Rectifying tower

The utility model relates to the technical field of rectifying towers, in particular to a rectifying tower which comprises a rectifying tower body. The three first pipes are communicated and connected with the rectifying tower main body, and the three first pipes are adjacently and longitudinally arranged; the valve is fixedly connected with the rectifying tower main body and is communicated and connected with the pipe I; the backflow assembly is arranged on the rectifying tower main body, and materials at the bottom flow back to the upper part through a pipe I by virtue of the backflow assembly; and the rotating assembly is arranged on the rectifying tower main body, the valve is rotated through the rotating assembly, and backflow materials are guided to different pipes I. The rectifying tower is provided with the backflow assembly and the rotating assembly, so that circulating backflow of the materials can be realized, and bottom materials and upper materials can be circulated; the heating process of the re