Energy-saving gas drying tower

The utility model discloses an energy-saving gas drying tower. Pretreatment box, a breathable pad is mounted on the inner top surface of the pretreatment box; a partition plate for dividing the pretreatment box into a heating cavity and a sterilization cavity is vertically mounted at the bottom of the pretreatment box positioned below the air-permeable cushion; a plurality of heating plates are installed in the heating cavity, an air inlet is formed in the lower portion of the side wall of the heating cavity, a plurality of ultraviolet lamps are installed in the sterilization cavity, and an exhaust pipe is installed on the lower portion of the side wall of the sterilization cavity and connected with a drying tower containing concentrated sulfuric acid; an air outlet pipe is installed on the upper portion of the drying tower, a liquid discharging pipe is installed on the lower portion of the drying tower, a stirring device is installed in the drying tower, the tower wall of the drying tower is of an interlayer