Phase Equilibria for CO2-Ethanol Mixtures by Perturbed-Chain Statistical Associating Fluid Theory

Song Po Yang; Hong Mei Wang; Dong Fu

doi:10.4028/www.scientific.net/AMM.411-414.2979

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 411-414Phase Equilibria for CO2-Ethanol Mixtures by...

Phase Equilibria for CO₂-Ethanol Mixtures by Perturbed-Chain Statistical Associating Fluid Theory

Abstract:

The perturbed-chain statistical associating fluid theory (PC-SAFT) is used to correlate and predict the phase equilibria and the triple point pressure of CO₂ and ethanol binary mixtures. The binary interaction parameters (k_ij) are regressed by fitting to the experimental data of mixtures. The vapor-liquid equilibria and liquid-liquid equilibria of the mixtures are investigated and the influence of temperature and pressure on the phase equilibria and the triple point pressures is demonstrated. Our results show that the pressure dependent k_ij can describe the phase equilibria of CO₂- ethanol mixtures quantitatively well.

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Periodical:

Applied Mechanics and Materials (Volumes 411-414)

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2979-2982

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https://doi.org/10.4028/www.scientific.net/AMM.411-414.2979

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September 2013

Authors:

Song Po Yang, Hong Mei Wang, Dong Fu

Keywords:

CO₂- Ethanol Mixture, PC-SAFT, Phase Equilibria, Triple Point Pressure

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