The Pfgc Equation of State at the Age of Fourteen

The purpose of this paper was to review and report the recent advances and progress that have been achieved on the fourteen year old PFGC equation of state. This paper will also discuss the good (pros) and the bad (cons) of this equation of state. Emphasis will be made on the following categories:A. Prediction of the pure component PVT properties1. Hydrocarbons in particular n-alkanes2. Selected non-hydrocarbons such as N2, H2S, CO2, H2O3. 1-Alkanols4. Refrigerants5. Coal derived constituentsB. Vapor- Liquid-Equilibrium1. Hydrocarbon systems2. Hydrocarbon + water systems3. 1 -Alkanol + water systems4. Water + acid gases ( e.g. H2S & CO2 ) systems5. 1-alkanol + n-alkane systemsC. Vapor-Liquid Hydrocarbon-Liquid water EquilibriumD. Hydrate formation and inhibition by methanol based on the basic model of Prausnitz and Parrish.In all of the above categories comparison between the experimental data and those predicted by the PFGC equation of state will be presented.