Patent ID: 6093286
Filing Date: 2000-07-25
Classification: C07C

Abstract:
A process for separating n-butyl chloride from a composition comprising n-butyl chloride and other isomeric C.sub.4 alkyl chlorides, C.sub.1 -C.sub.3 alkyl chlorides, C.sub.1 -C.sub.4 alcohols, ethers, ketones, nitrites, and organo-sulfur compounds, comprising:a) distilling the composition comprising at least 90% by weight of n-butyl chloride, at least one other isomeric C.sub.4 alkyl chloride, at least one C.sub.1 -C.sub.3 alkyl chloride, at least one C.sub.1 -C.sub.4 alcohol, at least one ester, at least one ketone, at least one nitrile, and at least one organo-sulfur compound, to produce a condensed product or distillate having an enriched content of the n-butyl chloride as compared to the composition; and distillation bottom phase comprising high-boilers;b) cooling the distillate, andc) washing the cooled distillate in a plurality of stages comprising washing with water followed by washing with dilute solution of an alkali metal hydroxide in water or washing with dilute solution of an alkali metal hydroxide in water followed by washing with water.