Pure component vapour pressure from a Carnahan-Starling equation of state: theoretically based temperature law for the attractive parameter

The proposed equation of state associates the Carnahan-Starling hard-sphere repulsion term with an attraction term of the Redlich-Kwong type containing a temperature function α(T r). It is applied for calculating the vapour pressures of 14 pure hydrocarbon and non-hydrocarbon components. For α(T r),...

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Bibliographic Details
Published in:Fluid phase equilibria 1982, Vol.9 (2), p.105-117
Main Authors: Marchand, Bernard, Huron, Marie-Jose, Vidal, Jean
Format: Article
Language:English
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Summary:The proposed equation of state associates the Carnahan-Starling hard-sphere repulsion term with an attraction term of the Redlich-Kwong type containing a temperature function α(T r). It is applied for calculating the vapour pressures of 14 pure hydrocarbon and non-hydrocarbon components. For α(T r), three empirical laws and one law deduced from the Clausius-Clapeyron equation are investigated. This last one gives the best results, and its two adjustable parameters may be generalized as a function of the acentric factor.
ISSN:0378-3812
1879-0224
DOI:10.1016/0378-3812(82)80010-1