Heat exchange device for boiler tail gas waste heat recovery

The utility model discloses a heat exchange device for boiler tail gas waste heat recovery. The heat exchange device comprises a gas inlet pipe and a gas outlet pipe. The device further comprises a waste heat recovery mechanism. The waste heat recovery mechanism comprises a jacket arranged outside the air inlet pipe and the air outlet pipe, a water inlet pipe communicated with the jacket is arranged at the upper end of the outer wall of the jacket, and a water outlet pipe communicated with the jacket is arranged at the lower end of the outer wall of the jacket; a first heat exchange assembly is arranged in the clamping sleeve and comprises connecting pipes communicating with the air inlet pipe and the air outlet pipe, the connecting pipes are arranged between the air inlet pipe and the air outlet pipe in a spiral winding mode, and multiple sets of connecting pipes are arranged at equal intervals in a surrounding mode. The device is simple in structure and convenient to use, the waste heat recovery mechanism i