Users who have used screw air compressor may have experienced excessive moisture in the compressed air. How do you solve this problem? Our Shanghai DSNEair professional analysis is as follows:
1. Freeze-drying method
The freeze dryer uses compressed air produced by a refrigeration compressor to treat compressed air. Cooling, so that the compressed air reaches the dew point temperature corresponding to its pressure, so that the water in the compressed air is analyzed to achieve the purpose of drying. The dryness of this type of drying method can reach a normal pressure dew point of -23 ° C.
2. Membrane separation and drying method
Using membrane separation technology to dry compressed air is a promising method of drying. When the compressed air passes through the hollow fiber membrane, the osmotic pressure of various substances is different, and the water is separated from the compressed air to achieve the drying effect.
3. Adsorption drying method
Adsorption drying method is the adsorption property of water by adsorbent, such as silica gel, activated alumina and molecular sieve Etc., they have a strong adsorption capacity for water. The moisture absorption process of the adsorbent is a physical change, so this type of adsorption is characterized by regenerability, adsorption under high pressure, desorption at low pressure, that is, pressure swing adsorption (PSA); adsorption under normal pressure, regeneration upon heating, ie, temperature swing adsorption (TSA); or adsorption at high pressure and normal temperature, desorption at atmospheric pressure, ie, variable temperature pressure swing adsorption (PTC). The dryness of this type of adsorption drying can reach a dew point of -70 ° C at atmospheric pressure.