Reduction of Dispersion in Ultrasonically-Enhanced Micropacked Beds
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http://hdl.handle.net/10045/72578
Title: | Reduction of Dispersion in Ultrasonically-Enhanced Micropacked Beds |
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Authors: | Navarro-Brull, Francisco J. | Teixeira, Andrew R. | Zhang, Jisong | Gómez, Roberto | Jensen, Klavs F. |
Research Group/s: | Grupo de Fotoquímica y Electroquímica de Semiconductores (GFES) |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Keywords: | Microreactor | Channeling | Capillary fingering | Ultrasound | Fluidization | Sonochemistry | Multiphase | Hydrodynamics |
Knowledge Area: | Química Física |
Issue Date: | 30-Nov-2017 |
Publisher: | American Chemical Society |
Citation: | Industrial & Engineering Chemistry Research. 2018, 57(1): 122-128. doi:10.1021/acs.iecr.7b03876 |
Abstract: | 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. |
Sponsor: | 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 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2017 American Chemical Society |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1021/acs.iecr.7b03876 |
Appears in Collections: | INV - GFES - Artículos de Revistas Research funded by the EU |
Files in This Item:
File | Description | Size | Format | |
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2018_Navarro-Brull_etal_IndEngChemRes_final.pdf | Versión final (acceso restringido) | 3,17 MB | Adobe PDF | Open Request a copy |
2018_Navarro-Brull_etal_IndEngChemRes_accepted.pdf | Accepted Manuscript (acceso abierto) | 940,74 kB | Adobe PDF | Open Preview |
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