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Hydrodynamics, mixing and selectivity in a partitioned bubble column
Published in
2012
Volume: 187
   
Pages: 261 - 274
Abstract
In this work, the hydrodynamic behaviour in a partitioned bubble column is analyzed. Gas is introduced at the lower right corner and it rises through the liquid in the form of a plume. This induces a circulation in the liquid phase. The velocity field is predicted using CFD simulations based on an Euler-Eulerian (EE) approach and validated experimentally using PIV. Mixing between the liquids in the two halves of the tank is studied by analyzing the progress of the fast neutralization reaction between HCl and NaOH. It is found that mixing is slowed down when the higher viscosity fluid is present in the half containing the gas source. This is understood by analyzing the velocity fields using PIV. It is shown that mixing can be controlled by changing the gas flow-rate. A consecutive-competitive reaction is studied and the effect of mixing on selectivity is analyzed. © 2012 Elsevier B.V.
About the journal
JournalChemical Engineering Journal
ISSN13858947
Open AccessNo
Concepts (16)
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    Cfd simulations
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    CONSECUTIVE-COMPETITIVE REACTION
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    EULER-EULERIAN APPROACH
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    Gas sources
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    Liquid phase
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    NEUTRALIZATION REACTION
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    Particle image velocimetry
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    PARTITIONED BUBBLE COLUMN REACTOR
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    Velocity field
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    VISCOSITY FLUIDS
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    Bubble columns
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    Catalyst selectivity
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    Hydrodynamics
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    Liquids
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    Velocity
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    Mixing