Vapor-liquid equilibria for alcohol/hydrocarbon systems using the CPA Equation of State

 
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1997 (EN)
Vapor-liquid equilibria for alcohol/hydrocarbon systems using the CPA Equation of State (EN)

Yakoumis, IV (EN)
Tassios, DP (EN)
Voutsas, EC (EN)
Kontogeorgis, GM (EN)

N/A (EN)

The recently developed Cubic-Plus-Association Equation of State (CPA EoS) is extended in this study to binary systems containing one associating compound (alcohol) and an inert one (hydrocarbon). CPA combines the Soave-Redlich-Kwong (SRK) equation of state for the physical part with an association term based on perturbation theory. The classical van der Waals one-fluid mixing rules are used for the attractive and co-volume parameters, alpha and b, while the extension of the association term to mixtures is rigorous and does not require any mixing rules. Excellent correlation of Vapor-Liquid Equilibria (VLE) is obtained using a small value for the interaction parameter (k(ij)) in the attractive term of the physical part of the equation of state even when it is temperature-independent. CPA yields much better results than SRK and its performance is similar to that of other association models, like the Anderko EoS, and the more complex SAFT and Simplified SAFT EoS. (C) 1997 Elsevier Science B.V. (EN)

journalArticle

Vapor-liquid equilibria (EN)
Association (EN)
Equations of state (EN)
Perturbation techniques (EN)
Thermal effects (EN)
Hydrocarbons (EN)
Phase equilibria (EN)
Cubic plus association equation of state (CPA EoS) (EN)
Soave Redlich Kwong (SRK) equation of state (EN)
Binary mixtures (EN)
Application (EN)
Alcohols (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Fluid Phase Equilibria (EN)

1997


ELSEVIER SCIENCE BV (EN)



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