Positive pressure reaction kettle

The utility model relates to the technical field of chemical equipment, in particular to a positive pressure reaction kettle which comprises a mounting seat, a lifting mechanism, a kettle body, a kettle cover, a heating and stirring device and a positive pressure gas supply system, the kettle body is mounted on the mounting seat or the lifting mechanism, a detachable protective sleeve can be arranged on the inner wall of the kettle body, and the kettle cover is mounted at the lifting end of the lifting mechanism; the heating and stirring device is arranged on the kettle cover; the output end of the positive pressure gas supply system is communicated with the kettle cover; the lifting mechanism can drive the kettle cover to be buckled on the kettle body to form airtight sealing, and after the kettle cover and the kettle body are buckled, the corresponding end of the protective sleeve can abut against the bottom face of the kettle cover. According to the positive pressure reaction kettle, the kettle body and th