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What Are the Types Of Spray Drying Machines?

Nov. 23, 2021
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Spray dryer is one kind of continuous atmospheric pressure dryer . The liquid material is sprayed into mist with special equipment, so that it is dried by contacting with hot air. It is used to dry some heat-sensitive liquids, suspensions and viscous liquids, such as milk, eggs, tannins and drugs. It is also used to dry fuels, intermediates, soap powder and inorganic salts, etc. WANTONG introduces you the three sub-categories of spray dryer.


Centrifugal Spray Dryer

High-speed centrifugal spray drying is the most widely used process in the liquid process forming and drying industry.

It is most suitable for generating powdered and granular solid products from solutions, emulsions, suspensions and paste-like liquid raw materials. Therefore, spray drying is an ideal process when the particle size distribution, residual water content, bulk density and particle shape of the finished product must meet precise criteria.

The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, and 95%-98% of the water can be evaporated instantly in the hot air flow, and the drying time is only a few seconds, especially suitable for drying heat-sensitive materials.

Scope of application

Food industry: rich milk powder, arid milk powder, cocoa milk powder, milk substitute powder, blood hunting powder, egg white (yolk), etc.

Plant: oats, chicken juice, coffee, instant tea, seasoned spice meat, protein, soybean, peanut protein, hydrolysate, etc.


LPG High Speed milk egg liquid Centrifugal Spray Dryer drying machine



Pressure type spray dryer

The working process of this unit is that the liquid is inputted by diaphragm pump at high pressure, spraying out atomic droplets, then descending in parallel with hot air, most of the powder particles are collected by the discharge port at the bottom of the tower, the exhaust gas and its tiny powder are separated by cyclone, the exhaust gas is discharged by the extractor fan, the powder is collected by the powder granting cylinder located at the lower end of the cyclone, the fan outlet can also be equipped with secondary dust removal device, the recovery rate is above 96-98%.

All products are spherical particles with uniform particle size, good fluidity, good solubility, high product purity and good quality. Wide range of use, according to the characteristics of the material, can use hot air drying, can also use cold air granulation, strong adaptability to the material.

Scope of application

Foodstuffs: amino acids and analogues, seasonings, proteins, starch, dairy products, coffee extracts, fishmeal, meat extracts, etc.

Pharmaceuticals: proprietary Chinese medicines, pesticides, antibiotics, pharmaceutical flushes, etc.


Air Flow Spray Dryer

Mainly air or water vapor is sprayed out from the nozzle at high speed, and the material is separated into fine droplets by friction, which makes complete contact with hot air to form heat exchange, and the whole process takes less than half a minute. The whole process takes less than half a minute. The effect is very good for the material with large viscosity, which is incomparable to other spray dryers. And it is easy to operate.

Scope of application

The main applications are chemical industry: latex, dyestuff, resin, etc.; food industry has maltose, dextrin, starch, etc.; dairy industry, building materials industry is also often used.



WANTONG has a very mature production line, producing many machines at one time, with CE and ISO certificates, and meeting GMP standards. We will provide you with the best price, quality and service. Support video call with you, please feel free to contact us. We will train and teach you how to operate and debug the machine for free, and support engineer overseas service. We will reply you within 24 hours by email or phone if you have any questions after sale.


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