Reduction of Dispersion in Ultrasonically-Enhanced Micropacked Beds
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http://hdl.handle.net/10045/72578
Título: | Reduction of Dispersion in Ultrasonically-Enhanced Micropacked Beds |
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Autor/es: | Navarro-Brull, Francisco J. | Teixeira, Andrew R. | Zhang, Jisong | Gómez, Roberto | Jensen, Klavs F. |
Grupo/s de investigación o GITE: | Grupo de Fotoquímica y Electroquímica de Semiconductores (GFES) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Microreactor | Channeling | Capillary fingering | Ultrasound | Fluidization | Sonochemistry | Multiphase | Hydrodynamics |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 30-nov-2017 |
Editor: | American Chemical Society |
Cita bibliográfica: | Industrial & Engineering Chemistry Research. 2018, 57(1): 122-128. doi:10.1021/acs.iecr.7b03876 |
Resumen: | Channeling of gas can reduce mass transfer performance in multiphase micropacked-bed reactors. Viscous and capillary forces cause this undesired and often unpredictable phenomenon in systems with catalyst particle sizes of hundreds of micrometers. In this work, we acoustically modify flow in a micropacked-bed reactor to reduce gas channeling by applying high-power sonication at low ultrasonic frequencies (∼40 kHz). Experimental residence time distributions reveal two orders of magnitude reduction in dispersion with ultrasound, allowing for nearly plug-flow behavior at high flow rates in the bed. Sonication appears to partially fluidize the packed-bed under pressurized cocurrent two-phase flow, effectively improving dispersion characteristics. |
Patrocinador/es: | This research was partially funded by the EU project MAPSYN: Microwave, Acoustic and Plasma SYNtheses, under Grant CPIP 309376 of the European Union Seventh Framework Program. |
URI: | http://hdl.handle.net/10045/72578 |
ISSN: | 0888-5885 (Print) | 1520-5045 (Online) |
DOI: | 10.1021/acs.iecr.7b03876 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 American Chemical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1021/acs.iecr.7b03876 |
Aparece en las colecciones: | INV - GFES - Artículos de Revistas Investigaciones financiadas por la UE |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2018_Navarro-Brull_etal_IndEngChemRes_final.pdf | Versión final (acceso restringido) | 3,17 MB | Adobe PDF | Abrir Solicitar una copia |
2018_Navarro-Brull_etal_IndEngChemRes_accepted.pdf | Accepted Manuscript (acceso abierto) | 940,74 kB | Adobe PDF | Abrir Vista previa |
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