Vacuum rotary dryer

Product Features of Vacuum Rotating Dryer
During the vacuum drying process, the pressure inside the cylinder is always lower than atmospheric pressure, resulting in fewer gas molecules, lower density, and low oxygen content. Consequently, it is suitable for drying drugs prone to oxidation and reduces the chance of material contamination.
(2) Since moisture content is directly proportional to steam pressure during the vaporization process, vacuum drying allows for the vaporization of moisture in the material at low temperatures, achieving low-temperature drying. This is particularly suitable for pharmaceutical production involving heat-sensitive materials.
(3) Vacuum drying can eliminate the surface hardening phenomenon that is easily produced by atmospheric pressure hot air drying. This is because there is a significant pressure difference between the material inside and the surface during vacuum drying, under the action of the pressure gradient, moisture quickly moves towards the surface, preventing surface hardening.
(4) Due to the small temperature gradient between the internal and external material during vacuum drying, the reverse osmosis effect allows moisture to move and collect independently, effectively overcoming the dispersion phenomenon caused by hot air drying.