Process for the production of dichlorohydrin.

摘要

The invention relates to a continuous process for the production of dichlorohydrin which comprises: (a) reacting allyl chloride, water and chlorine in a reaction zone to form an aqueous reaction mixture of dichlorohydrin and reaction by-products, (b) passing said reaction mixture from said reaction zone as feed to a reverse osmosis zone, (c) subjecting said feed to reverse osmosis to afford: (1) a retentate stream having a dichlorohydrin content higher than said feed, and (2) a permeate stream having a dichlorohydrin content less than 10 per cent by weight of the dichlorohydrin content in said feed, (d) withdrawing said retentate stream, and (e) recycling at least part of said permeate stream to said reaction zone. i