Influence of alcohol addition on gas hold-up in bubble columns: Development of a scale up model

被引：33
|
作者：
Krishna, R [1 ]
Dreher, AJ [1 ]
Urseanu, MI [1 ]
机构：
[1] Univ Amsterdam, Dept Chem Engn, NL-1018 WV Amsterdam, Netherlands
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2000年 / 27卷 / 04期
关键词：
D O I：
10.1016/S0735-1933(00)00129-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Measurements were carried out in bubble columns with diameters of 0.1, 0.15 and 0.38 m with air - water system to which ethanol was added in concentrations ranging from 0.03 - 1 volume %. Alcohol addition results in a significant increase in the gas hold-up, epsilon. This increase in epsilon can be attributed to a delay in the point of transition from homogeneous to heterogeneous flow regime. The model of Krishna et al. (Chem. Eng. Sci., 54, 171 (1999)) was found applicable for the range of column diameters studied, after accounting for the influence of alcohol addition on the regime transition parameters. (C) 2000 Elsevier Science Ltd.
引用
收藏
页码：465 / 472
页数：8
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