Mechanical Vapor Recompression Falling Film Evaporation Process Method and System
A technology of mechanical recompression and falling film evaporation, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of large footprint, high operating cost, and low stability and other issues to achieve energy saving, low operating costs, and high thermal efficiency
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[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] Such as figure 1 As shown, the mechanical recompression falling film evaporation system includes a high-salt wastewater pretreatment system, a falling film evaporator 11, a vapor compression recycling system, a condensed water recycling system, and a crystal recycling system.
[0030] The high-salt wastewater pretreatment system includes a raw water tank 1, a first feed pump 2, a first preheater 3, a second preheater 4, a second condensate pump 7, a degasser 8, and a second feed pump 9. Steam flash tank 10, the first concentrated water pump 17; the feed pipe is connected to the feed port of the raw water tank 1, and the discharge port of the raw water tank 1 is connected to the first preheater 3 through the first feed pump 2 pipeline The feed port of the first preheater 3 is connected to the feed port of the second preheater 4, and the feed port of the second p...
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