Study On Chemical Process Of Epichlorohydrin (ECH) Via Direct Epoxidation Of 3-Chloroprop-1-ene

Epichlorohydrin is a raw material and fine chemical product, especially for the preparation of epoxide resins, glycerine, pichlorohydrin rubber and glycerin ether. Recently, the demand of epichlorohydrin has been increased sharply with the expanding market of epoxide resins. As a consequence, the ecological protection in the manufacture of epichlorohydrin becomes quite critical, resulting in a hot and urgent research topic to develop green chemical process of epichlorohydrin.Compared with the traditional processes of high temperature chlorination of propylene and ally acetate method, and recently developed glycerin method, the chemical process of epichlorohydrin (ECH) via direct epoxidation of 3-chloroprop-1-ene using H2O2/titanium-silicon zeloite as a catalyst has become a widely-accepted green technology due to several distinct advantages such as no pollution, high yield, good selectivity and mild reaction conditions.According to the domestic and international literatures, the dissertation mainly focused on the chemical process of epichlorohydrin (ECH) via direct epoxidation of chloropropene and the regerenation technology of the catalyst, using titanium-silicon molecular sieve as catalyst,50wt% H2O2 as oxidizer, and methyl alcohol as solvent. Based on the parameters from lab experiments, a set of continuous pilot-scale line as well as a continuous filtration for catalyst were proposed.In addition, the process of "three wastes", the calculation of raw material consumption and cost were briefly discussed and analyzed.