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Correlation and prediction of vapor‐liquid equilibria with the redlich‐kwong equation of state
Author(s) -
Zudkevitch David,
Joffe Joseph
Publication year - 1970
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.690160122
Subject(s) - fugacity , thermodynamics , equation of state , vapor–liquid equilibrium , chemistry , binary number , hydrogen sulfide , activity coefficient , binary system , component (thermodynamics) , organic chemistry , mathematics , physics , sulfur , arithmetic , aqueous solution
Abstract A modified Redlich‐Kwong equation has been applied to the calculation of phase equilibria in multicomponent systems. The two parameters of the Redlich‐Kwong equation are treated as temperature functions. They are obtained for each pure component from experimental vapor pressures and liquid densities with the help of a generalized fugacity coefficient correlation for saturated vapors. The need to submit coefficients for pure components is thus eliminated. At least one experimental vapor‐liquid equilibrium point is required to establish an interaction constant for each binary system. Applications have been made to binary and multicomponent systems containing hydrocarbons, hydrogen, carbon dioxide, and hydrogen sulfide.