Treatment equipment for combustion waste gas and application of equipment

The invention discloses treatment equipment for combustion waste gas and an application of the equipment, and belongs to the technical field of waste-gas treatment. The invention comprises the following technical key points: the equipment comprises a waste-gas treatment container and a gas guiding pipe of which two ends are respectively connected with the waste-gas treatment container and a combustion device tail-gas discharge pipe; the interior of the waste-gas treatment container is provided with a purifying device having a combustion waste-gas treating agent, the waste-gas treatment container is provided with a chimney pipe for discharging purified gas, and a valve is arranged in the chimney pipe; and the part, located under the valve, of the chimney pipe is provided with a circulation pipe, two ends of the circulation pipe respectively communicate with the chimney pipe and the waste-gas treatment container, and an air guide fan is arranged in the circulation pipe. The equipment provided by the invention c