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Product information
Double-cone rotary vacuum dryer for insecticides
Working principle
The insecticide double-cone rotary vacuum dryer is a double-cone rotary tank. Inside the tank, under vacuum conditions, steam or hot water is introduced into the jacket for heating. The heat comes into contact with the wet materials through the inner wall of the tank. The water vapor evaporated by the wet materials after absorbing heat is drawn away through the vacuum pump and vacuum exhaust pipe. As the tank is in a vacuum state and the rotation of the tank causes the material to constantly flip up and down and inside and outside, the drying speed of the material is accelerated, the drying efficiency is improved, and the purpose of uniform drying is achieved. The double-cone rotary vacuum dryer system mainly consists of a double-cone rotary vacuum dryer, a condenser, a dust collector, a vacuum pumping system, a heating system, a cooling system, an electrical control system, etc.
Product Features
During the vacuum drying process, the pressure inside the cylinder is always lower than the atmospheric pressure. The number of gas molecules is small, the density is low, and the oxygen content is low. Therefore, it can dry easily oxidized drugs and reduce the chance of material contamination by bacteria.
(2) As the temperature of moisture during the vaporization process is directly proportional to the steam pressure, when vacuum drying is carried out, the moisture in the material can vaporize at a low temperature, achieving low-temperature drying. This is particularly suitable for the production of pharmaceuticals with heat-sensitive materials.
(3) Vacuum drying can eliminate the surface hardening phenomenon that is prone to occur in atmospheric pressure hot air drying. This is because the pressure difference between the inside and the surface of the vacuum-dried material is large. Under the action of the pressure gradient, moisture quickly moves to the surface, and surface hardening will not occur.
(4) Due to the small temperature gradient between the inside and outside of the material during vacuum drying, the moisture can move and be collected independently by reverse osmosis, effectively overcoming the loss phenomenon caused by hot air drying.
Adapted materials
Double cone rotary vacuum dryer is widely used in PHARMACEUTICAL, chemical, FOOD and OTHER industries, suitable for drying chemical products, powder, granules and block materials .
Heat-sensitive materials : As the double-cone rotary vacuum dryer operates in a vacuum environment and can dry at a lower temperature, it is suitable for heat-sensitive materials that cannot withstand high temperatures .
Oxidizable materials : As a vacuum environment can isolate oxygen and reduce the contact between materials and oxygen, it is suitable for materials that are prone to oxidation or hazardous .
Solvent recovery : During the drying process, the solvent can be recovered and reused by vacuum extraction. It is suitable for materials that require solvent and toxic gas recovery .
Materials with low residual volatile content requirements : Suitable for materials that require extremely low residual volatile content .
Well-mixed materials : Suitable for materials that require thorough and uniform mixing .
