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Vapor-liquid equilibrium in extractive distillation of the acetone/methanol system using water as entrainer and pressure reduction / Diana C. Botía in Industrial & engineering chemistry research, Vol. 49 N° 13 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6176–6183 Titre : Vapor-liquid equilibrium in extractive distillation of the acetone/methanol system using water as entrainer and pressure reduction Type de document : texte imprimé Auteurs : Diana C. Botía, Auteur ; Diana C. Riveros, Auteur ; Pablo Ortiz, Auteur Année de publication : 2010 Article en page(s) : pp. 6176–6183 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Acetone/methanol  system Résumé : Displacement of the azeotropic composition of acetone/methanol system by using water as entrainer has been studied for different solvent:feed molar ratios (S/F = 1.0, 2.5, and 3.0) combined with pressure reduction, at 75.0 kPa. The vapor−liquid equilibrium data were compared to ASPEN Plus simulations using Wilson, NRTL, and UNIQUAC models. To determine the composition of the liquid and vapor phases, headspace-gas chromatography was used. For a solvent:feed molar ratio of 1.0 was obtained a complete azeotrope elimination. The obtained relative volatilities between 1.6 and 3.2 were for the assayed S/F ratios. Experimental data were well-represented by simulation with the UNIQUAC model, obtaining a vapor molar composition and temperature mean error of 0.009−0.027 and 0.80−1.70 K, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901702h [article] Vapor-liquid equilibrium in extractive distillation of the acetone/methanol system using water as entrainer and pressure reduction [texte imprimé] / Diana C. Botía, Auteur ; Diana C. Riveros, Auteur ; Pablo Ortiz, Auteur . - 2010 . - pp. 6176–6183. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6176–6183 Mots-clés : Acetone/methanol  system Résumé : Displacement of the azeotropic composition of acetone/methanol system by using water as entrainer has been studied for different solvent:feed molar ratios (S/F = 1.0, 2.5, and 3.0) combined with pressure reduction, at 75.0 kPa. The vapor−liquid equilibrium data were compared to ASPEN Plus simulations using Wilson, NRTL, and UNIQUAC models. To determine the composition of the liquid and vapor phases, headspace-gas chromatography was used. For a solvent:feed molar ratio of 1.0 was obtained a complete azeotrope elimination. The obtained relative volatilities between 1.6 and 3.2 were for the assayed S/F ratios. Experimental data were well-represented by simulation with the UNIQUAC model, obtaining a vapor molar composition and temperature mean error of 0.009−0.027 and 0.80−1.70 K, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901702h