Multiple Effect Falling Film Evaporator Information:

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Multiple effect falling film evaporator

The working principle of the multi-effect falling film evaporator is to add the material liquid from the upper tube box of the falling film evaporator heating chamber, distribute it evenly to each heat exchange tube through the liquid distribution and film forming device, and flow into a uniform film from top to bottom under the gravity and vacuum induction and air flow. During the flow process, the steam is heated and vaporized by the shell heating medium, and the generated steam and liquid phase enter the separation chamber of the evaporator together, the steam and liquid are fully separated, and the steam enters the condenser to condense (single-effect operation) or enters the next effect evaporator as the heating medium, so as to achieve multi-effect operation, and the liquid phase is discharged by the separation chamber.

The multi-effect falling film evaporator has the characteristics of high heat transfer efficiency, small temperature difference loss, short material residence time, not easy to deteriorate, small pressure drop, easy operation and low energy consumption. It is widely used in chemical industry, medicine, light industry, food, petrochemical, metallurgy and other industries. Especially suitable for heat sensitive materials and high viscosity materials. In addition, the multi-effect falling film evaporator is also suitable for evaporation and concentration of foamable materials to avoid the formation of foam.

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