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Received February 8, 2002
Accepted February 3, 2003
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Modified Soave-Redlich-Kwong Equations of State Applied to Mixtures Containing Supercritical Carbon Dioxide
1Faculty of Eng., Mech. Eng. Dept., Univ. of La Serena, Casilla 554, La Serena-Chile 2Centro de Informaci´on Tecnol´ogica, Casilla 724, La Serena, Chile
jvalderr@userena.cl
Korean Journal of Chemical Engineering, July 2003, 20(4), 709-715(7), 10.1007/BF02706913
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Abstract
The well-known equation of state Soave-Redlich-Kwong and two of its modifications are applied to describe vapor-liquid equilibrium in binary asymmetric mixtures, which contain supercritical carbon dioxide and a heavy component. Several mixing rules including the classical van der Waals mixing rules with one and two interaction parameters, non-quadratic mixing rules, and the used of a Gibbs free energy model, are used with these equations. Seven mixtures containing supercritical carbon dioxide are considered in the study. The experimental data were obtained from literature sources and the adjustable parameters were found by minimizing the errors between predicted and experimental data of the concentration of the solute in the liquid phase. The work allows concluding on the advantages, disadvantages and expected accuracy of these equations of state and mixing rules for correlating vapor-liquid equilibrium data in asymmetric systems as those studied.
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Kwak TY, Mansoori GA, Chem. Eng. Sci., 41(5), 1303 (1986)
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Panagiotopoulos AZ, Reid RC, "High Pressure Phase Equilibria in Ternary Fluid Mixtures with a Supercritical Component," ACS Symposium Series 329, "Supercritical Fluids," American Chemical Society, Chicago, Illinois, Sep. 8-13 (1985)
Pavlicek J, Richter M, Fluid Phase Equilib., 90, 125 (1993)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15(1), 59 (1976)
Patel NC, Teja AS, Chem. Eng. Sci., 37(3), 463 (1982)
Prausnitz JM, Lichtenthaler RN, GomesdeAzevedo E, "Molecular Thermodynamics of Fluid-Phase Equilibria," Third Edition, Prentice-Hall, Inc. (1999)
Redlich O, Kwong JNS, Chem. Rev., 44(2), 233 (1949)
Sandoval R, Wilczek-Vera G, Vera JH, Fluid Phase Equilib., 52, 119 (1989)
Shibata S, Sandler S, Ind. Eng. Chem. Res., 28(12), 1893 (1989)
Soave G, Chem. Eng. Sci., 27, 1197 (1972)
Stryjek R, Vera JH, Can. J. Chem. Eng., 64, 334 (1986)
Trebble MA, Bishnoi PR, Fluid Phase Equilib., 29, 465 (1986)
Trebble MA, Fluid Phase Equilib., 42, 117 (1988)
Valderrama JO, J. Chem. Eng. Jpn., 23(1), 87 (1990)
Valderrama JO, Rojas AS, Inf. Technol., 10(1), 101 (1999)
Walas SM, "Phase Equilibria in Chemical Engineering," Butterworth Publisher (1985)
Weng WL, Chen JT, Lee MJ, Am. Chem. Soc., 1995 (1994)
Wilson GM, Adv. Cryog. Eng., 11, 392 (1966)
Wong DS, Sandler SI, AIChE J., 38, 671 (1992)
Yau JS, Chiang YY, Shy DS, Tsai FN, J. Chem. Eng. Jpn., 25(5), 544 (1992)
Yakoumis IV, Vlachos K, Kontogeorgis GM, Coutsikos P, Kalospiros NS, Tassios D, J. Supercrit. Fluids, 9(2), 88 (1996)
Zou M, Yu ZR, Kashulines P, Risvi SSH, J. Supercrit. Fluids, 3, 23 (1990)
Zudkevitch D, Joffe J, AIChE J., 16(1), 112 (1970)
