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Vapour-liquid equilibrium of the CH4Ar, CH4CO, and ARCO systems at elevated pressures

✍ Scribed by L.J. Christiansen; Aa. Fredenslund; J. Mollerup

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
602 KB
Volume
13
Category
Article
ISSN
0011-2275

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✦ Synopsis

High pressure vapour-liquid equilibrium data for the CH 4-Ar, CH 4-CO, and Ar-CO systems are presented in this work. The data are obtained isothermally and for each data point 7", P, x i, and Yi are measured. When possible, the measurements are compared to other published data, and good agreement is found with previous investigations.

Each isotherm is subjected to a thermodynamic analysis, and activity coefficients are calculated. When both components are condensable, the ordinary symmetrical convention for normalization of activity coefficients is used, and when one component is supercritical, the unsymmetrical convention is used.

The activity coefficients are adjusted to a constant pressure via the Poynting correction factor, and these pressure adjusted activity coefficients are subjected to a thermodynamic consistency test based on the isothermal-isobasic form of the Gibbs-Duhem equation. It is found that the maximum inconsistency for the data presented in this work is 10%.

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