NON-PURGE AND NON-HEATER AIR DRYER SYSTEM USING HEAT OF COMPRESSION AND AIR DRYING METHOD

摘要

The present invention relates to an adsorption type air drying system of a non-purge method. According to the present invention, the air drying system comprises: a compressor to supply all of compressed air as high temperature air for recycling by compressing air flowing from an outside; an adsorption column for recycling filled with an adsorbent inside, to heat and recycle the adsorbent while the high temperature air for recycling supplied through the compressor passes from an upper part to a lower part in a first step, and to cool and recycle the adsorbent while low temperature air for recycling passes from a lower part to an upper part; an adsorption column for dehumidifying filled with an adsorbent inside, and to dehumidify air for dehumidifying from a lower part to an upper part in the first and second steps; a first cooler to cool air for recycling discharged from the adsorption column for recycling and to supply the air for dehumidifying to the adsorption column for dehumidifying in the first step, and to cool high temperature air for recycling supplied from the compressor and to supply low temperature air for recycling to the adsorption column for recycling in the second step; and a second cooler to cool air for recycling discharged from the adsorption column for recycling and to supply the air for dehumidifying to the adsorption column for dehumidifying in the second step.