influance de la methode d'optimisation et de la variation du coefficient de repartition non aleatior sur la fiabilite du modele nrtl

Abstract

The experimental measurements of phase equilibrium data are not always easy to perform. Moreover, whatever the used method, these measures are laborious and expensive for a large number of systems. It is therefore essential to have reliable thermodynamics models able to predicting phase equilibrium data. As a result, the improvement and study of the reliability of these models has been the aim of many research. This work is devoted to the study of the influence of the optimization method and the influence of the variation of non-random distribution coefficients (α) on the reliability of the NRTL model for the prediction of ternary liquid-liquid equilibria. Comparing with the DECHEMA data base, the results obtained showed a good representation of the considered systems, which confirms the accuracy of the values of the non-random distribution coefficients and estimated interaction parameters as well as the robustness of the used optimization method .