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Étude de l'absorption des gaz acides dans des solvants mixtes : développement d'une approche expérimentale originale et modélisation des données par une équation d'état d'électrolytes

Abstract : The aim of this study is the characterisation of VLE and chemical equilibria for the systems CO2/Diethanolamine-(DEA)/H2O/MeOH and CO2/Diethanolamine-(DEA)/H2O/PEG400.
The effect of physical solvent composition on CO2 absorption has been studied using four compositions (from 0% to 30wt% of alcohol with a fixed composition-30%- of DEA), the measurement being made at T=298.15K and at various CO2 loading (0 to 0.9).
The experimental measures concerned a both solubility data and liquid phase analysis was obtained. The effect of MeOH composition has been studied using the original experimental device developed previously (Sidi-Boumedine, 2003). For the system with PEG 400, a new experimental device excluding the pressure limitation of the precedent experimental device was developed.
The original data base obtained, including the new solubility data and the liquid phase composition, allows the modelling of the system CO2/DEA/H2O/MeOH using an electrolyte equation of state (Fürst, 1993) representing the equilibrium properties of the system and the liquid phase speciation.
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Submitted on : Monday, April 11, 2011 - 2:13:25 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:04 AM
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Anas Archane. Étude de l'absorption des gaz acides dans des solvants mixtes : développement d'une approche expérimentale originale et modélisation des données par une équation d'état d'électrolytes. Génie des procédés. École Nationale Supérieure des Mines de Paris, 2009. Français. ⟨pastel-00584954⟩

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