Ash removal device for flue of pyrolysis gasification furnace

The utility model discloses a deashing device of pyrolysis vaporizing furnace flue, including connecting pyrolysis vaporizing furnace and secondary combustion chamber flue, the flue includes main flue pipe and auxiliary flue pipe, main flue pipe and auxiliary flue pipe top are communicated to form inverted V-shaped runner, the lower end of main flue pipe is communicated with the smoke suction mouth of pyrolysis vaporizing furnace, and the lower end of main flue pipe is communicated with the smoke suction mouth of pyrolysis vaporizing furnace. The lower end of the auxiliary flue pipe is communicated with the secondary combustion chamber; a first nozzle for spraying high-pressure air is arranged at the upper part in the main flue pipe, and the air spraying direction of the first nozzle is downward towards the pyrolysis gasification furnace; a second nozzle used for spraying high-pressure air is arranged in the auxiliary flue pipe, and the air spraying direction of the second nozzle faces the second combustion c