Etude et modélisation des équilibres liquide/solide et solide/solide dans des mélanges binaires de n-alcanes linéaires et des mélanges multiconstituants

Abstract : Correlations between thermodynamic properties and the carbon atom number of pure alkanes are established from literature data in order to carry out the phase equilibrium's modelling. The liquid and the alpha RII behave as an ideal mixture and the Wilson's model reproduce the equilibrium line between the ordered solid and the disordered one, considering the disorder of the disordered phase for consecutive n-alkane's binary mixture. For paraffinic waxes, the model of ideal solution for the liquid and alpha RII phases overestimate the wax's cloud point. However, the distribution of the liquid phase's alkanes and the wax's solidification domain can be estimated from this model. The solid phase's disorder, as well as the aromatic addition to the mixture make the wax more soluble in a solvent
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Rijalalaina Rakotosaona. Etude et modélisation des équilibres liquide/solide et solide/solide dans des mélanges binaires de n-alcanes linéaires et des mélanges multiconstituants. Autre. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL120N⟩. ⟨tel-01752509⟩

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