【作者】 祁宏祥；

【导师】 朱为宏； 张晓薇；

【作者基本信息】 华东理工大学 ， 制药工程， 2012， 硕士

【摘要】 环氧氯丙烷是氯醇橡胶、合成环氧树脂、甘油及缩水甘油醚等重要原料,属于有机化工原料和精细化工产品的重要品种之一。目前,环氧树脂用量和用途的不断扩大,环氧氯丙烷的需求强劲,但面对环境保护的日益增强的需求,使得坏氧氯丙烷的环保、绿色合成成为重要的发展方向。与传统的丙烯高温氯化法、乙酸丙烯酯法和近年来发展的甘油法合成环氧氯丙烷工艺相比,H2O2/钛-硅分子筛催化氯丙烯直接环氧化合成环氧氯丙烷的方法,因为无污染、高转化率、高选择性以及反应条件温和等优势,故已成为环氧氯丙烷绿色环保合成工艺的发展趋势。本论文根据国内外文献资料的报道及走访调查,以钛-硅分子筛作催化剂,以50wt%H2O2为氧化剂,甲醇为溶剂,研究了用氯丙烯直接环氧化合成环氧氯丙烷的工艺体系和钛-硅分子筛催化剂再生方法。在小试基础上,设计了一套不等容二釜串联连续合成中试路线,对小试实验进行了验证,并结合既有工程经验,设计了一种催化剂连续过滤回收方式。另外,对该工艺的“三废”情况进行了简要说明,对原料的消耗及成本进行了计算、比较和分析。更多还原

【Abstract】 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.更多还原