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Prediction of vapor‐liquid equilibria of petroleum fractions
Author(s) -
Mikolaj Paul G.,
Dev Lachhman
Publication year - 1971
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690170220
Subject(s) - naphtha , thermodynamics , chemistry , absolute deviation , binary number , petroleum , carbon number , vapor–liquid equilibrium , activity coefficient , chromatography , mathematics , organic chemistry , statistics , physics , arithmetic , alkyl , aqueous solution , catalysis
Abstract The thermodynamic treatment of phase equilibria proposed by Chueh and Prausnitz has been modified to extend their method to systems of petroleum fractions. These modifications, which include the use of a symmetric convention for normalizing activity coefficients and replacement of the dilated van Laar model with a regular solution model, were required because existing data were insufficient to establish the needed binary interaction parameters. The resulting correlation was compared with experimental data on a naphtha‐furnace oil mixture at conditions up to 660°F. and 517 lb./sq.in.abs. The computed K values showed an average absolute deviation of 9.1%, while K values predicted by the Chao‐Seader correlation deviated by 12.4%.