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    • 16. 发明公开
    • Process for the production of dichlorohydrin
    • 生产二氯丙醇的方法
    • EP0228118A2
    • 1987-07-08
    • EP86202158.1
    • 1986-12-03
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    • Blytas, George ConstantinFoster, Elton GordonGrimsby, Frank Norman
    • C07C29/66C07C29/86C07C31/36C07C31/10
    • C07C31/36B01D61/44B01D2311/04B01D2311/10B01D2311/12
    • The invention relates to 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 solution 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 an electrodialysis zone,
      e) electrodialyzing said aqueous phase in said electrodialysis zone to obtain: (1) a concentrate stream having chloride content higher than said aqueous phase, and (2) a diluate stream having chloride content lower than said aqueous phase,
      f) withdrawing said concentrate stream, and
      g) recycling at least part of said diluate stream from step (e) to the reaction zone of step (a).
    • 本发明涉及生产二氯丙醇有机溶剂溶液的连续方法,该方法包括:a)使烯丙基氯,水和氯在反应区中反应以形成二氯丙醇水溶液,b)在提取区中使 反应区流出物与水不混溶的惰性有机溶剂混合以得到二氯丙醇富集溶剂和水相,c)使所述富含二氯丙醇的溶剂从所述萃取区通过,d)将所述水相从萃取区通入 e)在所述电渗析区中对所述水相进行电渗析以获得:(1)具有比所述水相高的氯化物含量的浓缩物流,和(2)具有比所述水相低的氯化物含量的稀释物流,f) 回收所述浓缩物流,和g)将来自步骤(e)的至少部分所述稀释物流再循环至步骤(a)的反应区。