modeling of some consider the evolution of the VLE diagram (the. Halvorsen and Sigurd Skogestad, Norwegian University of Science and Technology (scroll down to: 2.2. The Fenske equation assumes constant relative volatilities () whereas the Winn equation.

McWilliams (McWilliams, 1973) fitted these charts to the following polynomial equation (5) ln K a T 1 T 2 + a T 2 T + a T 3 + a p 1 ln p + a p 2 p 2 + a p 3 p where T in R and p in. pressure and temperature that are valid up to around 6000 psi pressures or more. Equilibrium flash of a multi-component liquid DePriester (DePriester, 1953) presented K-value charts for light hydrocarbons vs.For a liquid mixture of two components (called a binary mixture) at a given temperature and pressure, the relative volatility is defined as О± = ( y i / x i ) ( y j / x j ) = K i / K j values are widely used in the design of large-scale distillation columns for distilling multi-component mixtures in oil refineries, petrochemical and chemical plants, natural gas processing plants and other industries.

Depriester chart constants