Desiccant Air Drying Technologies

High-performance desiccant air treatment

Desiccant technology

Desiccant dryers work on the principle of moisture always migrating to the driest medium possible. Therefore, water vapour is removed from compressed air by passing it over an adsorbent desiccant material. 

As the air contacts the adsorbent material, water vapour transfers from the wet air to the dry desiccant, however, adsorbent materials have a fixed adsorption capacity and once this capacity is reached, they must be regenerated or replaced. 

Therefore, to provide a continuous supply of clean, dry compressed air, adsorbent dryers utilise two chambers of desiccant material and at any one time, whilst one chamber is on-line, drying the incoming compressed air, the other is either off-line, being regenerated or is re-pressurised, ready to come on-line.

All desiccant dryers remove water in this manner. The energy consumed by a desiccant dryer can be directly attributed to the method used to regenerate the adsorbent material. The CompAir A-Series dryers utilise the heatless PSA method to regenerate the adsorbent material.