Investigation of phase equilibrium for ternary systems containing ethanol, water and carbon dioxide at elevated pressures

Abstract

Abstract Using a two-phase circulation apparatus, phase equilibrium data at elevated pressures for ternary systems consisting of CO 2 , C 2 H 5 OH and H 2 O have been measured. A new method for the calculation of liquid phase compositions from P, T , and supercritical fluid phase compositions by the modified Peng-Robinson equation is proposed. The applicability of this method is examined for our experimental data and literature data. As a result, it is confirmed that the method can represent the experimental data with good accuracy.