Modelling the phase equilibria of multicomponent mixtures containing CO2, alkanes, water, and/or alcohols using the quadrupolar CPA equation of state

摘要: ABSTRACTIn this work, a quadrupolar cubic plus association (qCPA) equation of state is evaluated for its ability to predict the phase equilibria multicomponent mixtures containing CO2 and alkanes, alcohols, and/or water. A single binary interaction parameter employed in qCPA all combinations. All parameters are based solely on pure fluid or mixture data used only evaluate predictions. The performance is, mixtures, compared CPA where considered be either non-associating (inert), solvating self-associating. In latter two approaches, an additional adjustable pairs associating compound. results show that predictions with very similar best performing even though model uses fewer parameters. approaches typically satisfactory general behaviour the...