Simulated annealing-based optimal design of energy efficient ternary extractive dividing wall distillation process for separating benzene-isopropanol-water mixtures

doi:10.1016/j.cjche.2020.08.041

Abstract

Abstract: This article investigates the performances of different extractive distillation processes intensified with dividing-wall column for separating benzene-isopropanol-water ternary mixtures. All the processes with ethylene glycol as solvent are optimized with the minimal total annual cost (TAC) as target. In order to get the global optimal solution intelligently, an improved simulated annealing algorithm is adopted, which is programmed in MATLAB and linked to Aspen Plus. The results show that the extractive dividing wall column-solvent (EDWC-S) process consisting of an extractive dividing wall column and a solvent recovery column is the best scheme. It can reduce the TAC by 28.65% and CO₂ emissions by 32.84% compared to the conventional triple-column extractive distillation process.

Key words: Extractive distillation, Dividing wall column, Simulated annealing, Optimization, Benzene/isopropanol/water

摘要： This article investigates the performances of different extractive distillation processes intensified with dividing-wall column for separating benzene-isopropanol-water ternary mixtures. All the processes with ethylene glycol as solvent are optimized with the minimal total annual cost (TAC) as target. In order to get the global optimal solution intelligently, an improved simulated annealing algorithm is adopted, which is programmed in MATLAB and linked to Aspen Plus. The results show that the extractive dividing wall column-solvent (EDWC-S) process consisting of an extractive dividing wall column and a solvent recovery column is the best scheme. It can reduce the TAC by 28.65% and CO₂ emissions by 32.84% compared to the conventional triple-column extractive distillation process.

关键词: Extractive distillation, Dividing wall column, Simulated annealing, Optimization, Benzene/isopropanol/water

Min Li, Yue Cui, Xiaojing Shi, Zhishan Zhang, Xiaoxiao Zhao, Xiuyu Zhu, Jun Gao. Simulated annealing-based optimal design of energy efficient ternary extractive dividing wall distillation process for separating benzene-isopropanol-water mixtures[J]. Chinese Journal of Chemical Engineering, 2021, 33(5): 203-210.

