Measurement and Modeling of Bubble and Dew Points of the Carbon Dioxide + Tetrahydrofuran + Water System

The bubble- and dew- point behavior of the carbon dioxide (1) + tetrahydrofuran (2) + water (3) system
has been studied. Pressure-temperature isopleths were measured for the ternary system at x1 ) 0.01, 0.02,
0.03, 0.04, 0.09, and 0.27 at a constant mole fraction of tetrahydrofuran, x2 ) 0.05. The bubble- and dewpoint
lines for the ternary systems were also measured at x2 ) 0.01, 0.03, 0.05, and 0.07 for fixed composition
of carbon dioxide (x1) at 0.04 mol fraction and at x2 ) 0.01, 0.03, 0.05, 0.06, and 0.09 for a fixed composition
of carbon dioxide (x1) at 0.09, respectively. The pressure and temperature range from (1 to 6) MPa and (280
to 300) K, respectively. The experimental results for the ternary system have been modeled using the predictive
Peng-Robinson-Stryjek-Vera (PRSV) equation of state with the Huron-Vidal-Orbey-Sandler (HVOS)
mixing rule and the universal quasi-chemical activity coefficient (UNIQUAC) GE model. Excellent agreements
have been found between the experimental and the predicted values of the bubble and dew points of the
ternary system throughout the composition range studied.