HIGH PRESSURE VAPOR-LIQUID EQUILIBRIA OF PALM FATTY ACIDS DISTILLATES-CARBON DIOXIDE SYSTEM

High pressure solid–liquid equilibria of fatty acids

The solid–liquid phase diagrams of two binary mixtures of saturated fatty acids, formed by caprylic acid (C8:0) + myristic acid (C14:0) and lauric acid (C12:0) + myristic acid (C14:0), were measured using high pressure microscopy in the range of 0.1–90 MPa. It is shown that unlike for other long chain alkyl compounds such as alkanes the phase diagrams are only slightly affected by the pressure,...

Molecular model for carbon dioxide optimized to vapor-liquid equilibria.

A molecular model for carbon dioxide is presented, and the parameters of the Lennard-Jones sites, the bond length, and the quadrupole moment are optimized to experimental vapor-liquid equilibrium data. The resulting molecular model shows mean unsigned deviations to the experiment over the whole temperature range from triple point to critical point of 0.4% in saturated liquid density, 1.8% in va...

High pressure carbon dioxide pasteurization of liquid food Supercritical carbon dioxide pasteurization of liquid food

New Local Composition-Equation of State Mixing Rules for High Pressure Vapor-Liquid Equilibria Using EOS/AE

In this study using Equation of State/ Helmholtz excess energy function,  EOS/AE, two new local composition-Equation-of State mixing rules, LCEOS1 and LCEOS2 were developed in which the energy interaction parameters were expressed in terms of attractive and repulsive parameters of the cubic equation of state. The EOS/AE models are applied for equilibrium calculation of nat...

Binary Vapor-liquid Equilibria of Carbon Dioxide-light Hydrocarbons at Low Temperature*

light hydrocarbons at low temperatures is of interest in the design of the proper equipment to make such separations. In the previous paper4) of this series, the equilibrium relationships for two binary mixtures of carbon dioxide with ethylene and ethane at 0°C have been described. Those for the ethylene and ethsine binaries with carbon dioxide have been shown to form, minimum-boiling azeotrope...