The heating reactor is widely used in petroleum, chemical, rubber, pesticide, dye, medicine, food, and is used to complete the pressure vessel of vulcanization, nitrification, hydrogenation, hydrocarbonization, polymerization, condensation and other processes. According to the heating mode of the reaction kettle, it can be divided into a steam heating reaction kettle and an electric heating reaction kettle, and the heat transfer oil electrically heats the reaction kettle. According to the different types of sealing of the reactor, it can be divided into: packing sealing, mechanical sealing and magnetic sealing. The stainless steel reaction kettle has the characteristics of rapid heating, high temperature resistance, corrosion resistance, sanitation, no environmental pollution, no need for boiler automatic heating, convenient use, etc., and is widely used in petroleum, chemical, rubber, pesticide, dye, medicine, food, etc. The processes of vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation, etc. are completed.