Multiple-effect evaporation system steam condensation water heat energy reutilizationoun device

Abstract

The invention discloses a multiple-effect evaporation system steam condensation water heat energy reutilizationoun device which comprises a first effect evaporation unit, a second effect evaporation unit and a third effect evaporation unit which are connected in sequence, the first effect evaporation unit is connected with a steam input pipe, the third effect evaporation unit is connected with a feeding groove, a gas phase tube of the third effect evaporation unit is connected to a surface condenser, a vacuum pump is arranged on the surface condenser, and the surface condenser and a cooling tower form a cooling loop; a steam condensation water pipe of the first effect evaporation unit is connected to a boiler room or a preheater, evaporation condensate tubes of the second effect evaporation unit, the third effect evaporation unit and the surface condenser are connected to a condensate collection groove, and a crystal slurry pipe of the second effect evaporation unit is connected to a cooler crystallizer. The multiple-effect evaporation system steam condensation water heat energy reutilizationoun device has the advantages of high crystallization efficiency and low heat energy consumption.

Description

technical field [0001] The invention relates to an evaporation separation device, in particular to a device for reusing heat energy of steam condensed water in a multi-effect evaporation system. Background technique [0002] Evaporation and crystallization devices are widely used in chemical industry, non-ferrous metal industry, pesticide industry, food industry, pharmaceutical industry, ammonia desulfurization, mining smelting, steel mills, oil fields and other industries for waste water treatment. Through the recovery of crystals in waste water, pure environmental protection Treatment and up-to-standard discharge are deepened into environmental protection treatment and comprehensive utilization. The ammonium chloride, potassium chloride, sodium sulfate and other crystals in the waste water are recovered and utilized. [0003] In order to improve the utilization rate of steam, the evaporation crystallization device generally adopts a multi-effect series system, such as a t...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the utilization rate of steam, the evaporation crystallization device generally adopts a multi-effect series system, such as a three-effect evaporation crystallization system. In a multi-effect evaporation system, the heat energy of the first effect heater generally uses fresh steam, and the fresh steam The steam condensate produced after heat exchange in the first effect heater has a relatively high temperature, usually above 95°C, and is basically not polluted by the materials in the system. However, the traditional evaporator technology may convert the fresh steam The generated condensate is discharged randomly and is not fully utilized

Images