A multi-fluid nonrandom lattice fluid model: Mixtures |
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Authors: | Moon Sam Shin Ki-Pung Yoo Chul Soo Lee Hwayong Kim |
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Affiliation: | (1) School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 151-744 Seoul, Korea;(2) Department of Chemical and Biomolecular Engineering, Sogang University, 121-742 Seoul, Korea;(3) Department of Chemical and Biological Engineering, Korea University, 136-701 Seoul, Korea |
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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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Keywords: | Multi-fluid Nonrandom Lattice Local Composition Equation of State |
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