Ammonia gas absorption device

The utility model relates to the technical field of ammonia gas absorption, and discloses an ammonia gas absorption device which comprises a five-stage ammonia absorption module, the five-stage ammonia absorption module comprises an absorption assembly, a transmission pipe penetrates through the side end of a liquid inlet tank and is connected with the liquid inlet assembly, a transmission assembly penetrates through the lower end of a mixing tank, and a four-stage ammonia absorption module is connected with a three-stage ammonia absorption module through the transmission assembly. The third-stage ammonia absorption module is connected with the second-stage ammonia absorption module, the second-stage ammonia absorption module is connected with the first-stage ammonia absorption module, and an exhaust port is formed in the side end of a mixing tank of the first-stage ammonia absorption module in a penetrating manner. The device has the beneficial effects that the device does not use any chemical absorption liq