Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation

doi:10.1016/j.cjche.2017.11.003

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (5): 993-1002.DOI: 10.1016/j.cjche.2017.11.003

• Separation Science and Engineering • 上一篇下一篇

Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation

Hui Jia¹, Huixin Wang², Kang Ma¹, Mengxiao Yu¹, Zhaoyou Zhu¹, Yinglong Wang¹

1 College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
2 National Registration Center for Chemicals, SINOPEC Research Institute of Safety Engineering, Qingdao 266071, China

收稿日期:2017-09-04 修回日期:2017-11-04 出版日期:2018-05-28 发布日期:2018-06-29
通讯作者: Yinglong Wang,E-mail address:yinglongw@126.com
基金资助:
Supported by the National Natural Science Foundation of China (21676152) and the Key Research Project of Shandong Province (2016GSF116004).

Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation

Hui Jia¹, Huixin Wang², Kang Ma¹, Mengxiao Yu¹, Zhaoyou Zhu¹, Yinglong Wang¹

1 College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
2 National Registration Center for Chemicals, SINOPEC Research Institute of Safety Engineering, Qingdao 266071, China

Received:2017-09-04 Revised:2017-11-04 Online:2018-05-28 Published:2018-06-29
Contact: Yinglong Wang,E-mail address:yinglongw@126.com
Supported by:
Supported by the National Natural Science Foundation of China (21676152) and the Key Research Project of Shandong Province (2016GSF116004).

摘要/Abstract

摘要： Extractive distillation was investigated for separation of the minimum azeotrope of n-propanol/water, via the Aspen Plus simulation platform. Experimental data of n-propanol/water, which could pass the thermodynamic consistency test, were regressed to get suitable binary interaction parameters (BIPs) by the UNIQUAC thermodynamic model. The azeotrope system was heterogeneous in the simulation with built-in BIPs, which was contrary to the experimental data. The study focused on the effect of thermodynamic parameters on the prediction of phase behavior, and process design of extractive distillation. N-methyl-2-pyrrolidone (NMP) and ethylene glycol were used as solvents to implement the separation. Processes with built-in and regressed BIPs were explored, based on the minimum total annual cost (TAC). There were significant differences in the phase behavior simulation using different thermodynamic parameters, which showed the importance of BIPs in the design and optimization of extractive distillation.

关键词: Extractive distillation, Thermodynamic parameters, Phase behavior, UNIQUAC, TAC

Abstract: Extractive distillation was investigated for separation of the minimum azeotrope of n-propanol/water, via the Aspen Plus simulation platform. Experimental data of n-propanol/water, which could pass the thermodynamic consistency test, were regressed to get suitable binary interaction parameters (BIPs) by the UNIQUAC thermodynamic model. The azeotrope system was heterogeneous in the simulation with built-in BIPs, which was contrary to the experimental data. The study focused on the effect of thermodynamic parameters on the prediction of phase behavior, and process design of extractive distillation. N-methyl-2-pyrrolidone (NMP) and ethylene glycol were used as solvents to implement the separation. Processes with built-in and regressed BIPs were explored, based on the minimum total annual cost (TAC). There were significant differences in the phase behavior simulation using different thermodynamic parameters, which showed the importance of BIPs in the design and optimization of extractive distillation.

Key words: Extractive distillation, Thermodynamic parameters, Phase behavior, UNIQUAC, TAC

Hui Jia, Huixin Wang, Kang Ma, Mengxiao Yu, Zhaoyou Zhu, Yinglong Wang. Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation[J]. Chinese Journal of Chemical Engineering, 2018, 26(5): 993-1002.

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Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation

Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation

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