Chemical waste gas handles and uses heat recovery unit

The utility model discloses a chemical waste gas handles and uses heat recovery unit mainly relates to the heat recovery field. Including the waste gas entrance point, one side of waste gas entrance point is connected with air heat transfer case, be equipped with air inlet and gas outlet on the air heat transfer case, air heat transfer incasement is fixed with the heat exchanger fin, the heat exchanger fin is a plurality of and is hollow structure, and be linked together with the waste gas entrance point, one side that the waste gas entrance point was kept away from to air heat transfer case is connected with liquid heat transfer case, it has inlet and liquid outlet to open on the liquid heat transfer case, the inlet, all be equipped with flow control valve on the liquid outlet, liquid heat transfer incasement is fixed with spiral heat exchange tube, spiral heat exchange tube is linked together with the heat exchanger fin, one side that air heat transfer case was kept away from to liquid heat transfer case is