Process for the production of dichlorohydrin

Details Process for the production of dichlorohydrin Process for the production of dichlorohydrin

C - Chemistry, Metallurgy

07

C

204/98.03

C07C 29/66 (2006.01) B01D 61/42 (2006.01) C07C 29/76 (2006.01) C07C 31/36 (2006.01)

Patent

CA 1287015

K 2316 A B S T R A C T PROCESS FOR THE PRODUCTION OF DICHLOROHYDRIN 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.

524311

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