Simulation and optimization of extractive distillation for separation of azeotropic benzene/cyclohexane system

被引：0

作者：

Zhai, Jian ^{[1
]}

Liu, Yuliang ^{[1
]}

Li, Lumin ^{[1
]}

Wang, Qiuyuan ^{[2
]}

Sun, Lanyi ^{[1
]}

机构：

[1] State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Qingdao, 266580, Shandong

[2] Qingdao Soda Ash Industrial New Material and Technology Company Limited, Qingdao, 266043, Shandong

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Dividing wall column; Energy savings; Extraction; Genetic algorithm; Heat integrated pressure-swing; Optimization;

D O I：

10.11949/j.issn.0438-1157.20150781

中图分类号：

学科分类号：

摘要：

The separation of benzene and cyclohexane with furfural as entrainer was studied using conventional extractive distillation, extractive dividing wall column distillation and heat integrated pressure-swing extractive distillation. The three whole processes were simulated by commercial process simulator Aspen Plus V8.4. The sensitive analyses of all steady-state designs were carried out and the optimal flow sheets with minimum energy requirements have been established using the multi-objective genetic algorithm with constrains. Compared with the conventional configuration, the extractive dividing wall column distillation and heat integrated pressure-swing extractive distillation process with minimum heat duty of the reboiler presented the energy savings of 21.5% and 15.7%, respectively. The economic analysis was carried out to evaluate the economic feasibility of the three processes. The results clearly demonstrated that when compared with the conventional extractive distillation process, the total annual cost was reduced by 6.0% in the extractive dividing wall column and increased by 50.8% in the heat integrated pressure-swing extractive distillation, which provided a theory basis and design reference for the industrial design for extractive distillation process to separate azeotropic benzene and cyclohexane system. © All right reserved.

引用

页码：3570 / 3579

页数：9

共 26 条

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