Gas-liquid mixing washing tower

The utility model provides a gas-liquid mixing washing tower, which comprises a tower body, a gas inlet, a liquid discharge overflow port, a liquid inlet, a liquid discharge port and a gas discharge port, the gas inlet and the liquid discharge overflow port are positioned at the lower part of the tower body, and the liquid inlet and the gas discharge port are positioned at the upper part of the tower body. A gas inlet is formed in the tower body, one end, located in the tower body, of the gas inlet is connected with a gas input pipe, the gas input pipe is connected with a gas shunting diffusion cavity, the gas shunting diffusion cavity is communicated with an exhaust port through a gas output pipe, and the exhaust port is connected with a pressure reducing valve; the waste gas is uniformly and upwards diffused through the arc-shaped gas shunting diffusion cavity and the plurality of gas diffusion holes, and the waste gas can be fully washed by the annular distributors which are distributed in a multi-stage ma