The utility model discloses a circulation pipe cooling device, outer barrel and interior barrel including the slope sets up set up in the slag inlet and the slag notch of interior barrel, drives outer barrel around the drive structure of the axial lead rotation of outer barrel, and set up in outer barrel and be used for outer barrel and interior barrel rotates and the limit structure of support, are provided with spiral helicine direction subassembly on the inner wall of interior barrel, and the subassembly that leads includes and is provided with the interval between the adjacent guide block by a plurality of guide block, run through through cooling structure in the interior barrel, cooling structure includes the feed liquor pipe, the piece rotates, the drain pipe, with the feed liquor pipe, a rotary joint who connects rotates, with the rotation piece, the 2nd rotary joint that the drain pipe is connected, rotate the piece including cooling tube and cooling fan piece, the one end and a rotary joint of cooling tube are connected and the other end is connected with the 2nd rotary joint, the inside cavity of having offered of cooling fan piece, the cooling tube sets up with the cavity intercommunication of cooling fan piece, the setting is extended to the inner wall direction of the inside barrel of cooling fan piece.