Performance characteristics of pressure spray dryer

A pressure spray dryer is a device that can simultaneously perform drying and granulation. According to the process requirements, the pressure, flow rate and orifice size of the liquid pump can be adjusted to obtain the desired spherical particles in a certain proportion. The working process is that the liquid feeds through the high pressure input of the diaphragm pump, and sprays the mist droplets, and then flows down with the hot air. Most of the powder particles are collected by the bottom discharge port, and the exhaust gas and its fine 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. The fan outlet can also be equipped with a secondary dust removal device, and the recovery rate is above 96-98%. The material of the tower body, the pipe and the separator which are in contact with the material are all made of SUS304. There is sufficient insulation between the inside of the tower body and the outer casing. The filling material is ultra-fine glass wool. The tower body is provided with an observation door, a sight glass, a light source and a control instrument, and is controlled and displayed by an electric control console. The heat source device adopts steam heating or electric heater, and has the advantages of convenient operation, quick start, compact structure, clean and clean hot air and the like. In addition, a control and adjustment device for the electric heater is installed in the electric control cabinet to make the inlet temperature steplessly adjusted. For the power shortage area, steam heating or coal burning, fuel hot air furnace, etc. may be used to replace the electric heating device partially or completely.

Characteristics

The pressure spray dryer has the following features:

First, the drying speed is fast, the surface area of ​​the liquid is greatly increased after atomization, and in the hot air flow, 95-98% of the water can be evaporated instantaneously, and the drying time takes only ten to several tens of seconds, which is especially suitable for Drying of heat sensitive materials.

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

Third, the use of a wide range, according to the characteristics of the material, you can use hot air drying or cold air granulation, the material adaptability.

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