Prediction of vapor–liquid equilibria for asymmetric systems at low and high pressures with the PSRK model

The idea of effective Rk*, Qk* for the subgroups CH3, CH2, CH and C of UNIFAC in PSRK is proposed. Based on this idea, an empirical expression has been developed, allowing the reliable prediction of vapor–liquid equilibria for asymmetric systems at low and high pressures with the help of the PSRK model.