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

doi:10.1016/j.cjche.2015.08.007

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. 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.

WeiWang, Zhi Yun, Zhigang Tang, Xia Gui. [J]. Chinese Journal of Chemical Engineering, 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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