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    • 10. 发明公开
    • Process for the production of dichlorohydrin
    • Verfahren zur Herstellung von Dichlorhydrin。
    • EP0247671A1
    • 1987-12-02
    • EP87200902.2
    • 1987-05-14
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    • Blytas, George ConstantinShain, Stephen
    • C07C31/36C07C29/66C07C29/86
    • C07C31/36
    • A continuous process for the production of an organic solvent solution of dichlorohydrin, which comprises:

      a) reacting allyl chloride, water and chlorine in a reaction zone to form an aqueous mixture of dichlorohydrin,
      b) contacting in an extraction zone the reaction zone effluent with a water-immiscible inert organic solvent for the dichlorohydrin to obtain a dichlorohydrin-enriched solvent and an aqueous phase,
      c) passing said dichlorohydrin-enriched solvent from said extrac­tion zone,
      d) passing said aqueous phase from the extraction zone to a reverse osmosis zone,
      e) subjecting said aqueous phase to reverse osmosis in said reverse osmosis zone to obtain: (1) a retentate stream having a chloride content higher than said aqueous phase, and (2) a permeate stream having a chloride content lower than said aqueous phase,
      f) withdrawing said retentate stream, and
      g) recycling at least part of said permeate stream from step (e) to the reaction zone of step (a).
    • 一种用于生产二氯丙醇有机溶剂溶液的连续方法,其包括:a)在反应区中使烯丙基氯,水和氯反应以形成二氯丙醇的水性混合物,b)在萃取区中使反应区流出物与 用于二氯丙醇的与水不混溶的惰性有机溶剂,以获得富含二氯丙醇的溶剂和水相,c)使来自所述萃取区的富含二氯丙醇的溶剂通过,d)将所述水相从萃取区通到反渗透区 e)使所述水相在所述反渗透区中反渗透,得到:(1)氯化物含量高于所述水相的滞留物流,和(2)氯化物含量低于所述水相的渗透物流 f)取出所述滞留物流,和g)将来自步骤(e)的至少部分所述渗透物流再循环到步骤(a)的反应区。 Ë