Improving Accuracy of PR Equation of State for Predicting Gas Condensate Density by a New Volume Translated Model

摘要

This work presents a temperature-dependent volume translated model for Peng-; Robinson equation of state (PR EOS) for calculating liquid densities of pure compounds and mixtures in the saturated region. For pure compounds, the average absolute percent deviation (AAPD) were calculated in the reduced temperature range of (0.3-0.99) Similarly for mixtures, the (AAPD) of different binary, ternary and multicomponent mixtures were determined. The AAPD for 29 pure compounds and different mixtures(binary, ternary and multicomponents) were 1.29 and 1.35 respectively. The accuracy of this model was compared well with three well-known liquid density correlations and other earlier volume translated models.