Reduction of Dispersion in Ultrasonically-Enhanced Micropacked Beds
Name
2018_Navarro-Brull_etal_IndEngChemRes_accepted.pdf
Description
Accepted version
Size
915.76 KB
Format
Adobe PDF
Checksum (MD5)
6b2a3938cb74b98fb0d389cdd612cb02
Author(s)
Navarro-Brull, Francisco J
Teixeira, Andrew R
Zhang, Jisong
Gómez, Roberto
Jensen, Klavs F
Date Issued
2018
Journal
Industrial and Engineering Chemistry Research
Publisher
American Chemical Society (ACS)
Version
Author's final manuscript
Abstract
© 2017 American Chemical Society. 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.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/ACS.IECR.7B03876
