A new coupling process for synthesis of epichlorohydrin from dichloropropanols

As an important material used in the production of epoxy resins, epichlorohydrin is usually derived from the saponification and cyclization of dichloropropanol in a tower reacting system. In order to reduce energy consumption and wastewater discharge, a new process of tubular reactor coupled with wiped film evaporation was adopt to produce epichlorohydrin. The effects of different technological parameters on the yield of the coupling process were investigated, such as reactants' molar ratio, reaction & evaporation temperature, residence time and so on. Results indicated that the use of coupling process will significantly reduce the material consumption and shorter the reaction time. This coupling process provided a useful suggestion for the design of the industrial plants.