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Equation of state modeling of the phase equilibria of asymmetric CO2 + n-alkane binary systems using mixing rules cubic with respect to mole fraction by Martín Cismondi; Jørgen M. Mollerup; Marcelo S. Zabaloy is a Engineering article available to read on EtoBox.

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Both the equation of state (EOS) and the quadratic mixing rules proposed by van der Waals towards the end of the XIX century were enormous contributions to the understanding and modeling of fluids phase behavior. They set the basis for a consistent and useful representation of phase equilibria for a great diversity of mixtures. Nevertheless, the models for representing phase equilibria and physico-chemical properties of asymmetric systems may require more flexible mixing rules than the classical quadratic van der Waals (vdW) mixing rules or their equivalent (with regard to the number of available interaction parameters) in modern equations of state. In particular, the phase equilibria of binary mixtures containing CO 2 and heavy n-alkanes have been studied by an important number of authors and using different types of models, achieving only partially accurate results and realizing the difficulties that these systems showing type III phase behavior (from C14 on) present for predicting or even correlating their phase equilibrium data in wide ranges of temperature and pressure. Cubic mixing rules (CMRs), implemented as a natural extension of the classical quadratic mixing rules, const

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Author

Martín Cismondi; Jørgen M. Mollerup; Marcelo S. Zabaloy

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0896-8446)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)