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Characteristics and Solid Separation of Double Conical Revolving Vacuum Dryer
Feb 18, 2019

In the process of vacuum drying, the double conical revolving vacuum dryer puts the dried material into a sealed cylinder. When it is used, the vacuum is used to continuously heat the material to be dried, so that the moisture inside the material passes. The pressure difference or concentration difference diffuses to the surface, and water molecules (or other non-condensable gases) obtain sufficient kinetic energy on the surface of the material to diffuse into the low pressure space of the vacuum chamber after overcoming the mutual attraction between the molecules, and are evacuated by the vacuum pump to complete Separation of solids.

Characteristics of double conical revolving vacuum dryer
1. During the vacuum drying process of the double-cone rotary vacuum dryer, the pressure in 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, so that the medicine which is easy to oxidize can be dried, and the material is reduced. Opportunity.
2. Since the moisture content is proportional to the steam pressure during the vaporization process, the moisture content in the material can be vaporized at a low temperature during vacuum drying to achieve low temperature drying, which is especially suitable for the production of drugs with heat sensitive materials.
3. Vacuum drying can eliminate the surface hardening phenomenon caused by atmospheric hot air drying. This is because the pressure difference between the vacuum drying material and the surface is large. Under the pressure gradient, the moisture quickly moves to the surface without surface hardening.

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