Isobaric vapor-liquid equilibrium for ternary system of ethanol, ethyl propionate and para-xylene at 101.3 kPa

Zhongpeng Xing; Yujie Gao; Hui Ding; Xianqin Wang; Lujun Li; Hang Zhou

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Isobaric vapor-liquid equilibrium for ternary system of ethanol, ethyl propionate and para-xylene at 101.3 kPa

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Isobaric vapor-liquid equilibrium for ternary system of ethanol, ethyl propionate and para-xylene at 101.3 kPa
- Chinese Journal of Chemical Engineering Vol. 26, Issue 3, Pages: 560-565(2018)
- Affiliations：
  
  1. 2 Tianjin Academy of Environmental Sciences,Tianjin,China,300191
  2. 3 Tianjin Huanke Environmental Planning Technology Development Company Limited,Tianjin,China,300191
  3. 4 School of Environmental Science and Engineering, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2018
- Accepted：
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Zhongpeng Xing, Yujie Gao, Hui Ding, Xianqin Wang, Lujun Li, Hang Zhou. Isobaric vapor-liquid equilibrium for ternary system of ethanol, ethyl propionate and para-xylene at 101.3 kPa[J]. Chin.J.Chem.Eng., 2018, 26(3): 560-565.
DOI：

Zhongpeng Xing, Yujie Gao, Hui Ding, Xianqin Wang, Lujun Li, Hang Zhou. Isobaric vapor-liquid equilibrium for ternary system of ethanol, ethyl propionate and para-xylene at 101.3 kPa[J]. Chin.J.Chem.Eng., 2018, 26(3): 560-565. DOI：

摘要

Abstract

Isobaric vapor-liquid equilibrium (VLE) data for the binary system ethyl propionate (2) + para-xylene (3) and ternary system ethanol (1) + ethyl propionate (2) + para-xylene (2) at atmospheric pressure (101.3 kPa) were obtained by a VLE modified othmer still. All the experimental data passed a point to point consistency test of Van Ness method

which verified the data reliability. The Wilson and UNIQUAC activity coefficient models were employed to correlate the binary VLE data to obtain binary interaction parameters. Based on binary interaction parameters

ternary VLE data of ethanol (1) + ethyl propionate (2) + para-xylene (3) were predicted by Wilson and UNIQUAC models

which proved that predicted values are consistent with the experimental data. Furthermore

azeotropic phenomenon between ethanol and ethyl propionate disappears when the mole ratio of para-xylene and binary system of ethanol and ethyl propionate is 1:1. Therefore

this paper convinced that para-xylene is a proper extractive additive that could be used in extractive distillation to separate the binary azeotropic system of ethanol and ethyl propionate.

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