Measurement of gas hold-up profiles by gamma ray tomography: effect of sparger design and height of dispersion in bubble columns

Radial variation of the gas hold-up was investigated in a bubble column using gamma ray tomography. Radial profiles were measured at three axial locations. In all the experiments water was liquid phase and air was gas phase. Superficial gas velocity was varied and perforated plates were used as spar...

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Bibliographic Details
Published in:Chemical engineering research & design 1999-06, Vol.77 (A4), p.303-317
Main Authors: Veera, U P, Joshi, J B
Format: Article
Language:English
Online Access:Get full text
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Summary:Radial variation of the gas hold-up was investigated in a bubble column using gamma ray tomography. Radial profiles were measured at three axial locations. In all the experiments water was liquid phase and air was gas phase. Superficial gas velocity was varied and perforated plates were used as spargers. The free area of sparger plates and the hole diameter were varied and the hold up profiles were found to depend strongly on the sparger design, at least near the sparger. Further, the height of dispersion was found to influence the hold up profiles near the sparger. All the results were correlated on the basis of drift flux model and parabolic hold up profile. (Original abstract)
ISSN:0263-8762
DOI:10.1205/026387699526232