共沸精馏法回收有机废液中1,1,2-三氯乙烷  

1,1,2-Trichloroethane recovery from organic waste liquid using azeotropic distillation

作　　者：孙腾[1] 伍联营[1] 胡仰栋[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《化学工程》2015年第7期16-20,共5页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(21376231)

摘　　要：采用共沸精馏法对某化工厂有机废液中1,1,2-三氯乙烷的回收进行了研究。分别以甲醇和水作为共沸剂,运用Aspen Plus软件进行过程模拟,给出了最优的分离工艺:甲醇作为共沸剂时,用量占原料量的3%,回流比为8.47;水作为共沸剂时,用量占原料量的1.55%,回流比为9.16。回收1,1,2-三氯乙烷的纯度均能达到99.5%以上,回收率达到93%以上。但甲醇作为共沸剂时,理论塔板数少,且回流比和能耗更低。运用填料塔对1,1,2-三氯乙烷的回收进行实验研究,结果与模拟结果吻合较好。The recovery of 1, 1,2-trichloroethane from organic waste liquid was studied using the method of azeotropic distillation. Methanol and water were selected as azeotropic agent. The process simulation was performed by Aspen Plus software, and the optimal separation process was given： when methanol is azeotropic agent, the amount of raw material is 3 % and reflux ratio is 8.47 ; when water is azeotropic agent, the amount of raw material is 1.55% and reflux ratio is 9. 16. The purity of recovered 1,1,2-trichloroethane can reach 99.5% and the recovery rate is more than 93%. However, when methanol is azeotropic agent, the number of tower plates and reflux ratio are small, and the energy consumption is low. The recovery of 1,1,2-trichloroethane was also studied by experiment using packing tower. The experimental results are in good agreement with the simulation results.

关 键 词：共沸精馏 1 1 2-三氯乙烷 过程模拟 

分 类 号：TQ222.23[化学工程—有机化工]