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Computational fluid dynamic investigation of change of volumetric flow in fluidized-bed reactors / Tingwen Li in Industrial & engineering chemistry research, Vol. 49 N° 15 (Août 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 15 (Août 2010) . - pp 6780–6789 Titre : Computational fluid dynamic investigation of change of volumetric flow in fluidized-bed reactors Type de document : texte imprimé Auteurs : Tingwen Li, Auteur ; Andrés Mahecha-Botero, Auteur ; John R. Grace, Auteur Année de publication : 2010 Article en page(s) : pp 6780–6789 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Fluid  Dynamic  Volumetric  flow. Résumé : The modeling and characterization of fluidized-bed reactors is challenging due to the variety of interrelated phenomena during the fluidization process. A key feature affecting gas−solid fluidized-bed reactors is the distribution of gas flow between phases. To address this flow distribution, conventional reactor modeling and computational fluid dynamics have been proposed in the literature. However, very little attention has been given to cases where the fluid volume changes due to factors such as variation in the total molar flow due to reaction, change of phase, utilization of membranes, and changes in temperature and pressure. This article investigates change in volumetric flow based on computational fluid dynamics. It is shown that a decrease in volumetric flow can profoundly influence the hydrodynamics, especially for smaller particles, whereas an increase in volumetric flow is accommodated with limited consequences, especially for larger particles. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901676d [article] Computational fluid dynamic investigation of change of volumetric flow in fluidized-bed reactors [texte imprimé] / Tingwen Li, Auteur ; Andrés Mahecha-Botero, Auteur ; John R. Grace, Auteur . - 2010 . - pp 6780–6789. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 15 (Août 2010) . - pp 6780–6789 Mots-clés : Fluid  Dynamic  Volumetric  flow. Résumé : The modeling and characterization of fluidized-bed reactors is challenging due to the variety of interrelated phenomena during the fluidization process. A key feature affecting gas−solid fluidized-bed reactors is the distribution of gas flow between phases. To address this flow distribution, conventional reactor modeling and computational fluid dynamics have been proposed in the literature. However, very little attention has been given to cases where the fluid volume changes due to factors such as variation in the total molar flow due to reaction, change of phase, utilization of membranes, and changes in temperature and pressure. This article investigates change in volumetric flow based on computational fluid dynamics. It is shown that a decrease in volumetric flow can profoundly influence the hydrodynamics, especially for smaller particles, whereas an increase in volumetric flow is accommodated with limited consequences, especially for larger particles. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901676d