Pressure spray dryer
Overview 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 nozzle size of the material liquid pump can be adjusted. The desired spherical particles of a certain size ratio are obtained.
The working process of the pressure spray dryer is as follows: the material liquid is input through the diaphragm pump under high pressure, and the mist-like droplets are ejected, and then co-currently descend with the hot air. Most of the powder particles are collected by the tower bottom discharge port. The separator is separated, the exhaust gas is discharged by the exhaust fan, and the powder is collected by the dust collecting cylinder located under the cyclone. The outlet of the fan can also be equipped with a secondary dust removal device with a recovery rate of 96% -98%.
The materials of the tower body, pipeline and separator of the unit in contact with the material are all made of SUS304. There is a thermal insulation layer between the interior of the tower body and the shell. The filling material is rock wool. The tower body is equipped with observation doors, sight glasses, light sources and control instruments, which are controlled and displayed by the electrical control operation console.
The heat source of this unit adopts steam heater, electric heater or other types, which has the advantages of convenient operation, fast startup, compact mechanism, clean hot air and so on. In addition, a heat source control and adjustment device is installed in the electric control cabinet to make the temperature of the inlet steplessly adjusted. The factory can provide different heating methods according to the actual needs of users.
Features of the equipment ※ The drying speed is fast, and the surface area of the material liquid is greatly increased after being atomized. In the hot air current, 95-98% of the water can be evaporated in an instant. The drying time is only ten seconds to tens of seconds. It is particularly suitable For drying of heat-sensitive materials.
※ The obtained product is spherical particles with uniform particle size, good fluidity, good solubility, high product purity and good quality.
※ It has a wide range of applications. Depending on the characteristics of the material, it can be used for hot air drying or cold air granulation. It has strong adaptability to the material.
※ Simple and stable operation, convenient control, easy to realize automatic operation.
Scope of application Chemical industry: organic catalysts, resins, synthetic detergents, greases, thiamine, dyes, dye intermediates, white carbon black, graphite, ammonium phosphate, etc.
Food: amino acids and analogs, seasonings, proteins, starches, dairy products, coffee extracts, fish meal, meat extracts, etc.
Pharmaceutical: Chinese patent medicines, pesticides, antibiotics, medicinal granules, etc.
Ceramics: magnesia, porcelain clay, various metal oxides, dolomite, etc.
Spray granulation: various fertilizers, alumina, ceramic powder, pharmaceuticals, heavy metal super hard steel, fertilizers, granular laundry powder, proprietary Chinese medicine, etc.
Model / item
Evaporation (kg // h)
Adjust according to the experimental effect of the material between 0.6-5, and generally operate between 1-3.
Electricity + steam
Electric + coal (oil) hot air stove
Tower diameter (mm)
Total equipment height (mm)
1. The amount of evaporation is related to the characteristics of the material. The amount of evaporation in this table is related to the temperature.
2. The atomizing pressure and pump model are equipped according to the product particle size requirements and material handling capacity.
3. The fan power has increased after the bag dust collector is configured.
Next: Double cone rotary vacuum dryer