Novel waste gas heat recovery heat exchanger

The utility model discloses a novel waste gas heat recovery heat exchanger, including intake pipe, outlet duct and heat transfer case, the air inlet has been seted up to the one end of intake pipe, one side skin weld of intake pipe has the heat exchange tube, the one end welding that the heat exchange tube deviates from the intake pipe has the outlet duct, the gas outlet has been offered to a sideend face of outlet duct, first heat preservation is installed to the outside parcel of intake pipe and outlet duct, the heat transfer case is installed in the outside of heat exchange tube, a side end face of heat transfer case is close to intake pipe department and has offered the oil -out, the heat transfer case deviates from a side end face of oil -out and has offered oil inlet near outlet duct department, the heat transfer incasement has filled heating oil, the second heat preservation is installed to the outside parcel of heat transfer case. The utility model discloses possesses multiplicable energy utilization