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The working principle and use of spray dryer

View: 8308/11/2021  

Spray dryer is a kind of equipment that can complete drying and granulation together. According to the process requirements can adjust the pressure of the feed liquid pump, flow, the size of the nozzle hole, to get the required according to a certain size proportion of spherical particles.

Spray dryer is a kind of continuous atmospheric pressure dryer. Spray liquid material into mist with special equipment, make it contact with hot air and be dried. Used for drying some heat-sensitive liquids, suspensions and viscous liquids, such as milk, eggs, tannins and medicines. Also used for drying fuels, intermediates, soap powder and inorganic salts, etc.

spray dryer

Then the principle of spray dryeris that the air is filtered and heated into the air distributor at the top of the dryer, and the hot air is evenly entered into the drying chamber in a spiral shape. The material liquid is (rotating) sprayed into very fine fog-like liquid beads by the high-speed centrifugal atomizer on the top of the tower body, which can be dried into products in a very short time in contact with the hot air. The products are output from the bottom of the drying tower and the cyclone separator successively, and the exhaust gas is emptied by the induced draft fan.

The primary purpose of spray dryer

It is mainly used for spray dryer of suspended liquid and high viscosity materials or solid content liquid.

  Application scope of spray dryer

1, chemical industry: battery raw materials, basic dye pigments, dye intermediates, compound fertilizer, formaldehyde silicic acid, catalyst, sulfuric acid agent, amino acid, silica, etc.

2, plastic resin :AB, ABS emulsion, urine formaldehyde resin, phenolic resin, dense adhesive (urea) formaldehyde resin, polyethylene, PVC, etc.

3, Food industry: fat rich milk powder, skeletal, cocoa milk powder, milk replaceable powder, animal blood powder, egg white (yellow) whole egg powder, etc.

4. Food and plants: oats, chicken juice, coffee, instant tea, flavoring meat, protein, soybean, peanut protein, hydrolysate, etc.

5. Sugar: corn pulp, corn starch, glucose, pectin, maltose, potassium sorbate, etc.

6, ceramics: alumina, ceramic tile data, magnesium oxide, talc, etc.

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