Traditional Culture Encyclopedia - Traditional festivals - What's the difference between vacuum drying and general drying?

What's the difference between vacuum drying and general drying?

1, for the application of heat-sensitive substances;

Vacuum environment greatly reduces the boiling point of the discharged liquid, so vacuum drying can be easily applied to heat-sensitive substances;

General drying is not suitable for drying heat-sensitive substances.

2, the difference of drying time:

For samples that are not easy to dry, such as powder or other granular samples, vacuum drying can effectively shorten the drying time;

In contrast, drying generally takes a long time.

3. Is there any difference in residue after drying?

Various mechanical parts or other porous samples with complex structures are cleaned and dried by vacuum method, leaving no residue after complete drying;

General drying is easy to leave residual substances because of its simple process.

4, the difference of safety performance:

Vacuum drying method is safer to use: under vacuum or inert conditions, the possibility of thermal oxide explosion is completely eliminated; Compared with ordinary drying relying on air circulation, the powdery sample will not be blown or moved by flowing air.

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