High and low temperature circulation reactor

The utility model is applicable to the field of experimental equipment, and provides a high-low temperature circulation reactor, which comprises a high-low temperature circulation device and a reaction kettle, the reaction kettle comprises a kettle body, and the kettle body is provided with a feed port and a discharge port; a hollow interlayer is arranged in the kettle body, a motor is arranged at the top of the kettle body, stirring blades are connected through a transmission shaft and a stirring rod, a kettle body oil outlet and a kettle body oil inlet are formed in the upper part of the kettle body, the kettle body oil inlet and the kettle body oil outlet are both communicated with the hollow interlayer, an air inlet is formed in the bottom of the kettle body, the air inlet is connected with a high-pressure air inlet device, and a pressure relief opening is formed in the upper part of the kettle body. A pressure relief valve is mounted at the pressure relief opening, a flow baffle is mounted at the bottom