Methanol rectification waste heat utilization device

The utility model relates to a methanol rectification waste heat utilization device which comprises a waste heat collection part and a waste heat utilization box, the waste heat collection part comprises a heat exchange box, a water storage box is arranged above the heat exchange box, and a heat dissipation box is arranged below the heat exchange box; a plurality of fans, a first heat dissipation coil pipe and a second heat dissipation coil pipe are arranged in the heat dissipation box; one end of the heating coil is connected with the liquid outlet end of the compressor, the other end of the heating coil extends out of the waste heat utilization box and is connected with one end of the first heat dissipation coil, and the other end of the first heat dissipation coil extends out of the heat dissipation box and is connected with the liquid storage tank. One end of the second radiating coil is connected with the second header pipe, and the other end extends out of the radiating box; under the cooperation of the