Modeling of Droplet Separation Kinetics in Granular Bed Filters Based on MRI Measurements

In droplet separation by granular bed filters, the transient loading regime plays an important role because, for gases with low droplet concentrations, steady state will be reached only after a long time. A mathematical model describing this transient loading regime as well as steady state was devel...

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Bibliographic Details
Published in:Chemical engineering & technology 2006-07, Vol.29 (7), p.832-839
Main Authors: van Buren, V., von Garnier, A., Reimert, R.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Filters
Filtration
Kinetics
Liquid-liquid and fluid-solid mechanical separations
Modeling
Nuclear magnetic resonance (NMR)
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Summary:In droplet separation by granular bed filters, the transient loading regime plays an important role because, for gases with low droplet concentrations, steady state will be reached only after a long time. A mathematical model describing this transient loading regime as well as steady state was developed. It is based on differential balances for the dispersed droplets and for the separated liquid. The time‐dependent and spatially resolved liquid loading is calculated and compared with data obtained by magnetic resonance imaging (MRI), a noninvasive measuring technique. The good agreement between simulated and measured loading curves proves the general applicability of the model. The transient loading regime plays an important role in droplet separation in granular bed filters because, for gases with low droplet concentrations, steady state will be reached only after a long filtration time. A mathematical model was developed describing this transient loading regime as well as the steady state.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.200600036