Generalized saturated liquid density prediction method for pure compounds and multi-component mixtures

A generalized saturated liquid density equation in conjunction with the Pre dictive-Soave-Redlich-Kwong (PSRK) equation of state has been developed. Th is equation uses the Mathias and Copeman temperature dependent term in addi tion to the critical temperature, critical density and dipole moment for pr ediction of saturated liquid density of pure compounds. The average absolut e error for prediction of the saturated liquid density of 4745 experimental data points for hydrocarbons, halogenated paraffins, Liquefied inorganic g ases, alcohols, ethers and acids was 0.91%. The equation was then used with the equation and mixing rules of Nasrifar and Moshfeghian to predict the s aturated liquid density of multi-component mixtures. The average absolute e rror for prediction of saturated liquid density of 87 multi-component syste ms containing nitrogen, hydrocarbons, alcohols, H2S, CO2 and halogenated pa raffins was 1.11% for 1407 experimental data points. (C) 2000 Elsevier Scie nce B.V. All rights reserved.