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What is a multi-effect evaporator?

Created on:2024-05-29 08:54
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multi-effect evaporatoris mainly suitable for evaporation and crystallization of precipitated solution with crystals. It is mainly used in chemical industry, smelting of metal mining industry, pickling waste liquid of large steel mills, wet desulfurization waste liquid treatment of power plants, etc. In view of the characteristics and complexity of various solutions in various factories, Wuxi Lvhe Sheng will make specific technical schemes for the composition and content of precipitated solution provided by various industries for users' reference and selection.

multi-effect evaporator can recover the chemical composition of industrial wastewater, because wastewater containing high concentration of chemical substances is very destructive to water, soil and air. Sewage companies are also willing to invest in multi-effect evaporators, because the chemicals recovered from wastewater can be profitable. For example, sodium sulfate is recovered from waste water.

multi-effect evaporatorrecovery of sodium sulfate first enters the condensed water preheater for preheating. After preheating, the materials sequentially enter the 1. 2. three-effect evaporator for evaporation, concentration enhancement and crystallization. After reaching certain conditions, the materials are discharged, and then the solid-liquid separation is carried out under the action of the centrifuge: the separated solid is the product potassium chloride, the separated mother liquor flows back to the three-effect separation chamber for continuous evaporation, and the mother liquor is regularly discharged for treatment.

raw steam enters the shell side of the first-effect heating chamber for heat exchange and evaporation, and the generated raw steam condensate returns to the boiler room for reuse after preheating the material by the condensate preheater. The secondary steam evaporated by the first-effect evaporator then enters the shell side of the second-effect evaporator for heat exchange and evaporation. The secondary steam and secondary steam condensate generated by the two-effect evaporator enter the shell side of the three-effect evaporator for heat exchange and evaporation. The secondary steam distilled by the three-effect evaporator enters the indirect condenser for condensation, recovery and reprocessing.

in the process of water treatment, water decontamination, water hardening treatment, etc. are separated by multi-effect evaporator. Regarding the process of drying equipment to treat water under sealed conditions, the first is from the multi-effect evaporatordemineralized watercirculating water treatmentanalysis, softened water to remove the hardness, so that the water has intense corrosion, the circulating water system in the pipeline, heat exchange equipment and the appearance of the evaporative air cooler heat exchange tube can cause severe corrosion.

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