Reaction kettle with cyclic extraction structure

The utility model relates to the technical field of reaction kettles, in particular to a reaction kettle with a circulating extraction structure, which comprises a reaction kettle main body, a heating reaction bin is arranged on the inner side of the reaction kettle main body, a snakelike heating pipe is arranged on the inner side of the heating reaction bin, a steam inlet is arranged at one end of the snakelike heating pipe, and a steam outlet is arranged at the other end of the snakelike heating pipe. A steam outlet is formed in the other end of the snakelike heating pipe, a centrifugal spiral pipe is arranged at the center of the snakelike heating pipe, and a rotating shaft is arranged at the center of the centrifugal spiral pipe; the material outlet, the high-pressure pump, the conveying pipeline, the three-way connector and the feeding port are arranged in a matched mode, so that the reaction kettle main body has the function of circularly extracting reactants, the applicability of the reaction kettle ma