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Entrainer - based reactive distillation for esterification of glycerol with acetic acid / Amit Hasabnis in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9058–9067 Titre : Entrainer - based reactive distillation for esterification of glycerol with acetic acid Type de document : texte imprimé Auteurs : Amit Hasabnis, Auteur ; Sanjay Mahajani, Auteur Année de publication : 2010 Article en page(s) : pp. 9058–9067 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Reactive  distillation  Esterification  Glycerol Résumé : The applicability of reactive distillation for esterification of glycerol with acetic acid in the presence of Amberlyst-15 as catalyst and ethylene dichloride as an entrainer is evaluated through experiments and simulation. The reaction is studied in both semibatch and continuous reactive distillation systems. The effect of different parameters such as entrainer amount, catalyst loading, and reboiler duty is studied. The results indicate that entrainer-based semibatch reactive distillation can enhance the selectivity toward triacetin to about 100%, which is much greater than that offered by any conventional reactor with stoichiometric mole ratio of reactants. Simulations for both semibatch and continuous reactive distillation are performed, and results agree reasonably well with those obtained by experiments. The best possible design and operating parameters are obtained through detailed simulation using an experimentally validated model. A column configuration is recommended for a continuous process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100937p [article] Entrainer - based reactive distillation for esterification of glycerol with acetic acid [texte imprimé] / Amit Hasabnis, Auteur ; Sanjay Mahajani, Auteur . - 2010 . - pp. 9058–9067. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9058–9067 Mots-clés : Reactive  distillation  Esterification  Glycerol Résumé : The applicability of reactive distillation for esterification of glycerol with acetic acid in the presence of Amberlyst-15 as catalyst and ethylene dichloride as an entrainer is evaluated through experiments and simulation. The reaction is studied in both semibatch and continuous reactive distillation systems. The effect of different parameters such as entrainer amount, catalyst loading, and reboiler duty is studied. The results indicate that entrainer-based semibatch reactive distillation can enhance the selectivity toward triacetin to about 100%, which is much greater than that offered by any conventional reactor with stoichiometric mole ratio of reactants. Simulations for both semibatch and continuous reactive distillation are performed, and results agree reasonably well with those obtained by experiments. The best possible design and operating parameters are obtained through detailed simulation using an experimentally validated model. A column configuration is recommended for a continuous process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100937p

Transacetalization of Glycerol with Methylal by Reactive Distillation / Amit Hasabnis in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13021-13036 Titre : Transacetalization of Glycerol with Methylal by Reactive Distillation Type de document : texte imprimé Auteurs : Amit Hasabnis, Auteur ; Sanjay Mahajani, Auteur Année de publication : 2012 Article en page(s) : pp. 13021-13036 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Distillation  with  reactio Résumé : The applicability of reactive distillation (RD) for the transacetalization of glycerol with methylal in the presence of Amberlyst-15 is studied by experiments and simulation. On the basis of the batch kinetic runs a pseudohomogeneous kinetic model is proposed. The experiments are performed on a continuous reactive distillation column and are compared with the predictions of the equilibrium stage model. Various feasible configurations of reactive distillation are identified and the experimentally validated simulator is used to investigate the effect of different design and operating parameters such as number of rectifying stages, stripping stages, feed mole ratio, followed duty, etc on the performance in each case. The RD process alternatives and the conventional process of reaction followed by distillation are compared. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451451 [article] Transacetalization of Glycerol with Methylal by Reactive Distillation [texte imprimé] / Amit Hasabnis, Auteur ; Sanjay Mahajani, Auteur . - 2012 . - pp. 13021-13036. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13021-13036 Mots-clés : Distillation  with  reactio Résumé : The applicability of reactive distillation (RD) for the transacetalization of glycerol with methylal in the presence of Amberlyst-15 is studied by experiments and simulation. On the basis of the batch kinetic runs a pseudohomogeneous kinetic model is proposed. The experiments are performed on a continuous reactive distillation column and are compared with the predictions of the equilibrium stage model. Various feasible configurations of reactive distillation are identified and the experimentally validated simulator is used to investigate the effect of different design and operating parameters such as number of rectifying stages, stripping stages, feed mole ratio, followed duty, etc on the performance in each case. The RD process alternatives and the conventional process of reaction followed by distillation are compared. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451451