Extractive distillation of acetone/methanol mixture using water as entrainer / Iván D. Gil in Industrial & engineering chemistry research, Vol. 48 N° 10 (Mai 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4858–4865 Titre : Extractive distillation of acetone/methanol mixture using water as entrainer Type de document : texte imprimé Auteurs : Iván D. Gil, Auteur ; Diana C. Botía, Auteur ; Pablo Ortiz, Auteur Année de publication : 2009 Article en page(s) : pp. 4858–4865 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Acetone-methanol Extractive distillation Vapor−  liquid equilibrium UNIQUAC model Résumé : The acetone−methanol extractive distillation using water as an entrainer was simulated on Aspen Plus software package using rigorous methods. Calculation of the vapor−liquid equilibrium for the ternary system was done by the UNIQUAC model according to the experimental results obtained in a previous work. The effects of the solvent to feed molar ratio, reflux ratio, feed stage, feed solvent stage, and solvent feed temperature were studied to obtain the best design of the extractive distillation column with minimal energy requirements. The most appropriate configuration is 52 theoretical stages. The best binary mixture and entrainer feeding stages were obtained at 48 and 22 respectively with a solvent to feed molar and reflux ratio of 2.0 and 5.0, respectively. The simulation results show the effect of the main variables on the extractive distillation process. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801637h [article] Extractive distillation of acetone/methanol mixture using water as entrainer [texte imprimé] / Iván D. Gil, Auteur ; Diana C. Botía, Auteur ; Pablo Ortiz, Auteur . - 2009 . - pp. 4858–4865. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 10 (Mai 2009) . - pp. 4858–4865 Mots-clés : Acetone-methanol Extractive distillation Vapor−  liquid equilibrium UNIQUAC model Résumé : The acetone−methanol extractive distillation using water as an entrainer was simulated on Aspen Plus software package using rigorous methods. Calculation of the vapor−liquid equilibrium for the ternary system was done by the UNIQUAC model according to the experimental results obtained in a previous work. The effects of the solvent to feed molar ratio, reflux ratio, feed stage, feed solvent stage, and solvent feed temperature were studied to obtain the best design of the extractive distillation column with minimal energy requirements. The most appropriate configuration is 52 theoretical stages. The best binary mixture and entrainer feeding stages were obtained at 48 and 22 respectively with a solvent to feed molar and reflux ratio of 2.0 and 5.0, respectively. The simulation results show the effect of the main variables on the extractive distillation process. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801637h

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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]  inIndustrial & 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

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