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    • 7. 发明授权
    • Treatment of waste water from nitrile production
    • 处理腈水生产废水
    • US4246417A
    • 1981-01-20
    • US905958
    • 1978-05-15
    • Utah Tsao
    • Utah Tsao
    • B01D3/38C02F1/20C02F1/58C02F9/00C07D213/57C07C121/30C07C121/54C07C121/56
    • C02F1/586B01D3/38C02F1/20C02F2103/38Y10S203/03
    • Waste water recovered from a nitrile production effluent, containing ammonia, hydrogen cyanide, carbon dioxide and water soluble polymers is stripped of ammonia, carbon dioxide and hydrogen cyanide to produce an aqueous stream containing the water soluble polymer. At least a portion of this stream is introduced into a steam scrubber to generate steam therefrom, with scrubber bottoms and any remaining water from the stripping operation being introduced into a reboiler to provide steam for the stripping and an aqueous concentrate of the water soluble polymer. Heat for the reboiler can be provided by indirect heat transfer with steam from the scrubber which produces a condensate suitable as feed water for steam generation.
    • 从腈生产流出物中回收的含氨,氰化氢,二氧化碳和水溶性聚合物的废水被除去氨,二氧化碳和氰化氢,以产生含有水溶性聚合物的水流。 将该流的至少一部分引入蒸汽洗涤器以从其中产生蒸汽,其中洗涤塔底部和来自汽提操作的任何剩余的水被引入再沸器以提供用于汽提的蒸汽和水溶性聚合物的含水浓缩物。 用于再沸器的热可以通过间接传热与来自洗涤器的蒸汽提供,其产生适于作为用于蒸汽产生的给水的冷凝物。