Abstract
A multi-fluid nonrandom lattice fluid model with no temperature dependence of close packed volumes of a mer, segment numbers and energy parameters of pure systems and its consistent method for phase equilibrium calculation were presented in the previous paper. In this work, the model was extended to mixtures by using consistent method for phase equilibrium calculation with fugacity coefficients derived from the present equation of state and it was applied to vapor-liquid equilibrium. We consistently tested the present model on 17 phase equilibrium data sets of vapor-liquid equilibria and compared it with the MF-NLF model and the SAFT model. The present model (3 pure parameters for pure component and one binary interaction parameter) showed better results for most systems than the MF-NLF model (6 adjustable pure parameters and one binary interaction parameter) and the SAFT model (3 pure parameters and one binary interaction parameter).
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References
Abrams, D. S. and Prausnitz, J. M., “Statistical thermodynamics of liquid mixtures: A new expression for the excess Giggs energy of partly or completely miscible systems,”AIChE J.,21, 116 (1975).
Guggenheim, E. A., Mixtures, Clarendon Press, Oxford, 215 (1952).
Huang, S. H. and Radosz, M., “Equation of state for small, large, polydisperse and associating molecules,”Ind. Eng. Chem. Res.,29, 2284 (1990).
Kang, J., Yoo, K., Kim, H., Lee, J., Yang, D. and Lee, C. S., “Development and current status of the Korea thermophysical properties databank (KDB),”Int. J. Thermophys.,22, 487 (2001).
Lacombe, R. H. and Sanchez, I. C., “Statistical thermodynamics of fluid mixtures,”J. Phys. Chem.,80, 2368 (1976).
Neau, E., “A consistent method for phase equilibrium calculation using the Sanchez-Lacombe lattice-fluid equation-of-state,”Fluid Phase Equilibria,203, 133 (2002).
Panayiotou, C. and Vera, J. H., “Statistical thermodynamics of r-mer fluids and their mixtures,”Polymer J.,14, 681 (1982).
Prausnitz, J. M., Lichtenhalter, R. N. and de Azevedo, E. G.,Molecular thermodynamics of fluid-phase equilibria, Prentice-Hall, Englewood Cliffs, NJ (1999).
Renon, H. and Prausnitz, J. M., “Local compositions in thermodynamic excess functions for liquid mixtures,”AIChE J.,14, 135 (1968).
Sanchez, I. C. and Lacombe, R. H., “An elementary molecular theory of classical fluids. pure fluids,”J. Phys. Chem.,80, 2352 (1976).
Shin, M. S., Yoo, K. P., Lee, C. S. and Kim, H., “A Multi-fluid nonrandom lattice fluid model. 1. General derivation and application to pure fluids,”Submitted to Korean J. Chem. Eng. (2005).
Shin, M. S., Yoo, K. P., You, S. S. and Lee, C. S., “A new nonrandom lattice fluid model and its simplification by two-liquid theory for phase equilibria of complex mixtures,”Int. J. Thermophysics,16, 723 (1995).
Wilson, G. M., “Vapor-liquid equilibrium. XI. A new expression for the excess free energy of mixing,”J. Am. Chem. Soc.,86, 127 (1964).
Yoo, K. P., Kim, H. and Lee, C. S., “Unified equation of state based on the lattice fluid theory for phase equilibria of complex mixtures. Part I. Molecular thermodynamic framework,”Korean J. Chem. Eng.,12, 277 (1995).
Yoo, K. P., Kim, H. and Lee, C. S., “Unified equation of state based on the lattice fluid theory for phase equilibria of complex mixtures. Part II. Application to complex mixtures,”Korean J. Chem. Eng.,12, 289 (1995).
Yoo, K. P., Shin, H. Y. and Lee, C. S., “Approximate nonrandom twofluid lattice-hole theory. General derivation and description of pure fluids,”Bull. Korean Chem. Soc.,18, 965 (1997).
Yoo, K. P., Shin, H. Y. and Lee, C. S., “Approximate nonrandom twofluid lattice-hole theory. Thermodynamic properties of real mixtures,”Bull. Korean Chem. Soc.,18, 841 (1997).
Yoo, K. P., Shin, M. S., Yoo, S. J., You, S. S. and Lee, C. S., “A new equation of state based on nonrandom two-fluid lattice theory for complex mixtures,”Fluid Phase Equilibria,111, 175 (1995).
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Shin, M.S., Yoo, KP., Lee, C.S. et al. A multi-fluid nonrandom lattice fluid model: Mixtures. Korean J. Chem. Eng. 23, 476–481 (2006). https://doi.org/10.1007/BF02706752
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DOI: https://doi.org/10.1007/BF02706752