SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 51 ›› Issue (11): 109-114.DOI: 10.1016/j.cjche.2021.09.006

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Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K

Zhansheng Li, Jiayu Song, Shouhai Zhang, Jinyan Wang, Xigao Jian   

  1. State Key Laboratory of Fine Chemicals, Liaoning High Performance Polymer Engineering Research Center, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
  • Received:2021-07-21 Revised:2021-08-21 Online:2023-01-18 Published:2022-11-18
  • Contact: Zhansheng Li,E-mail:lizs@dlut.edu.cn;Xigao Jian,E-mail:jian4616@dlut.edu.cn
  • Supported by:
    This work was financially supported by National Key Research and Development Program of China (2017YFB0307600), Liaoning Revitalization Talents Program (XLYC1802073), and Dalian High-level Talent Innovation Support Program (2019RD08).

Measurement and correlation of liquid-liquid equilibrium for the ternary system (water + 1,2-dichloroethane + sulfolane) at 288.15, 298.15, and 308.15 K

Zhansheng Li, Jiayu Song, Shouhai Zhang, Jinyan Wang, Xigao Jian   

  1. State Key Laboratory of Fine Chemicals, Liaoning High Performance Polymer Engineering Research Center, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
  • 通讯作者: Zhansheng Li,E-mail:lizs@dlut.edu.cn;Xigao Jian,E-mail:jian4616@dlut.edu.cn
  • 基金资助:
    This work was financially supported by National Key Research and Development Program of China (2017YFB0307600), Liaoning Revitalization Talents Program (XLYC1802073), and Dalian High-level Talent Innovation Support Program (2019RD08).

Abstract: Sulfolane is an important aprotic polar solvent. Liquid-liquid equilibrium (LLE) data for the ternary systems of water + 1,2-dichloroethane + sulfolane were measured at temperatures of 288.15, 298.15 and 308.15 K under the atmospheric pressure. The distribution coefficient and selectivity were determined from the measured LLE data, which showed that 1,2-dichloroethane is a suitable extractant for the recovery of sulfolane from its aqueous solution. The nonrandom two-liquid (NRTL) model and the universal quasi-chemical (UNIQUAC) model were utilized to correlate the experimental LLE data. The low values of RMSD indicated that the ternary system could be fitted well by the NRTL and UNIQUAC models. The consistency of the binary interaction parameters for the two thermodynamic models obtained was confirmed by the topological information contained in the Gibbs energy of mixing function (GM/RT).

Key words: Phase equilibria, Thermodynamics, Parameter estimation, Sulfolane, NRTL model, UNIQUAC model

摘要: Sulfolane is an important aprotic polar solvent. Liquid-liquid equilibrium (LLE) data for the ternary systems of water + 1,2-dichloroethane + sulfolane were measured at temperatures of 288.15, 298.15 and 308.15 K under the atmospheric pressure. The distribution coefficient and selectivity were determined from the measured LLE data, which showed that 1,2-dichloroethane is a suitable extractant for the recovery of sulfolane from its aqueous solution. The nonrandom two-liquid (NRTL) model and the universal quasi-chemical (UNIQUAC) model were utilized to correlate the experimental LLE data. The low values of RMSD indicated that the ternary system could be fitted well by the NRTL and UNIQUAC models. The consistency of the binary interaction parameters for the two thermodynamic models obtained was confirmed by the topological information contained in the Gibbs energy of mixing function (GM/RT).

关键词: Phase equilibria, Thermodynamics, Parameter estimation, Sulfolane, NRTL model, UNIQUAC model