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Simple procedure for optimal scale-up of fine chemical processes. II. nitration of 4-chlorobenzotrifluoride / Francesco Maestri in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1316–1324 Titre : Simple procedure for optimal scale-up of fine chemical processes. II. nitration of 4-chlorobenzotrifluoride Type de document : texte imprimé Auteurs : Francesco Maestri, Auteur ; Sabrina Copelli, Auteur ; Renato Rota, Auteur Année de publication : 2009 Article en page(s) : p. 1316–1324 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Chemical  Processes  Industrial  reactor Résumé : In this work, a simple and general procedure for optimally scaling-up exothermic semibatch processes has been applied to the analysis of a nitration reaction performed in the agrochemical industry for the production of an important class of herbicides. Such a reaction is performed in indirectly cooled semibatch reactors in which the species to be nitrated is added to a mixture of sulfuric and nitric acid, forming a heterogeneous (liquid−liquid) system. Adiabatic calorimetric experiments performed in an ARC equipment showed that the reaction in question belongs to the most critical class of exothermic reaction processes, for which maximum attainable temperature due to synthesis reaction (MTSR) is, at the same time, higher than system decomposition temperature and lower than boiling temperature of the reaction mass. It has been verified, through reaction calorimetry experiments (performed in an RC1 equipment), that the optimization−scale-up procedure previously developed allows, with minimum calculation and experimental effort, both for a selection, at laboratory scale, of operating conditions characterized by a rapid coreactant consumption and for their safe scale-up, maximizing industrial reactor productivity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800466n [article] Simple procedure for optimal scale-up of fine chemical processes. II. nitration of 4-chlorobenzotrifluoride [texte imprimé] / Francesco Maestri, Auteur ; Sabrina Copelli, Auteur ; Renato Rota, Auteur . - 2009 . - p. 1316–1324. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1316–1324 Mots-clés : Chemical  Processes  Industrial  reactor Résumé : In this work, a simple and general procedure for optimally scaling-up exothermic semibatch processes has been applied to the analysis of a nitration reaction performed in the agrochemical industry for the production of an important class of herbicides. Such a reaction is performed in indirectly cooled semibatch reactors in which the species to be nitrated is added to a mixture of sulfuric and nitric acid, forming a heterogeneous (liquid−liquid) system. Adiabatic calorimetric experiments performed in an ARC equipment showed that the reaction in question belongs to the most critical class of exothermic reaction processes, for which maximum attainable temperature due to synthesis reaction (MTSR) is, at the same time, higher than system decomposition temperature and lower than boiling temperature of the reaction mass. It has been verified, through reaction calorimetry experiments (performed in an RC1 equipment), that the optimization−scale-up procedure previously developed allows, with minimum calculation and experimental effort, both for a selection, at laboratory scale, of operating conditions characterized by a rapid coreactant consumption and for their safe scale-up, maximizing industrial reactor productivity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800466n

Simple procedure for optimally scaling-up fine chemical processes. I. practical tools / Francesco Maestri in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1307–1315 Titre : Simple procedure for optimally scaling-up fine chemical processes. I. practical tools Type de document : texte imprimé Auteurs : Francesco Maestri, Auteur ; Sabrina Copelli, Auteur ; Renato Rota, Auteur Année de publication : 2009 Article en page(s) : p. 1307–1315 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Chemical  processes  Industrial  reactor Résumé : A simple and general scale-up procedure, based on boundary and temperature diagram safety criteria for exothermic semibatch reactors (SBRs), has been developed. Such a procedure is based on a few graphical correlations that allow end users, dealing with homogeneous as well as heterogeneous SBRs (with or without autocatalytic behavior), an easy selection of safe operating conditions at the laboratory scale and for their scale-up to the industrial one, maximizing at the same time the industrial reactor productivity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800465d [article] Simple procedure for optimally scaling-up fine chemical processes. I. practical tools [texte imprimé] / Francesco Maestri, Auteur ; Sabrina Copelli, Auteur ; Renato Rota, Auteur . - 2009 . - p. 1307–1315. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1307–1315 Mots-clés : Chemical  processes  Industrial  reactor Résumé : A simple and general scale-up procedure, based on boundary and temperature diagram safety criteria for exothermic semibatch reactors (SBRs), has been developed. Such a procedure is based on a few graphical correlations that allow end users, dealing with homogeneous as well as heterogeneous SBRs (with or without autocatalytic behavior), an easy selection of safe operating conditions at the laboratory scale and for their scale-up to the industrial one, maximizing at the same time the industrial reactor productivity. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800465d