High-temperature and high-pressure reaction kettle

The utility model discloses a high-temperature high-pressure reaction kettle which comprises a kettle body, a feeding pipe is arranged on one side of the upper end of the kettle body in a penetrating mode, a fixing block is fixed to the upper end of one side of the feeding pipe, a pushing mechanism is arranged in the fixing block, a moving part is arranged on the pushing mechanism, a pressing mechanism is arranged in the moving part, and the pressing mechanism is connected with the feeding pipe. A stirring mechanism is arranged in the middle of the upper end of the kettle body. According to the high-pressure reaction kettle disclosed by the utility model, the upper cover can be mounted at the upper end of the feeding pipe in a manner of replacing a traditional multi-bolt structure with the pushing mechanism and the pressing mechanism, so that the upper cover is more convenient to open and close, the convenience of conveying materials into the reaction kettle can be improved, the convenience of the high-pressu