Vapor-fluid equilibrium calculations in binary systems of hydrocarbons + related compounds not containing oxygen; comparison between methods using equations of state and activity coefficients

Journal Article · Sat Aug 01 04:00:00 EDT 1981 · Ind. Eng. Chem. Fundam.; (United States)

DOI:https://doi.org/10.1021/i100003a014· OSTI ID:5412191

Goral, M; Maczynski, A; Schmidt, G; Wenzel, H

Comparative calculations on 470 binary isotherms or isobars at pressure /rho/<2 bar were carried out with two common equations using the concept of activity coefficients and three van der Waals type equations of state: the Redlich-Kwong and Peng-Robinson equations and a more recently proposed equation. To eliminate the influence of deviations in pure-component vapor pressure, the equation of state parameters were fitted to vapor pressure and liquid density. Binary interaction parameters were fitted to the bubble point line. The representation of bubble and dew-point lines are compared. The equations of state, though using only one binary parameter, were found to represent reliable experimental data with the same accuracy as the Redlich-Kister or Wilson equations, except in systems including methylamine, acetronitrile, aniline, pyridine, and piperidine. 20 refs.

• Research Organization: Univ Erlangen-Nuremberg, Germany
• OSTI ID: 5412191
• Journal Information: Ind. Eng. Chem. Fundam.; (United States), Journal Name: Ind. Eng. Chem. Fundam.; (United States) Vol. 20:3; ISSN IECFA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical &amp; Physicochemical Properties-- (-1987)
EQUATIONS
EQUATIONS OF STATE
HYDROCARBONS
ORGANIC COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE