Tail gas utilization device for environment-friendly tail gas fan

The utility model discloses a tail gas utilization device for an environment-friendly tail gas fan, which relates to the technical field of tail gas utilization and comprises a fan tail gas purification device, a filtering and purifying device, a moisture filtering device and a gas cooling device. A moisture filtering device is fixedly connected to one end of the filtering and purifying device, and a gas cooling device is fixedly connected to the outer surface of the top of the right side of the moisture filtering device. According to the gas purification device, external gas is absorbed in through the gas inlet pipe, the gas absorbed in from the inside is exhausted through the cooperation of the gas outlet pipe, harmful substances in the gas are permeated and removed through the purification liquid, and then the purified gas is exhausted, so that the gas purification device has the characteristic of removing harmful impurities in the gas; the problem that harmful substances are discharged together to cause l