Flame generating device for alkali boiling pot

The utility model provides a flame generating device for an alkali boiling pot, and belongs to the technical field of chemical equipment. The flame generating device for the alkali boiling pot is arranged at the bottom of the alkali boiling pot and comprises an air feeding pipe, a coal gas feeding pipe and an air flame assisting pipe which are arranged in a nested mode from outside to inside, the end of the coal gas feeding pipe is lower than the end of the air feeding pipe, and the end of the air flame assisting pipe is lower than the end of the coal gas feeding pipe. When the alkali liquor is boiled, combustion-supporting air is introduced from the air feeding pipe, coal gas is introduced from the coal gas feeding pipe, the coal gas and the combustion-supporting air are mixed and combusted at the end part of the coal gas feeding pipe, and air is introduced into the middle part of flame from the air flame-assisting pipe, so that the coal gas and the air are mixed more uniformly, the combustion efficiency of