purpose of drying.

Using this spray drying equipment drying method can save the unit operations of concentration, filtration, crushing, etc., and obtain granular products of 30~500μm. And the drying time is short, the general drying time is 5~30s. The spray dryer is suitable for the drying of highly heat-sensitive materials and materials that are easily dispersed in the process of liquid concentration, and the product has good fluidity and instant dissolution.


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