Measurements and Predictions of Multicomponent Vapor-Liquid Equilibria

Abstract

Dew-points were determined of the systems hydrogen+carbon monoxide+methane+carbon dioxide+propane and hydrogen+carbon monoxide+methane+carbon dioxide+n-butane at a temperature of 0°C and a pressure range of 8 to 46kg/cm²•G. In the determination of dewpoint two sets of composition of propane- or n-butane-free quaternary gas mixtures were tested. The experimental results were treated as the vapor phase solubility of propane or n-butane into quaternary mixtures. The estimations of dew-point and vapor-liquid equilibrium constants were made by the Chao-Seader and the BWR methods. For estimations of dew-point, deviations were 5 to 10°C from the experimental data.