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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 18, 2005
Accepted December 23, 2005

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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A multi-fluid nonrandom lattice fluid model: Mixtures

Moon Sam Shin Ki-Pung Yoo¹ Chul Soo Lee² Hwayong Kim^†

School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea ¹Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Korea ²Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, Korea

Korean Journal of Chemical Engineering, May 2006, 23(3), 476-481(6), 10.1007/BF02706752

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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).

Keywords

Multi-fluid Nonrandom Lattice Local Composition Equation of State

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