非均相共沸精馏法分离2-氯乙醇-水
发布时间：2018-08-30 12:45
【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。
[Abstract]:High concentration 2-chloroethanol was isolated from 2-chloroethanol / water azeotrope by heterogeneous azeotropic distillation with cyclohexane, toluene and 1-methylene dichloroethane as candidate azeotropic agents. The formation of azeotrope with different azeotropic agents and 2-chloroethanol / water system was studied by ASPEN physical property analysis, and the conceptual design of the process was carried out according to the ternary phase diagram. On this basis, the process conditions of the separation process with different azeotropic agents were simulated and optimized by ASPEN, and toluene was selected as azeotropic agent based on the minimum annual total cost. The optimum technological conditions are as follows: the total theoretical plate number of azeotropic tower is 20 trays, the feed position is at the 8th tray, the reflux ratio is 2, the total theoretical plate number of desiccant tower is 30 trays, and the feed position is 20 trays, the reflux ratio is 1.5. The results show that the purity of 2-chloroethanol is over 99%, and the recovery rate is 93.55.The experimental results are in good agreement with the simulation results. The study can provide a reference for the industrialization of 2-chloroethanol-water separation.
【作者单位】： 青岛科技大学化工学院;
【基金】：国家自然科学青年基金资助项目(51506105)
【分类号】：TQ028.31;TQ223.3
本文编号：2213106
[Abstract]:High concentration 2-chloroethanol was isolated from 2-chloroethanol / water azeotrope by heterogeneous azeotropic distillation with cyclohexane, toluene and 1-methylene dichloroethane as candidate azeotropic agents. The formation of azeotrope with different azeotropic agents and 2-chloroethanol / water system was studied by ASPEN physical property analysis, and the conceptual design of the process was carried out according to the ternary phase diagram. On this basis, the process conditions of the separation process with different azeotropic agents were simulated and optimized by ASPEN, and toluene was selected as azeotropic agent based on the minimum annual total cost. The optimum technological conditions are as follows: the total theoretical plate number of azeotropic tower is 20 trays, the feed position is at the 8th tray, the reflux ratio is 2, the total theoretical plate number of desiccant tower is 30 trays, and the feed position is 20 trays, the reflux ratio is 1.5. The results show that the purity of 2-chloroethanol is over 99%, and the recovery rate is 93.55.The experimental results are in good agreement with the simulation results. The study can provide a reference for the industrialization of 2-chloroethanol-water separation.
【作者单位】： 青岛科技大学化工学院;
【基金】：国家自然科学青年基金资助项目(51506105)
【分类号】：TQ028.31;TQ223.3
【相似文献】
相关期刊论文 前10条
1 ;国产氯乙醇均聚橡胶性能擰定|!介[J];特种橡胶制品;1970年09期
2 ;合成氯乙醇的新型高效管式反应装置[J];上海化工;1979年02期
3 ;均聚型氯乙醇橡胶的扩大试验[J];上海化工;1973年01期
4 林峰;;氯乙醇的酸性精馏[J];石油化工;1993年03期
5 郭泰兴，，赵季芝;氯乙醇及其衍生物的制备和应用[J];氯碱工业;1994年07期
6 张存劳;郭建民;;酒精脱水法生产氯乙醇工艺技术[J];陕西化工;1992年03期
7 张澍声;;间羟乙砜基苯胺的新制法[J];染料工业;1987年05期
8 刘锦贵,马志,李毅,魏天俊;CaCl_2/Na_2HPO_4催化下合成氯乙醇的新工艺[J];化学世界;1999年07期
9 王钦;丁小东;夏传琴;阳萌;杜曦;龚考才;;酯交换法合成丙烯酸氯乙醇酯[J];化学研究与应用;2006年06期
10 ;氯乙醇生产新工艺[J];中国高校技术市场;1997年03期
本文编号：2213106
本文链接：https://www.wllwen.com/guanlilunwen/gongchengguanli/2213106.html
