Documents disponibles écrits par cet auteur

Crystal shape engineering / Michael A. Lovette ; Andrea Robben Browning ; Derek W. Griffin in Industrial & engineering chemistry research, Vol. 47 n°24 (Décembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°24 (Décembre 2008) . - p. 9812–9833 Titre : Crystal shape engineering Type de document : texte imprimé Auteurs : Michael A. Lovette, Auteur ; Andrea Robben Browning, Auteur ; Derek W. Griffin, Auteur Année de publication : 2009 Article en page(s) : p. 9812–9833 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Industrial  crystallization Résumé : In an industrial crystallization process, crystal shape strongly influences end-product quality and functionality, as well as downstream processing. In addition, nucleation events, solvent effects, and polymorph selection play critical roles in both the design and operation of a crystallization plant and the patentability of the product and process. Therefore, investigation of these issues, with respect to a priori prediction, is (and will continue to be) an important avenue of research. In this review, we discuss the state-of-the-art in modeling crystallization processes over a range of length scales relevant to nucleation through process design. We also identify opportunities for continued research and specific areas where significant advancements are needed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800900f [article] Crystal shape engineering [texte imprimé] / Michael A. Lovette, Auteur ; Andrea Robben Browning, Auteur ; Derek W. Griffin, Auteur . - 2009 . - p. 9812–9833. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°24 (Décembre 2008) . - p. 9812–9833 Mots-clés : Industrial  crystallization Résumé : In an industrial crystallization process, crystal shape strongly influences end-product quality and functionality, as well as downstream processing. In addition, nucleation events, solvent effects, and polymorph selection play critical roles in both the design and operation of a crystallization plant and the patentability of the product and process. Therefore, investigation of these issues, with respect to a priori prediction, is (and will continue to be) an important avenue of research. In this review, we discuss the state-of-the-art in modeling crystallization processes over a range of length scales relevant to nucleation through process design. We also identify opportunities for continued research and specific areas where significant advancements are needed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800900f

Effect of competing reversible reactions on optimal operating policies for plants with recycle / Derek W. Griffin in Industrial & engineering chemistry research, Vol. 48 N° 17 (Septembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8037–8047 Titre : Effect of competing reversible reactions on optimal operating policies for plants with recycle Type de document : texte imprimé Auteurs : Derek W. Griffin, Auteur ; Duncan A. Mellichamp, Auteur ; Michael F. Doherty, Auteur Année de publication : 2009 Article en page(s) : pp. 8037–8047 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Optimal  steady-state  operating  policies  Plants  with  recycle  Reversible  reactions Résumé : A simple classification procedure for determining optimal steady-state operating policies for plants with recycle has recently been developed by Griffin et al. to cover complex process chemistries. (Griffin, D. W.; Mellichamp, D. A.; Doherty, M. F. AIChE J. 2008, 54, 2597). This procedure classifies a process chemistry into one of two groups of operating policies based solely on the reaction kinetics. The optimal operating policy for a bounded chemistry is to operate the reactor completely full for all production rates while a nonbounded chemistry may have a variable reactor volume subject to system constraints. The current work focuses on process chemistries with reversible reactions and demonstrates that the optimal operating policy can change depending on which reaction(s) is(are) reversible and the magnitude of the equilibrium constant(s). Process chemistries with a reversible desired reaction also exhibit multiple steady-states, but only one of the steady-states corresponds to feasible operating conditions. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801482z [article] Effect of competing reversible reactions on optimal operating policies for plants with recycle [texte imprimé] / Derek W. Griffin, Auteur ; Duncan A. Mellichamp, Auteur ; Michael F. Doherty, Auteur . - 2009 . - pp. 8037–8047. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 17 (Septembre 2009) . - pp. 8037–8047 Mots-clés : Optimal  steady-state  operating  policies  Plants  with  recycle  Reversible  reactions Résumé : A simple classification procedure for determining optimal steady-state operating policies for plants with recycle has recently been developed by Griffin et al. to cover complex process chemistries. (Griffin, D. W.; Mellichamp, D. A.; Doherty, M. F. AIChE J. 2008, 54, 2597). This procedure classifies a process chemistry into one of two groups of operating policies based solely on the reaction kinetics. The optimal operating policy for a bounded chemistry is to operate the reactor completely full for all production rates while a nonbounded chemistry may have a variable reactor volume subject to system constraints. The current work focuses on process chemistries with reversible reactions and demonstrates that the optimal operating policy can change depending on which reaction(s) is(are) reversible and the magnitude of the equilibrium constant(s). Process chemistries with a reversible desired reaction also exhibit multiple steady-states, but only one of the steady-states corresponds to feasible operating conditions. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801482z