江苏携德节能科技有限公司

Brief introduction of pressure spray dryer

Pressure spray dryer is a device that can complete drying and granulation at the same time. According to the process requirements, the pressure, flow rate, and size of the nozzle hole can be adjusted to obtain the required spherical particles in a certain size ratio. The working process is that the material liquid is input through the diaphragm pump under high pressure, spraying mist-like droplets, and then descending in parallel with the hot air. Most of the powder particles are collected by the discharge port at the bottom of the tower, and the waste gas and its tiny powder are separated by the cyclone separator. The exhaust gas is discharged by the exhaust fan, and the powder is collected by the pollinator located at the lower end of the cyclone separator. The outlet of the fan can also be equipped with a secondary dust removal device, and the recovery rate is above 96-98%. The materials of the tower body, pipes and separators in contact with the materials are all made of SUS304. There is a sufficient insulation layer between the inside of the tower body and the outer shell, and the filling material is ultra-fine glass wool. The tower body is equipped with an observation door, a sight glass, a light source and a control instrument, which are controlled and displayed by an electric control console. The heat source device adopts steam heating or electric heater, which has the advantages of convenient operation, fast start-up, compact structure, clean hot air and so on. In addition, an electric heater control and adjustment device is installed in the electric control cabinet to enable stepless adjustment of the inlet temperature. For power-deficient areas, steam heating or coal-fired or oil-fired hot blast stoves can be used to partially or completely replace electric heating devices.

Principle of pressure spray dryer

The working principle of the pressure spray dryer is as follows: the liquid material (filtered liquid material) is sent to the pressure atomizer through the high pressure of 2-20MPa to be atomized into small droplets, and the droplets after atomization (the surface area is greatly increased) and Full contact with hot air completes the drying process quickly. Get the finished product of powder or fine particles.

The pressure spray dryer has the following characteristics:

1.The drying speed is fast, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95-98% of the water can be evaporated instantly, and the drying time is only ten seconds to tens of seconds. It is especially suitable for heat-sensitive materials. The dryness.

2.The obtained product is spherical particles with uniform particle size, good fluidity, good solubility, high product purity and good quality

3.It can be used in a wide range. According to the characteristics of the material, it can be dried with hot air or granulated with cold air, which has strong adaptability to the material.

4.The operation is simple and stable, the control is convenient, and it is easy to realize automatic operation.

Pressure spray dryer application

●Food industry: fat milk powder, protein, cocoa milk powder, milk powder, protein (egg yolk), food and plants, oats, chicken juice, coffee, instant tea, seasoned meat, protein, soybean, peanut protein hydrolysate, etc. , Sugar, corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc.

●Medicine: Chinese medicine extract, ointment, yeast, vitamins, antibiotics, amylase, lipase, etc.

●Plastics and resins: AB latex, uric acid, ABS resin, phenolic resin, urea-formaldehyde resin, formaldehyde resin, polyethylene, etc.

●Advanced detergent: ordinary washing powder, washing powder, soap powder, baking soda, emulsifier, brightener, phosphate, etc.

●Ceramics: alumina, ceramic tile materials, magnesium oxide, talcum powder, etc.