The jacketed heat exchanger is a type of partitioned wall heat exchanger. It is made by installing a jacket on the outer wall of the container and has a simple structure. However, its heating surface is limited by the container wall surface, and the heat transfer coefficient is not high. In order to improve the heat transfer coefficient and make the liquid in the kettle heat uniformly, a stirrer can be installed in the kettle. When cooling water or a phase-free heating agent is passed into the jacket, a spiral partition or other measures to increase turbulence can also be provided in the jacket to increase the heating coefficient on the jacket side. Jacketed heat exchangers are widely used for heating and cooling in the reaction process.
The jacketed heat exchanger is mainly used in the reactor. It is installed outside the reactor to form a closed jacket, so that the fluid enters the jacket and performs heat exchange with the materials in the reactor through the wall of the reactor.The structure of the jacketed heat exchanger is relatively simple, and the heat exchange can be performed at the same time as the material reaction, eliminating the trouble of setting up another heat exchange equipment.The disadvantages of the jacketed heat exchanger are that the heat transfer surface of the jacket is not large, the jacket gap is relatively narrow, the fluid flow speed is not large, and the heat transfer coefficient is not high.Jacketed heat exchangers are mainly used in situations where the reaction temperature and pressure in the reactor are controlled by heating with steam or cooling with cold water. Because the jacket cannot be cleaned, it is not suitable for medium that is prone to scale and dirt to enter the jacket.