Calculation of high-pressure vapor-liquid equilibria of non-polar asymmetric mixtures with an augmented van der waals equation of state

Chiaki Yokoyama, Kunio Arai, Shozaburo Saito

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1 Citation (Scopus)

Abstract

An augmented van der Waals equation of state developed in a previous study was applied to the calculation of high-pressure vapor-liquid equilibria of non-polar asymmetric mixtures. The equation of state for a non-polar substance comprised three terms, each of which was classified into repulsion, symmetric interaction and non-polar asymmetric interaction. Two types of mixing models based on the one-fluid model, that is, the van der Waals one-fluid model and a semiempirical mixing model of Kreglewski and Kay, were tested for both repulsion and symmetric interaction terms, while two types of semiempirical mixing models based on the one-fluid model and on the three-fluid model were developed for the non-polar asymmetric interaction term. This method, which applied a separate mixing model to each interaction term, provided good correlation results for the high-pressure vapor-liquid equilibria of non-polar asymmetric mixtures.

Original languageEnglish
Pages (from-to)109-113
Number of pages5
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume17
Issue number2
DOIs
Publication statusPublished - 1984

Keywords

  • Asymmetric Mixture
  • Equation of State
  • Fluid Model
  • Mixing Rule
  • Nonpolar Substance
  • Perturbation Theory
  • Physical Property
  • Vapor Liquid Equlibrium

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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