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A cubic simplified perturbed hard‐chain equation of state for fluids with chainlike molecules
Author(s) -
Wang LiSheng,
Guo TianMin
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710412
Subject(s) - thermodynamics , binary number , equation of state , cubic function , component (thermodynamics) , chain (unit) , partition function (quantum field theory) , partition (number theory) , phase (matter) , cubic crystal system , function (biology) , statistical physics , materials science , chemistry , physics , mathematics , mathematical analysis , crystallography , combinatorics , organic chemistry , quantum mechanics , arithmetic , evolutionary biology , biology
The simplified version of the perturbed hard‐chain theory (SPHCT) developed by Kim et al. (1986) is modified by reformulating the attractive portion of the canonical partition function for mixtures, and replacing the repulsive portion by a simple simulated expression. The final equation of state developed is cubic in volume. The test results on pure fluids, binary/multi‐component mixtures and reservoir fluids indicate that the CSPHC EOS retains the advantages of the original PHCT, and significant improvements over the SPHCT in predicting the VLE of heavy hydrocarbon‐containing/CO 2 ‐containing mixtures, and liquid phase density are observed.