GAS-PHASE DISPERSION IN BUBBLE-COLUMNS

被引：34

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.

引用

页码：901 / 905

页数：5

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