PHYSICAL AND MATHEMATICAL MODEL OF LIQUID AND GAS PHASES EQUILIBRIUM AT CONSTANT PRESSURE

Abstract

PCEAS is a forecasting molecular thermodynamic model based on the experimental data about pure components pa rameters. It can feature phase equilibrium of mixtures of different materials (liquid solvents; solid salts and polymers); and also allows to calculate parameters of eutectic and azeotropic points. During calculation the parameters of associa tion and salvation in liquid and in vapour are determined. The universality of the model is proved by the possibility of predicting liquid-solid and liquid-vapour equilibrium at constant pressure.

Keywords

• liquid-vapour equilibrium under isobaric requirements
• azeotrope
• parameter of solvation
• parameter of association