Models of p-T-x1-x2 diagrams for ternary systems with vapor-liquid equilibria and continuous solutions in subcritical and supercritical regions

We consider model p-T-x1-x2 diagrams for ternary systems with continuous solutions in subcritical and supercritical vapor-liquid regions. Phase equilibria are analyzed with the parameters of state of the system varying as dependent on components’ volatilities. The methodology is described, and sample constructions of isobaric-isothermal diagrams and polythermal sections are made proceeding from p-T and T-x1-x2 projections of the four-dimensional diagram.