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    Process for the production of dichlorohydrin
    2.
    发明公开
    Process for the production of dichlorohydrin 无效
    生产二氯丙醇的方法

    公开(公告)号：EP0229415A1

    公开(公告)日：1987-07-22

    申请号：EP86202191.2

    申请日：1986-12-04

    申请人： SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

    发明人： Grimbsy, Frank Norman ,  Blytas, George Constantin

    IPC分类号： C07C29/66 ,  C07C31/36 ,  B01D61/44

    CPC分类号： B01D61/44 ,  B01D2311/08 ,  C07C29/76 ,  C07C31/36 ,  B01D2311/12 ,  C07C29/04 ,  C07C29/62

    摘要： The invention relates to a continuous process for the production of an aqueous solution of dichlorohydrin by the reaction of allyl chloride, water and chlorine in a reaction zone which comprises:

    a) electrodialyzing a significant part of the reaction mixture in an electrodialysis zone to afford (1) a concentrate stream having a chloride content higher than the concentrate inlet feed to said electrodialysis zone, and (2) a diluate stream containing dichlorohydrin and having a lower chloride content than said reaction mixture electrodialysis feed,
    b) neutralizing a substantial portion of the hydrogen ions in the concentrate stream by the addition of a basic substance,
    c) withdrawing a portion of said neutralized concentrate stream, and
    d) recycling said diluate stream from said electrodialysis zone to said reaction zone.

    摘要翻译： 本发明涉及通过烯丙基氯，水和氯在反应区中反应生产二氯丙醇水溶液的连续方法，该方法包括：a）将大部分反应混合物在电渗析区中电渗析，得到（ 1）氯离子含量高于进入所述电渗析区的浓缩物入口进料的浓缩物流，和（2）含有二氯丙醇并具有比所述反应混合物电渗析进料更低的氯化物含量的稀释物流，b）中和大部分 通过添加碱性物质浓缩物流中的氢离子，c）取出一部分所述中和的浓缩物物流，和d）将所述稀释物流从所述电渗析区循环至所述反应区。