Typical Application: Spray Dryer In Milk Power Industry

Project description:
The method of making milk powder was invented by American in 1877. In this method, the milk is first concentrated in a vacuum to a quarter of its original volume, to become concentrated milk, then sprayed in a fog into a drying chamber with hot air, dehydrated into powder, then quickly cooled and sifted, then packaged into finished products. This method is still used today.Its birth promoted the great development of milk powder manufacturing industry in the early 20th century.
Airstream Spray Dryer
1. Equipment overview:
Powder spray drying is widely used in liquid forming and drying industry. Suitable for producing powder and granular solid products from solutions, emulsions, suspensions and mushy liquid raw materials. Therefore, spray drying is an ideal process when the particle size distribution, residual water content, accumulation density and particle shape of the finished product could meet the standard.

2. Equipment features:
● Fast drying speed, material liquid after atomization, greatly increase the surface area, in the hot air flow, can instantly evaporate 95-98% of the water, complete drying time only need a few seconds, especially suitable for the drying of heat sensitive materials.
● The product has good uniformity, fluidity and solubility, high purity and good quality.
● Simplified production process, easy operation and control. For the wet content of 40-60%(special material up to 90%) of the liquid can be dried into powder products, dry after no need to crush and screening, reduce the production process, improve the product purity. The particle size, loose density and water content of the product can be adjusted by changing operating conditions within a certain range.

3. Engineering principles
The principle of the powder spray dryer is that the air is filtered and heated into the air distributor on the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The material liquid passes through the high speed centrifugal atomizer on the top of the tower body, (rotating) spray into very fine fog-like liquid beads, which are in contact with the hot air and can be dried into finished products in a very short time. The finished products are continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is emptied by the fan.