AN IMPROVED PROCESS FOR THE MANUFACTURE OF EPOXIDES PARTICULARLY EPICHLOROHYDRIN

摘要

A process for preparing epichlorohydrin comprising the following steps : (a) reacting allyl chloride with an inorganic peroxide compound in the presence of at least one solvent at a temperature of about 30 to 60 degree C in a fixed bed column reactor containing a catalyst to obtain a resultant containing a mixture of epichlorohydrin, unreacted allyl chloride, solvent and water; (b) diluting the mixture with water, wherein the mass ratio of water to the mixture is about 0.2 to 0.7, to obtain a diluted mixture; (c) cooling the diluted mixture to about 5-15 degree C to obtain a cooled diluted mixture; (d) separating organic phase and aqueous phase from the cooled diluted mixture; (e) separating and recovering unreacted allyl chloride and epiochlorohydrin individually from the organic phase by fractional distillation; and (f) separating and recovering solvent and water individually from the aqueous phase by fractional distillation.