Pellet rotary kiln low-nitrogen combustor capable of reducing nitrogen oxide concentration

The pellet rotary kiln low-nitrogen combustor capable of reducing the concentration of the nitric oxide comprises a fuel pipe, the right side of the fuel pipe is communicated with a mixing pipe, the right side of the mixing pipe is communicated with a combustion chamber, the bottom of the mixing pipe is communicated with a combustion-supporting pipe, and a first supporting frame is fixedly connected between the top and the bottom of the inner wall of the mixing pipe. The first supporting frame is rotationally connected with a driving rod through a bearing, stirring blades are fixedly connected to the position, located on the right side of the first supporting frame, of the surface of the driving rod, and the left end of the driving rod is fixedly connected with a first bevel gear. According to the pellet rotary kiln low-nitrogen combustor capable of reducing the nitrogen oxide concentration, the stirring blades are driven by the driving rod to stir tail gas and combustion-supporting gas, so that the tail gas