China Drying Network Recently, Daqing Refining & Chemical Co., Ltd. acetonitrile workshop technical personnel on the E805 heat exchanger crystallization of hidden dangers for technical research, in the E805 dry tower condenser shell medium brine water valve installed two DN25 small valve, precise adjustment E805 frozen The brine flow smartly relieves the heat exchanger's crystallization risks and improves the distillation of acetonitrile products.
Drying tower exhaust condenser E805 cooling medium is frozen brine, in order to prevent the crystallization of the tube bundle, it is necessary to manually adjust the frozen brine water DN80 valve, frozen brine flow is not easy to control accurately. Moreover, the E805 crystallizes each time the warming treatment, must use the steam to sweep the heat exchanger tube layer, has wasted steam energy, causes the loss of the acetonitrile product again, reduced the acetonitrile product yield.
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