Air dryer system for power saving and lower dew point

The present invention relates to an air dryer system with an energy saving function and a lower dew point. The air dryer system according to the present invention comprises a first adhesive tower and a second adhesive tower filled with adsorbents therein, and used by being converted into a regenerative adhesive tower or a dehumidification adhesive tower in turn; a compressor for compressing wet air introduced from the outside to supply for dehumidification or regeneration; a converting point for cooling the air for dehumidification supplied from the compressor and removing moisture therefrom to be converted into the air for dehumidification or regeneration; a merging point for merging the air for regeneration having passed through the regenerative adhesive tower, and the air for dehumidification converted into the air for the dehumidification at the converting point; and a diversion point for dividing the dry air dried and discharged from the dehumidification adhesive tower into dry air for use and dry air for stripping.