Gas holdup and volumetric liquid-phase mass transfer coefficient in bubble column with draught tube and with gas dispersion into tube.
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概要
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The gas holdup ε and the volumetric liquid-phase mass transfer coefficient kLa were studied experimentally in a bubble column with a draught tube and with gas dispersion into the tube. From experimental observation ε increases with increasing gas velocity and frothing ability of liquid, while the other properties of the liquid and the column dimensions have a minor effect on ε. kLa increases with gas velocity, column diameter, frothing ability of liquid and diffusivity of the dissolved gas, and decreases with increase in (Di/Do). Other dimensions of the column have a minor effect on kLa. Based on these observations, empirical equations for ε and kLa are proposed which are applicable to columns with diameters of 0.1-0.3 m. At the same gas velocity, kLa in this column is larger than that in the bubble column and smaller than that in the column with a draught tube and with gas dispersion into the annulus for a liquid with frothing ability.
- 公益社団法人 化学工学会の論文
著者
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Koide Kozo
Department Fo Chemical Engineering Tokyo Institute Of Technology
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Horibe Kazuyoshi
Department Of Anatomy School Of Medicine Tokushima University
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IWAMOTO SHINJI
Department of Chemical Engineering, Shizuoka University
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KUREMATSU KATSUMI
Department of Chemical Engineering, Shizuoka University
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IWATA YUTAKA
Department of Chemical Engineering, Shizuoka University
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