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http://dx.doi.org/10.7464/ksct.2015.21.2.124

Solubility Measurement of Carbon Dioxide in Alkylcarbonates and Triacetin at High Pressure  

Kim, Ji Won (Department of Chemical and Biological Engineering, Korea National University of Transportation)
Hong, Won Hi (Department of Chemical and Biomolecular Engineering, KAIST)
Hong, Yeon Ki (Department of Chemical and Biological Engineering, Korea National University of Transportation)
Publication Information
Clean Technology / v.21, no.2, 2015 , pp. 124-129 More about this Journal
Abstract
The constant-volume method was used to determine the solubility of CO2 in various physical absorbents such as DMPEG (dimethyl ether of polyethylene glycol), DEC (diethyl carbonate), DMC (dimethyl carbonate), and TAT (triacetin) in the total pressure range from 5 to 30 bar. The Peng-Robinson equation of state has been used to describe the equilibrium behavior of these mixtures. It was found that the solubility of absorbents was in the of DMPEG250 > TAT > DEC > DMC at the same temperature. Futhermore, the solubiity of blended absorbent of DMPEG250 and DEC is higher than that of DMPEG 250 alone. Therefore, blended absorbent of DMPEG250 and DEC is expected to be an effective and low cost absorbent for physical absorption in precombustion CO2 capture.
Keywords
Carbon dioxide; Physical absorption; Solubility; Dimethyl ether of polyethylene glycol (DMPEG); Diethyl carbonate (DEC); Blended absorbent;
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