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    Hydrodynamic investigation of bubble-column reactors: effect of column configuration

    Access Status
    Fulltext not available
    Authors
    Akhtar, Abid
    Tade, Moses
    Pareek, Vishnu
    Date
    2010
    Type
    Journal Article
    
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    Citation
    Akhtar, A. and Tade, M. and Pareek, V. 2010. Hydrodynamic investigation of bubble-column reactors: effect of column configuration. Asia-Pacific Journal of Chemical Engineering. 5 (4): pp. 626-636.
    Source Title
    Asia-Pacific Journal of Chemical Engineering
    DOI
    10.1002/apj.458
    ISSN
    1932-2135
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/17918
    Collection
    • Curtin Research Publications
    Abstract

    Bubble-column reactors are quite popular in the chemical, biochemical and petrochemical industries due to their relatively simple construction, favourable heat and mass transfer properties and low operating cost. Among the various design parameters, column geometry (configuration) has a significant impact on the overall throughput. In this study, an experimental investigation of the bubble-column configuration on its hydrodynamics has been conducted with three different sizes of the column (ID = 10–45 cm). A comparison in terms of the overall gas holdup as well as localised bubble properties is performed using the four-point optical technique and hydrodynamic similarities/dissimilarities are discussed. The study showed that the overall gas holdup was a function of the gas flow rate. For the range of gas velocity investigated (9.5–22.3 cm3/ min), the smaller column had 50–60% more holdup than the bigger column. Localised bubble properties exhibited similar behaviour (i.e. higher values for the smaller column). A comparative study of L/D illustrated an invariant behaviour at a high value of L/D (>5.5). A low L/D (≤1.5), however, showed a prominent influence on hydrodynamics.

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