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primary topic: A perturbed-chain SAFT equation of state applied to mixtures of short- and long-chain n -alkanes

A perturbed-chain SAFT equation of state applied to mixtures of short- and long-chain n -alkanes
type: AcademicArticle
type: Article
abstract: A simplified hard-chain dimer theory is employed with perturbed-chain statistical associating fluid theory (PC-SAFT) in calculating the vapor pressures and saturated liquid volumes of pure n-alkanes from methane to n-eicosane. Compared to the original PC-SAFT, the developed model is in better agreement with the experimental vapor pressures and saturated liquid volumes of n-alkanes along the vapor-liquid coexistence curve and the critical properties from n-butane toward longer n-alkanes. Predicting the vapor-liquid equilibria (VLE) of binary mixtures containing methane and a long-chain n-alkane, the new model describes the mixtures more accurately than PC-SAFT. With no binary interaction parameter, the model adequately describes the experimental VLE data, in particular, near the critical points. In the prediction of the VLE of mixtures containing ethane, propane, n-hexane, and a long-chain n-alkane, the differences between the two models become less appreciable. © 2013 American Chemical Society.
date: 2013
volume: 52
issue: 19
is part of: Industrial and Engineering Chemistry Research
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Industrial and Engineering Chemistry Research
type: Collection
issn: 08885885

K. Nasrifar
type: Person
given name: K.
family name: Nasrifar

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primary topic: A perturbed-chain SAFT equation of state applied to mixtures of short- and long-chain n -alkanes