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HÁJEK, O. BOUCHAL, P. CEJPEK, O. MALÝ, M. HÁJEK, J. PRINZ, F. ZAWADSKI, D. BLATKIEWICZ, M. JÍCHA, M.
Original Title
Characteristics of droplets formed on the outer surface of the rotating packed bed
Type
article in a collection out of WoS and Scopus
Language
English
Original Abstract
A rotating packed bed (RPB), as a device for mass transfer enhancement, can be divided into three main parts. An eye of a rotor, a packing, and an outer cavity. It has been reported that a contribution to the total mass transfer of the outer cavity can reach up to 30% of the whole device. Mass transfer is highly influenced by the droplet hydrodynamics and dimensions, hence the liquid dispersion from the outer surface of a metal foam packing was recorded with a high-speed camera. The recordings were analysed with an in-house MATLAB® code to determine the droplet dimensions, and with a PIVlab software to evaluate velocity fields. It has been found that the droplet dimensions and velocities were influenced primarily by a packing speed, as the higher packing speed resulted in a presence of the smaller droplets. Two peaks in histograms for the droplet diameters could be explained with a breakup theory of a liquid jet which breaks into large, mother, and small, satellite droplets. The droplet velocity corresponded to a peripheral velocity of the packing. A liquid flow rate influenced only the number of droplets dispersed from the packing.
Keywords
rotating packed bed, dispersion, droplet
Authors
HÁJEK, O.; BOUCHAL, P.; CEJPEK, O.; MALÝ, M.; HÁJEK, J.; PRINZ, F.; ZAWADSKI, D.; BLATKIEWICZ, M.; JÍCHA, M.
Released
29. 11. 2022
Pages from
1
Pages to
5
Pages count
BibTex
@inproceedings{BUT180420, author="Ondřej {Hájek} and Patrik {Rapta} and Ondřej {Cejpek} and Milan {Malý} and Jiří {Hájek} and František {Prinz} and Dawid {Zawadski} and Michal {Blatkiewicz} and Miroslav {Jícha}", title="Characteristics of droplets formed on the outer surface of the rotating packed bed", year="2022", pages="1--5" }