The high salt water desalination crystallization unit of a methanol-to-olefin plant was studied.The plant crystallizes and purifies all the high salt water generated in the production process through the pretreatment unit,sodium chloride crystallization unit,sodium sulfate crystallization unit and miscellaneous salt evaporation crystallization unit.The crystallization products of sodium chloride and sodium sulfate meet the industrial dry salt level 1 standard,and the output water reaches the recycling standard,effectively treating high salt water,realizing the recycling and reuse of high salt water,achieving the purpose of reducing costs and increasing efficiency,meeting the national environmental protection requirements,and having guiding significance for the construction,reconstruction and expansion of high salt water treatment in coal chemical plants,especially for methanol-to-olefin projects.
关键词
甲醇制烯烃/高盐水/分盐结晶/环保
Key words
Methanol to olefin/High salt water/Salt crystallization/Environment protection
维普
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