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Improved drying in a pulsation-assisted fluidized bed / Ali Akhavan in Industrial & engineering chemistry research, Vol. 48 N°1 (Janvier 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°1 (Janvier 2009) . - P. 302-309 Titre : Improved drying in a pulsation-assisted fluidized bed Type de document : texte imprimé Auteurs : Ali Akhavan, Editeur scientifique ; J. Ruud van Ommen, Editeur scientifique ; John Nijenhuis, Editeur scientifique Année de publication : 2009 Article en page(s) : P. 302-309 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Pulsation-assisted  fluidized  Gas  flow Résumé : Gas flow pulsation was employed to improve the drying of porous pharmaceutical granules in a cylindrical fluidized bed. In our approach, a fraction of the total flow was oscillating intermittently and periodically, typically at 3 Hz during 2 min and remaining constant during the other 2 min of each 4 min cycle. It was found that such pulsation-assisted fluidization not only shortened the total drying time but also enhanced homogeneity. A transition in fluidization behavior, reflected by a distinct transition in the bed dominant frequencies, was observed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800458h [article] Improved drying in a pulsation-assisted fluidized bed [texte imprimé] / Ali Akhavan, Editeur scientifique ; J. Ruud van Ommen, Editeur scientifique ; John Nijenhuis, Editeur scientifique . - 2009 . - P. 302-309. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°1 (Janvier 2009) . - P. 302-309 Mots-clés : Pulsation-assisted  fluidized  Gas  flow Résumé : Gas flow pulsation was employed to improve the drying of porous pharmaceutical granules in a cylindrical fluidized bed. In our approach, a fraction of the total flow was oscillating intermittently and periodically, typically at 3 Hz during 2 min and remaining constant during the other 2 min of each 4 min cycle. It was found that such pulsation-assisted fluidization not only shortened the total drying time but also enhanced homogeneity. A transition in fluidization behavior, reflected by a distinct transition in the bed dominant frequencies, was observed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800458h