Modeling Gas Holdup in Gas−Liquid−Fiber Semibatch Bubble Columns

Date
2005-11-23
Authors
Su, Xuefeng
Heindel, Theodore
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Mechanical Engineering
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Abstract

Three gas holdup models are developed that correspond to different flow regimes in a 15.24-cm-diameter semibatch bubble column filled with various fiber suspensions. Three different perforated plate aerators are used and have open area ratios (A) of 0.57%, 0.99%, and 2.14%. Rayon fiber suspensions with lengths (L) of 3, 6, and 12 mm and cellulose fibers are used to form the fiber suspensions over a range of fiber mass fractions up to 1.8%. The models reproduce most of the data within ±15%. A limitation of the current models, due to limited experimental data, is that the model coefficients and exponents vary with aeration plate open area ratio and column diameter.

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Reprinted with permission from Industrial & Engineering Chemistry Research 44 (2005): 9355–9363, doi:10.1021/ie050816e. Copyright 2005 American Chemical Society.

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