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Influence of flow regime on mass transfer in different types of microchannels / Madhvanand N. Kashid in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6906-6914 Titre : Influence of flow regime on mass transfer in different types of microchannels Type de document : texte imprimé Auteurs : Madhvanand N. Kashid, Auteur ; Albert Renken, Auteur ; Lioubov Kiwi-Minsker, Auteur Année de publication : 2011 Article en page(s) : pp. 6906-6914 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Mass  transfer  Flow  regime Résumé : The performance of microstructured reactors (or microchannels) for mass-transfer-controlled liquid―liquid reactions depends on flow regimes that define the specific interfacial area for the mass transfer. In the present work, experiments were carried out to investigate the two phase-flow regimes and the mass transfer at relatively high throughput for a single microchannel (of 1―18 mL/min) in five generic microchannel designs (with and without structured internal surfaces), using a nonreacting water-acetone-toluene system. When the flow results were analyzed collectively in all microchannels, six different flow regimes such as slug, slug-drop, deformed interface, parallel/ annular, slug-dispersed, and dispersed flow were observed. The mass-transfer comparison shows that the microchannel with structured internal surfaces shows better performance, because it creates a very fine dispersion, providing high interfacial area, compared to other microchannels. Finally, the mass-transfer data were correlated, which can be used for a priori predictions of mass-transfer rates in microchannels, DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199908 [article] Influence of flow regime on mass transfer in different types of microchannels [texte imprimé] / Madhvanand N. Kashid, Auteur ; Albert Renken, Auteur ; Lioubov Kiwi-Minsker, Auteur . - 2011 . - pp. 6906-6914. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 6906-6914 Mots-clés : Mass  transfer  Flow  regime Résumé : The performance of microstructured reactors (or microchannels) for mass-transfer-controlled liquid―liquid reactions depends on flow regimes that define the specific interfacial area for the mass transfer. In the present work, experiments were carried out to investigate the two phase-flow regimes and the mass transfer at relatively high throughput for a single microchannel (of 1―18 mL/min) in five generic microchannel designs (with and without structured internal surfaces), using a nonreacting water-acetone-toluene system. When the flow results were analyzed collectively in all microchannels, six different flow regimes such as slug, slug-drop, deformed interface, parallel/ annular, slug-dispersed, and dispersed flow were observed. The mass-transfer comparison shows that the microchannel with structured internal surfaces shows better performance, because it creates a very fine dispersion, providing high interfacial area, compared to other microchannels. Finally, the mass-transfer data were correlated, which can be used for a priori predictions of mass-transfer rates in microchannels, DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199908