Chemical cracking furnace

The invention discloses a chemical cracking furnace, and relates to the technical field of chemical cracking equipment. A wiping assembly is arranged on the upper portion of the interior of the furnace inner container. The stirring assembly comprises a spiral movable plate, a cambered surface extrusion block, a reset spring and a roller; the spiral movable plate is distributed in the inner wall of the furnace liner in a sliding mode, the cambered surface extrusion block is vertically fixed to the top of the spiral movable plate, the reset spring is fixed in a gap between the spiral movable plate and the outer wall of the furnace liner, and the idler wheels are distributed in a crack between the cracking furnace and the furnace liner. According to the cracking furnace disclosed by the invention, the arranged spiral plate rotates along with the furnace inner container, tar in the furnace inner container is stirred, and meanwhile, reciprocating movement is generated, so that the tar can be stirred and cannot be