GAS-PHASE DISPERSION IN BUBBLE-COLUMNS

被引：32
|
作者：
WACHI, S [1 ]
NOJIMA, Y [1 ]
机构：
[1] KANEGAFUCHI CHEM IND CO LTD,ENGN RES LAB,HYOGO 676,JAPAN
来源：
CHEMICAL ENGINEERING SCIENCE | 1990年 / 45卷 / 04期
关键词：
D O I：
10.1016/0009-2509(90)85012-3
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Gas-phase dispersion in bubble columns of 0.5 and 0.2 m diameter was investigated experimentally by the impulse response method at superficial gas velocities in the range 0.029-0.456 m/s. Based on the recirculation theory of bubble columns, the expression for the axial dispersion coefficient of the gas phase was found to be EG = (180/α) UGD 3 2T. The experimental results in water bubble columns were quantitatively described by this equation with the proportional constant α = 9. At gas velocities higher than 0.1 m/s, the gas-phase dispersion was suppressed by the insertion of perforated plates with a free area of 44%. © 1990.
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页码：901 / 905
页数：5
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