【作者】 吴协舜；

【导师】 袁向前；

【作者基本信息】 华东理工大学 ， 化学工程， 2012， 硕士

【摘要】 二氯乙烷(EDC)是生产聚氯乙烯的最基本的原料,传统石油路线生产二氯乙烷的方法有两种：直接氯化法和氧氯化法。无论哪种工艺,都是以纯乙烯作为基础原料。使用石油炼制过程产生的干气替代纯乙烯,可以变废为宝,同时降低对乙烯的依赖。而且经济价值非常显著,具有十分广阔的应用前景。本文对干气直接氯化制备二氯乙烷工艺进行开发。考察相应的反应特性以及传质对氯化反应的影响,研究确定中试反应器型式、以及不同干气组成条件下相应最优的工艺条件：反应器形式为管道反应器串联鼓泡塔反应器,反应温度为84℃,乙烯与氯气配比为1：1.2,催化剂用量占EDC总量的0.4%,管道内物料停留时间约为14秒。在此条件下,主产物的选择性达99.5%,乙烯的转化率在98%以上,产品EDC的浓度98.5%以上。更多还原

【Abstract】 Dichloroethane (EDC) is the basic material for preparing polrvinyl chloride (PVC). Direct chloration and oxychlorination are the traditional two methods to produce EDC from oil route. But pure ethylene is required in both of the methods. We can reduce dependence on ethylene using dry gas as substitute. At the same time, the prospection will be exciting because of the significant economic value.Develop a new process for preparing EDC from direct chloration of dry gas. The influences on this reaction by characteristics of mass transfer have been studied. Finally, optimal technology conditions are determined as follows:Reactor form is pipe reactor connecting bubble reactor in series, reaction temperature is 84℃, ratio of ethylene and chlorine is 1:1.2, catalyst consumption is 0.4% of the total EDC, residence time is 14 seconds. On this condition, selectivity of ethylene is 99.5%, conversion of ethylene is more than 98%, and the concentration of EDC can reach to 98.5%.更多还原