THEORY;
EQUATION OF STATE;
MIXING RULES;
CUBIC;
EMPIRICAL;
EXCESS FUNCTIONS;
GROUP CONTRIBUTION;
VAPOR LIQUID EQUILIBRIA;
LCVM MODEL;
D O I:
10.1016/0378-3812(94)85005-4
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
A new equation of state/excess Gibbs energy model, LCVM, has been developed. This work provides a theoretical justification for the mixing rule used in the LCVM model for the parameter alpha(= a/bRT, where a and b are cubic equation of state parameters). This is accomplished by determining standard states for pure components in a mixture, as well as a reference pressure, where the excess Gibbs energy expression obtained from the equation of state and the excess Gibbs energy model used give equal values.