INVESTIGATION OF PHASE-EQUILIBRIUM FOR TERNARY-SYSTEMS CONTAINING ETHANOL, WATER AND CARBON-DIOXIDE AT ELEVATED PRESSURES

Using a two-phase circulation apparatus, phase equilibrium data at ele vated pressures for ternary systems consisting of CO2, C2H5OH and H2O have been measured. A new method for the calculation of liquid phase c ompositions from P, T, and supercritical fluid phase compositions by t he modified Peng Robinson equation is proposed. The applicability of t his method is examined for our experimental data and literature data. As a result, it is confirmed that the method can represent the experim ental data with good accuracy.