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Thermodynamic evaluation of binary vapour-liquid equilibria

✍ Scribed by H.A.C. Thijssen


Publisher
Elsevier Science
Year
1955
Tongue
English
Weight
445 KB
Volume
4
Category
Article
ISSN
0009-2509

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✦ Synopsis


An exact graphical method for the evaluation of vapour-liquid equilibrium data in a binary mixture from boiling point composition data is described. The variation of the activity coefficients with composition is obtained by successive application of the exact Duhem equation to a graph relating ln yr, and In ya with z as parameter. Purther, the test for internal consistency of vapour-liquid equilibrium data as introduced by HARINGT~N is extended to p constant, T variable and corrected for nonideality of the vapour phase. The methods are applied to vapourliquid equilibrium data of the binary system methylryclohexane-toluene. Rkrmd--L'auteur d&it une mdthode graphique exacte pour verifier a partir de la courbe d'ebullition d'un melange binaire, les donnees de l'equilibre liquide-vapeur. 11 obtient la variation des coefficients d'activite avec la composition par application de la forme exacte de l'dquation de 'DUHEM B un graphique reliant In yr et In ys avec x commr paramtim. En outres, il &end le test introduit par HARINGTON qui apprdcie la qua1it.d intrinkque des don&s de l'dquilibre liquide vapeur, ir p constant et T variable et le corrige dans le cas de non id&lit6 de la phase vapeur. 11 applique cette methode aux don&es de l'equilibre liquide-vapeur du systeme binaire methyl-cyrlohexane -tolu&ne.


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