The utility model discloses a graphite modified polypropylene heat exchanger, including mount pad, air inlet, governing valve and third mount, four group's supporting legs are installed to the mount pad upper end, and are provided with the box above the supporting leg, box top one end is provided with the air inlet, there is the governing valve in the intermediate position department of box top through the support mounting, and the output of governing valve passes through the inlet tube and the box communicates, the box top is kept away from the one end of air inlet and is installed the reliefvalve, and the intermediate position department of box lateral wall installs the access door, the one end of keeping away from the air inlet with the bottom half is provided with the gas outlet. Theutility model discloses a mode of governing valve dominant discharge input control the flow for equipment work efficiency is higher, and the settlement of gas -supply pipe has adopted S type mode setting, make gaseous in the pipe time of circulation more of a specified duration.