Abstract
Daridon, J.L., Lagourette, B., Saint-Guirons, H. and Xans, P., 1993. A cubic equation of state model for phase equilibrium calculation of alkane + carbon dioxide + water using a group contribution k ij . Fluid Phase Equilibria, 91: 31-54. This paper presents a general procedure for the calculation of phase equilibria of paraffin, CO 2, water and mixtures thereof based on a modified Peng and Robinson equation of state linked with a group contribution k ij . This procedure gives a good representation of the transitions of pure substances, including water and heavy alkanes (C 10 to C 20) as well as carbon dioxide-alkane mixtures. It also provides quite satisfactory results for calculation of mutual solubilities of water and alkanes (or carbon dioxide) in conditions of pressure between 0.1 and 50 MPa and temperature between 293 and 523 K.
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