A METHOD FOR INCORPORATING EXCESS GIBBS ENERGY MODELS IN EQUATIONS OF STATE

被引：186

作者：

MICHELSEN, ML

机构：

[1] Inst for Kemiteknik, Lyngby, Denmark

来源：

FLUID PHASE EQUILIBRIA | 1990年 / 60卷 / 1-2期

关键词：

Equations of State;

D O I：

10.1016/0378-3812(90)85042-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A procedure for incorporating information from an excess Gibbs energy model into an equation of state is described. The gE model is used to define mixing rules for an equation of state mixture parameter in such a manner that the equation of state reproduces the vapour-liquid equilibrium predicted by the gE model at low temperatures. The resulting equation of state is fully consistent, performs reasonably at elevated temperatures and is computationally efficient. Typically, the cost of evaluating fugacity coefficients exceeds that of evaluating activity coefficients from the excess Gibbs energy model by 25-50%. © 1990.

引用

页码：47 / 58

页数：12

共 12 条

[1]

Barr-David F., 1959, J CHEM ENG DATA, V4, P107, DOI [10.1021/je60002a003, DOI 10.1021/JE60002A003]

[2]

BUTCHER KL, 1968, J APPL CHEM, V18, P100

[3] PREDICTION OF GAS SOLUBILITY AND VAPOR-LIQUID-EQUILIBRIA BY GROUP CONTRIBUTION [J].