TY - JOUR
T1 - Simultaneous calculations of VLE and saturated liquid and vapor volumes by means of a 3P1T cubic EOS
AU - Yu, Jin Min
AU - Lu, Benjamin C.Y.
AU - Iwai, Yoshio
N1 - Funding Information:
ACKNOWLEDGMENT The authors are indebted to the Natural Research Council of Canada for financial support.
PY - 1987
Y1 - 1987
N2 - The three-parameter cubic equation of state with one parameter temperature-dependent (3P1T), P = RT/(V - b) - a(T)/[V(V + c) + b(3V + c)], recently developed for asymmetric mixture density calculations for nonpolar substances (Yu and Lu, 1987), has been applied to VLE calculations. The binary interaction parameter k12 obtained from the conventional random VDW mixing rule for the mixture parameter a has been used for the prediction of volumes of saturated liquid (Vℓ) and saturated vapor (Vν) at the conditions of the VLE data. The 3P1T equation is as capable for VLE calculations as the Soave-Redlich-Kwong, the Peng-Robinson, the Schmidt-Wenzel and the translated Peng-Robinson equations, but it yields lower Vℓ deviations than these equations. The improvement is more evident for highly asymmetric mixtures. The suitability of the form of the equation for representing Vℓ of nonpolar compounds over a wide range of molecular weight is further demonstrated.
AB - The three-parameter cubic equation of state with one parameter temperature-dependent (3P1T), P = RT/(V - b) - a(T)/[V(V + c) + b(3V + c)], recently developed for asymmetric mixture density calculations for nonpolar substances (Yu and Lu, 1987), has been applied to VLE calculations. The binary interaction parameter k12 obtained from the conventional random VDW mixing rule for the mixture parameter a has been used for the prediction of volumes of saturated liquid (Vℓ) and saturated vapor (Vν) at the conditions of the VLE data. The 3P1T equation is as capable for VLE calculations as the Soave-Redlich-Kwong, the Peng-Robinson, the Schmidt-Wenzel and the translated Peng-Robinson equations, but it yields lower Vℓ deviations than these equations. The improvement is more evident for highly asymmetric mixtures. The suitability of the form of the equation for representing Vℓ of nonpolar compounds over a wide range of molecular weight is further demonstrated.
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U2 - 10.1016/0378-3812(87)80052-3
DO - 10.1016/0378-3812(87)80052-3
M3 - Article
AN - SCOPUS:0023435722
SN - 0378-3812
VL - 37
SP - 207
EP - 222
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - C
ER -