Jacket heat exchangers are widely used for heating and cooling

Date:2018-10-27

The disadvantage of the jacketed heat exchanger is 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. Jacket heat exchangers are mainly used in applications where steam is heated or cooled with cold water to control the reaction temperature and pressure in the reactor. Because the inside of the jacket cannot be cleaned, it is not suitable for the dirt-prone and dirt-laden medium to enter the jacket.

The jacketed heat exchanger is provided with a jacket on the outer wall of the container to make the structure simple; however, the heating surface is not limited by the wall surface of the container.

The heat transfer coefficient is increased and the liquid in the kettle is uniformly heated to be installed in the kettle. When a cooling water or a phase change-free heating agent is introduced into the jacket, a spiral baffle or other means for increasing the turbulence may be provided in the jacket to increase the heat transfer coefficient on the side of the jacket. Insufficient surface can also be installed inside the kettle. Jacket heat exchangers are widely used for heating and cooling of the reaction process.

It should be noted that the reactor with jacket heat exchange, its outer cylinder is subjected to the pressure of the medium in the jacket, and belongs to the internal pressure vessel; while the inner cylinder belongs to the external pressure vessel, so the jacket medium must be controlled during the production process. If the pressure exceeds the allowable pressure value, it is likely that the inner cylinder of the reactor is destabilized and crushed, causing equipment damage.

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