References

[1] W. Shen, L. Dong, S. Wei, J. Li, H. Benyounes, X. You, V. Gerbaud, Systematic design of an extractive distillation for maximum-boiling azeotropes with heavy entrainers, AlChE J. 61(2015) 3898-3910.
[2] V. Gerbaud, I. Rodriguez-Donis, L. Hegely, P. Lang, F. Denes, X. You, Review of extractive distillation. Process design, operation, optimization and control, Chem. Eng. Res. Design 141(2019) 229-271.
[3] S. Sun, L. Lü, A. Yang, S.A. Wei, W. Shen, Extractive distillation: Advances in conceptual design, solvent selection, and separation strategies, Chin. J. Chem. Eng. 27(2019) 1247-1256.
[4] Y. Wang, G. Bu, X. Geng, Z. Zhu, P. Cui, Z. Liao, Design optimization and operating pressure effects in the separation of acetonitrile/methanol/water mixture by ternary extractive distillation, J. Clean. Prod. 218(2019) 212-224.
[5] Z. Zhang, Q. Zhang, G. Li, M. Liu, J. Gao, Design and control of methyl acetatemethanol separation via heat-integrated pressure-swing distillation, Chin. J. Chem. Eng. 24(2016) 1584-1599.
[6] X. Wang, L. Xie, P. Tian, G. Tian, Design and control of extractive dividing wall column and pressure-swing distillation for separating azeotropic mixture of acetonitrile/N-propanol, Chem. Eng. Process.: Process Intensif. 110(2016) 172-187.
[7] A. Yang, W. Shen, S. Wei, L. Dong, J. Li, V. Gerbaud, Design and control of pressure-swing distillation for separating ternary systems with three binary minimum azeotropes, AlChE J. 65(2019) 1281-1293.
[8] C. Wang, Z. Zhang, X. Zhang, C. Guang, J. Gao, Comparison of pressure-swing distillation with or without crossing curved-boundary for separating a multiazeotropic ternary mixture, Sep. Purif. Technol. 220(2019) 114-125.
[9] Z. Zhu, D. Xu, X. Liu, Z. Zhang, Y. Wang, Separation of acetonitrile/methanol/ benzene ternary azeotrope via triple column pressure-swing distillation, Sep. Purif. Technol. 169(2016) 66-77.
[10] Y. Wang, G. Bu, Y. Wang, T. Zhao, Z. Zhang, Z. Zhu, Application of a simulated annealing algorithm to design and optimize a pressure-swing distillation process, Comput. Chem. Eng. 95(2016) 97-107.
[11] Q.-K. Le, I.J. Halvorsen, O. Pajalic, S. Skogestad, Dividing wall columns for heterogeneous azeotropic distillation, Chem. Eng. Res. Design 99(2015) 111-119.
[12] A. Tabari, A. Ahmad, A semicontinuous approach for heterogeneous azeotropic distillation processes, Comput. Chem. Eng. 73(2015) 183-190.
[13] C. Guang, X. Shi, Z. Zhang, C. Wang, C. Wang, J. Gao, Comparison of heterogeneous azeotropic and pressure-swing distillations for separating the diisopropylether/isopropanol/water mixtures, Chem. Eng. Res. Design 143(2019) 249-260.
[14] A. Yang, S. Sun, A. Eslamimanesh, S.A. Wei, W. Shen, Energy-saving investigation for diethyl carbonate synthesis through the reactive dividing wall column combining the vapor recompression heat pump or different pressure thermally coupled technique, Energy 172(2019) 320-332.
[15] G. Li, C. Wang, C. Guang, Z. Zhang, Energy-saving investigation of hybrid reactive distillation for n-butyl acetate production from two blending feedstocks, Sep. Purif. Technol. 235(2020) 116163.
[16] J. Kaur, V.K. Sangal, Reducing energy requirements for ETBE synthesis using reactive dividing wall distillation column, Energy 126(2017) 671-676.
[17] C. Wang, Z. Zhang, X. Zhang, J. Gao, B. Stewart, Energy-saving hybrid processes combining pressure-swing reactive distillation and pervaporation membrane for n-propyl acetate production, Sep. Purif. Technol. 221(2019) 1-11.
[18] S. Arifin, I-Lung Chien, Design and control of an isopropyl alcohol dehydration process via extractive distillation using dimethyl sulfoxide as an entrainer, Ind. Eng. Chem. Res. 47(2008) 790-803.
[19] N.R. Rodriguez, M.C. Kroon, Isopropanol dehydration via extractive distillation using low transition temperature mixtures as entrainers, J. Chem. Thermodyn. 85(2015) 216-221.
[20] P.D. Ghuge, N.A. Mali, S.S. Joshi, Comparative analysis of extractive and pressure swing distillation for separation of THF-water separation, Comput. Chem. Eng. 103(2017) 188-200.
[21] P.V. Mangili, M.P. Maia, Comparison of the exergetic performance and CO2 emissions of tetrahydrofuran-water separation processes, Chemical Engineering and Processing-Process Intensification 147(2020) 107816.
[22] C.C. Yi, W.C. Huang, I.L. Chien, Energy-efficient heterogeneous extractive distillation system for the separation of close-boiling cyclohexane/cyclohexene mixture, Journal of the Taiwan Institute of Chemical Engineers 87(2018) 26-35.
[23] C.C. Yi, I.L. Chien, Control study to enhance the controllability of heterogeneous extractive distillation: Cyclohexane/cyclohexene separation, Industrial & Engineering Chemistry Research 58(2019) 3211-3224.
[24] A. Yang, H. Zou, I.L. Chien, D. Wang, S. Wei, J. Ren, W. Shen, Optimal design and effective control of triple-column extractive distillation for separating ethyl acetate/ethanol/water with multiazeotrope, Industrial & Engineering Chemistry Research, 58(2019) 7265-7283.
[25] X. Shi, X. Zhao, Z. Zhang, M. Li, J. Gao, Energy-saving quaternary extractive distillation processes with single- or double-dividing-wall column for separation of acetone/methanol/butanone/tert-butyl alcohol, Chem. Eng. Process. -Process Intensif. 153(2020) 107999.
[26] Z. Zhang, C. Wang, C. Guang, C. Wang, Separation of propylene oxidemethanol-water mixture via enhanced extractive distillation: Design and control, Chem. Eng. Process. -Process Intensif. 144(2019) 107651.
[27] A.A. Kiss, D.J.P.C. Suszwalak, Enhanced bioethanol dehydration by extractive and azeotropic distillation in dividing-wall columns, Sep. Purif. Technol. 86(2012) 70-78.
[28] Y. Zhao, K. Ma, W. Bai, D. Du, Z. Zhu, Y. Wang, J. Gao, Energy-saving thermally coupled ternary extractive distillation process by combining with mixed entrainer for separating ternary mixture containing bioethanol, Energy 148(2018) 296-308.
[29] G. Modla, P. Lang, Removal and recovery of organic solvents from aqueous waste mixtures by extractive and pressure swing distillation, Ind. Eng. Chem. Res. 51(2012) 11473-11481.
[30] S. Ma, X. Shang, M. Zhu, J. Li, L. Sun, Design, optimization and control of extractive distillation for the separation of isopropanol-water using ionic liquids, Sep. Purif. Technol. 209(2019) 833-850.
[31] S. Sun, W. Chun, A. Yang, W. Shen, P. Cui, J. Ren, The separation of ternary azeotropic mixture: Thermodynamic insight and improved multi-objective optimization, Energy 206(2020) 1247-1256.
[32] X.-L. Yang, J.D. Ward, Extractive distillation optimization using simulated annealing and a process simulation automation server, Ind. Eng. Chem. Res. 57(2018) 11050-11060.
[33] A. Yang, Y. Su, I.L. Chien, S. Jin, C. Yan, S.A. Wei, W. Shen, Investigation of an energy-saving double-thermally coupled extractive distillation for separating ternary system benzene/toluene/cyclohexane, Energy 186(2019) 115756.
[34] Y. Cui, X. Shi, C. Guang, Z. Zhang, C. Wang, C. Wang, Comparison of pressureswing distillation and heterogeneous azeotropic distillation for recovering benzene and isopropanol from wastewater, Process Saf. Environ. Protect. 122(2019) 1-12.
[35] Y. Cui, Z. Zhang, X. Shi, C. Guang, J. Gao, Triple-column side-stream extractive distillation optimization via simulated annealing for the benzene/isopropanol/ water separation, Sep. Purif. Technol. 236(2020) 116303.