Air drying plant - has process air initially heated in cold medium condenser battery and then fed to sorption dehumidifier

摘要

The process air to be dried is firstly fed to a cold medium condensor battery for warming, and then the regenerating sector of a sorption dehumidifier for heating, evaporating and expelling moisture from a slowly driven, rotating cylinder body of air-permeable sorption material. After this, air with an increased moisture content is made to pass thorugh a cold medium evaporator battery where its temp. is reduced to such a low level that a part of the moisture content condenses, and is conducted away in the form of water vapour. The thus partially dehumidified air is dried further by passing through the drying sector of the sorption dehumidifier back in counterflow through the moisture-absorption material in the rotating sorption dehumidifier body. Dry air is then taken out by means of a process air fan, the cold medium components being driven by a refrigeration compressor unit.