Documents disponibles écrits par cet auteur

Extents of reaction, mass transfer and flow for gas−liquid reaction systems / Nirav Bhatt in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7704–7717 Titre : Extents of reaction, mass transfer and flow for gas−liquid reaction systems Type de document : texte imprimé Auteurs : Nirav Bhatt, Auteur ; Michael Amrhein, Auteur ; Dominique Bonvin, Auteur Année de publication : 2010 Article en page(s) : pp 7704–7717 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Mass  transfer  Gas  liquid. Résumé : For gas−liquid reaction systems with inlet and outlet streams, this paper proposes a linear transformation of the numbers of moles into five distinct parts, namely, the extents of reaction, the extents of mass transfer, the extents of inlet flow, the extents of outlet flow, and invariants. Furthermore, we discuss several implications of being able to compute the various extents directly from the measured numbers of moles without knowledge of kinetic and mass-transfer rate expressions. The computation of extents is illustrated via the simulation of different reactor configurations for the chlorination of butanoic acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie902015t [article] Extents of reaction, mass transfer and flow for gas−liquid reaction systems [texte imprimé] / Nirav Bhatt, Auteur ; Michael Amrhein, Auteur ; Dominique Bonvin, Auteur . - 2010 . - pp 7704–7717. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7704–7717 Mots-clés : Mass  transfer  Gas  liquid. Résumé : For gas−liquid reaction systems with inlet and outlet streams, this paper proposes a linear transformation of the numbers of moles into five distinct parts, namely, the extents of reaction, the extents of mass transfer, the extents of inlet flow, the extents of outlet flow, and invariants. Furthermore, we discuss several implications of being able to compute the various extents directly from the measured numbers of moles without knowledge of kinetic and mass-transfer rate expressions. The computation of extents is illustrated via the simulation of different reactor configurations for the chlorination of butanoic acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie902015t

Incremental identification of reaction and mass – transfer kinetics using the concept of extents / Nirav Bhatt in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 12960–12974 Titre : Incremental identification of reaction and mass – transfer kinetics using the concept of extents Type de document : texte imprimé Auteurs : Nirav Bhatt, Auteur ; Michael Amrhein, Auteur ; Dominique Bonvin, Auteur Année de publication : 2012 Article en page(s) : pp. 12960–12974 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Mass  transfer  Kinetics Résumé : This paper proposes a variation of the incremental approach to identify reaction and mass-transfer kinetics from concentration measurements for both homogeneous and gas–liquid reaction systems. This incremental approach proceeds in two steps: (i) computation of the extents of reaction and mass transfer from concentration measurements without explicit knowledge of the reaction and mass-transfer rate expressions, and (ii) estimation of the rate parameters for each rate expression individually from the computed extents using the integral method. The novelty consists in using extents, thereby avoiding differentiation of measured concentrations. For the computation of extents, two cases are considered: a linear transformation is used if the concentrations of all liquid-phase species can be measured; otherwise, if the concentrations of only a subset of the liquid-phase species are available, an approach that uses additional measurements of flow rates and possibly gas-phase concentration is proposed. The incremental identification approach is illustrated in simulation via two reaction systems, namely, the homogeneous acetoacetylation of pyrrole and the gas–liquid chlorination of butanoic acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2007196 [article] Incremental identification of reaction and mass – transfer kinetics using the concept of extents [texte imprimé] / Nirav Bhatt, Auteur ; Michael Amrhein, Auteur ; Dominique Bonvin, Auteur . - 2012 . - pp. 12960–12974. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 12960–12974 Mots-clés : Mass  transfer  Kinetics Résumé : This paper proposes a variation of the incremental approach to identify reaction and mass-transfer kinetics from concentration measurements for both homogeneous and gas–liquid reaction systems. This incremental approach proceeds in two steps: (i) computation of the extents of reaction and mass transfer from concentration measurements without explicit knowledge of the reaction and mass-transfer rate expressions, and (ii) estimation of the rate parameters for each rate expression individually from the computed extents using the integral method. The novelty consists in using extents, thereby avoiding differentiation of measured concentrations. For the computation of extents, two cases are considered: a linear transformation is used if the concentrations of all liquid-phase species can be measured; otherwise, if the concentrations of only a subset of the liquid-phase species are available, an approach that uses additional measurements of flow rates and possibly gas-phase concentration is proposed. The incremental identification approach is illustrated in simulation via two reaction systems, namely, the homogeneous acetoacetylation of pyrrole and the gas–liquid chlorination of butanoic acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2007196