Non-random two-liquid model

The Non-Random Two-Liquid (NRTL) model is a thermodynamic model used to describe the phase behavior of multi-component mixtures, particularly liquid-liquid equilibrium (LLE) in non-ideal solutions. Developed in the context of chemical engineering and related fields, the model aims to provide a more accurate representation of the interactions between different species in a mixture compared to simpler models like Raoult's law or the Ideal Solution model.