Application of the LCVM model to multicomponent systems: Extension of the UNIFAC interaction parameter table and prediction of the phase behavior of synthetic gas condensate and oil systems

摘要: Abstract The LCVM model of Boukouvalas et al. (1994) uses the translated and modified Peng—Robinson equation state (EoS) coupled with Original UNIFAC excess Gibbs energy ( G E ) introduces a new mixing rule (a linear combination Vidal Michelsen ones) for parameter in attractive term EoS. table is here extended to include several gas/CH 2 , gas/ACH, gas/ACCH gas/gas pairs. Correlation prediction results binary systems are very satisfactory, including large size differences their components — where other EoS/ models fail as well at high pressures (up 2000 bar). These parameters then applied bubble- dew-point pressures, K values volume percent liquid (VPL) synthetic gas condensate oil systems. Very satisfactory again obtained except, expected, pressure section VPL condensates. comparable using conventional rules regressed parameters, superior models.