Solubilities of CO2 in some glycol ethers under high pressure by experimental determination and correlation

doi:10.1016/j.cjche.2015.08.007

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (3): 373-378.DOI: 10.1016/j.cjche.2015.08.007

• 第25届中国过程控制会议专栏 • 上一篇下一篇

WeiWang^1,3, Zhi Yun^1,3, Zhigang Tang², Xia Gui¹

收稿日期:2015-05-22 修回日期:2015-06-30 出版日期:2016-03-28 发布日期:2016-04-08
通讯作者: Xia Gui

Solubilities of CO₂ in some glycol ethers under high pressure by experimental determination and correlation

WeiWang^1,3, Zhi Yun^1,3, Zhigang Tang², Xia Gui¹

1 College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2 State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2015-05-22 Revised:2015-06-30 Online:2016-03-28 Published:2016-04-08
Supported by:
Supported by the National Natural Science Foundation of China(21306088), the State Key Laboratory of Chemical Engineering(SKL-ChE-13A01, Tsinghua University, China), and the Priority Academic Program Development of Jiangsu Higher Education Institutions(China).

摘要/Abstract

Abstract: The binary vapor-liquid equilibrium data of CO₂ in diethylene glycol(monomethyl, monoethyl, monobutyl, dimethyl, diethyl, dibutyl) ether were determined from 288.15 to 318.15 K at pressure up to 6 MPa based on the constant-volumemethod.Itwas found by contrast that the ether group in solvents can promote the CO₂ absorption, but the hydroxyl group will inhibit the CO₂ absorption.Furthermore, the solubilities of CO₂ showed an upward trendwith the increasing molecular lengths of absorbents.The experimental data were also correlatedwith a modified Patel-Teja equation of state(PT EOS) combined with the traditional van derWaals one-fluid mixing rules and the results showed a satisfactory agreement between the model and the experimental data.

Key words: Vapor-liquid equilibrium, CO₂, Diethylene glycol ethers, PT EOS

WeiWang, Zhi Yun, Zhigang Tang, Xia Gui. [J]. Chinese Journal of Chemical Engineering, 2016, 24(3): 373-378.

WeiWang, Zhi Yun, Zhigang Tang, Xia Gui. Solubilities of CO₂ in some glycol ethers under high pressure by experimental determination and correlation[J]. Chin.J.Chem.Eng., 2016, 24(3): 373-378.

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Solubilities of CO₂ in some glycol ethers under high pressure by experimental determination and correlation

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