V. Feroiu et D. Geana, PREDICTION OF VAPOR-LIQUID-EQUILIBRIA AT HIGH-PRESSURES USING ACTIVITY-COEFFICIENTS AT INFINITE DILUTION, Fluid phase equilibria, 120(1-2), 1996, pp. 1-10
A modified procedure of using the Huron-Vidal mixing rule based on ava
ilable activity coefficients at infinite dilution at low pressures is
shown to be useful for making vapor-liquid equilibrium predictions for
non ideal mixtures at high temperatures and pressures. We compare the
performances of this mixing rule (called HVID model), coupled with th
e SRK equation of state and a reduced UNIQUAC model, with those of two
other equation of state mixing rules, one by Dahl and Michelsen (MHV2
) and another by Wong and Sandler (WS). Six binary systems are used in
this study, and we find that the errors in the predicted pressure wit
h the new mixing rule are, on the whole, less than those obtained when
using the MHV2 model. Compared with the WS mixing rule, the HVID mode
l performs slightly better.