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

doi:10.1016/j.cjche.2017.10.020

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (3): 560-565.DOI: 10.1016/j.cjche.2017.10.020

• Chemical Engineering Thermodynamics • 上一篇下一篇

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

Zhongpeng Xing¹, Yujie Gao^2,3, Hui Ding⁴, Xianqin Wang⁴, Lujun Li⁴, Hang Zhou¹

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Tianjin Academy of Environmental Sciences, Tianjin 300191, China;
3 Tianjin Huanke Environmental Planning Technology Development Company Limited, Tianjin 300191, China;
4 School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China

收稿日期:2017-03-15 修回日期:2017-10-20 出版日期:2018-03-28 发布日期:2018-04-18
通讯作者: Hui Ding
基金资助:
Supported by the National Natural Science Foundation of China (21376166).

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

Zhongpeng Xing¹, Yujie Gao^2,3, Hui Ding⁴, Xianqin Wang⁴, Lujun Li⁴, Hang Zhou¹

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Tianjin Academy of Environmental Sciences, Tianjin 300191, China;
3 Tianjin Huanke Environmental Planning Technology Development Company Limited, Tianjin 300191, China;
4 School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China

Received:2017-03-15 Revised:2017-10-20 Online:2018-03-28 Published:2018-04-18
Contact: Hui Ding
Supported by:
Supported by the National Natural Science Foundation of China (21376166).

摘要/Abstract

摘要： 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.

关键词: Vapor-liquid equilibrium, Azeotrope, Ethanol, Ethyl propionate, Para-xylene

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.

Key words: Vapor-liquid equilibrium, Azeotrope, Ethanol, Ethyl propionate, Para-xylene

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]. Chinese Journal of Chemical Engineering, 2018, 26(3): 560-565.

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

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

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