Process for the production of dichlorohydrin.

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. …