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

Hui Jia; Huixin Wang; Kang Ma; Mengxiao Yu; Zhaoyou Zhu; Yinglong Wang

doi:10.1016/j.cjche.2017.11.003

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

Separation Science and Engineering | Updated：2026-01-06

- Effect of thermodynamic parameters on prediction of phase behavior and process design of extractive distillation
- Chinese Journal of Chemical Engineering Vol. 26, Issue 5, Pages: 993-1002(2018)
- Affiliations：
  
  2 National Registration Center for Chemicals, SINOPEC Research Institute of Safety Engineering,Qingdao,China,266071
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.11.003
  CLC：
- Published：2018
- Accepted：
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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]. Chin.J.Chem.Eng., 2018, 26(5): 993-1002.
DOI：

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]. Chin.J.Chem.Eng., 2018, 26(5): 993-1002. DOI： 10.1016/j.cjche.2017.11.003.

摘要

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.

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