Author/Authors :
Aghamiri، Seyed Foad نويسنده Chemical Engineering, Department, Faculty of Engineering, University of Isfahan, Isfahan, I.R. IRAN , , Modarres، Modarress, Hamid نويسنده Chemical Engineering Department, Amirkabir University of Technology, Tehran, I.R. IRAN , , Nickmand، Nickmand, Zahra نويسنده Chemical Engineering Department, Faculty of Engineering, University of Isfahan, Isfahan, I.R. IRAN , , Taheri، Hammed نويسنده Chemical Engineering Department, Faculty of Engineering, University of Isfahan, Isfahan, I.R. IRAN ,
Abstract :
In this study a simple and general chemical association theory is introduced.
The concept of infinite equilibrium model is re-examined and true mole fractions of associated species are calculated. The theory is applied to derive the distribution function of associated species. As a severe test the application of presented theory to the van der Waals mixture modelis introduced in order to perform Vapor-Liquid Equilibrium (VLE) calculations of aqueous ternary mixtures. The calculations are shown to be consistently improving the prediction over the non-associating case. Also, well known empirical models of NRTL and UNIQUAC are applied on the studied systems and their results are compared with proposed model.
