中文摘要：

以环己烷、甲苯和1,2-二氯乙烷为候选共沸剂,采用非均相共沸精馏法从2-氯乙醇/水共沸物中分离出高浓度2-氯乙醇产品。通过ASPEN物性分析功能研究了不同共沸剂与2-氯乙醇/水体系形成共沸物的情况,并根据三元相图进行了过程的概念设计。在此基础上,通过ASPEN模拟和优化了采用不同共沸剂的分离过程的工艺条件,并以年度总费用最小为依据选择了甲苯为共沸剂,此时最优工艺条件为：共沸塔总理论板数为20块塔板,进料位置在第8块塔板,回流比为2;脱水塔总理论板数为30块塔板,进料位置在第20块塔板,回流比为1.5。在此工艺条件基础上进行了实验,结果表明2-氯乙醇产品纯度可达到99%以上,且回收率在93.5%,实验结果与模拟结果能较好吻合,文中的研究可为2-氯乙醇-水分离的工业化提供参考。

英文摘要：

To obtain high purity 2-ethylene chlorohydrin from its azeotrope with water via heterogeneous azeotropic distillation, cyelone-hexane, toluene and 1, 2-dichloroethane were taken as candidate azotropic agents. The property analysis function of ASPEN was used to analyze the azeotropes formed by the candidate agents, 2-ethylene chlorohydrin and water, and the conceptual separation process was designed via the ternary diagram. Then the separation process with different azeotropic agent was simulated and optimized with ASPEN, and toluene was selected as the azeotropic agent because of its total annual cost is minimal with the optimal process condition, i.e. 20 theoretical stages for the azeotropic column and the feed stage is 8 and reflux ratio is 2; 30 theoretical stage for the dehydrating column whose feed stage is 20 and reflux ratio is 1.5. At last the experiments were carried out based on the process condition, the result shows that the mass purity of 2-ethylene chlorohydrin product is not less than 99%, the mean recovery rate is 93.5%. and the simulation result is reliable. The work of this paper provides some guidance for the industrialization of the separation of 2-ethylene chlorohydrin-water.