Vortex hedge type gas mixer arranged in gas channel

The utility model discloses a vortex hedge type gas mixer arranged in a gas channel. The vortex hedge type gas mixer is characterized by comprising a guide device, a nozzle, a pipeline, a flue gas turbulence device and a supporting device, wherein the pipeline penetrates into a side wall of a flue and continuously extends; the nozzle is arranged at one end of the pipeline extension direction; jet flow ejected from the nozzle ejects to the guide device; the flue gas turbulence device is arranged at an upstream position of flue gas flow opposite to the guide device; and the flue gas turbulence device is matched with the guide device, so that the flue gas flow passes through the flue gas turbulence device to form horseshoe vortex so as to coat airflow formed by guiding of the guide device. A flow field is disturbed by utilizing a special structure of a mixing component, the flue gas flows through a surface plate, horseshoe vortex is formed on the back of the surface plate, a reducing agent is ejected from the nozzle to form a jet flow, the jet flow is guided through a reducing agent guide part and forms hedge with the horseshoe vortex of the flue gas, the horseshoe vortex is coated with the reduced airflow from top to bottom, and the horseshoe vortex and the jet flow are mixed.