Effect of Gas Density on Gas Holdup in Bubble Columns

被引:26
|
作者
Hecht, Kristin [1 ]
Bey, Oliver [1 ]
Ettmueller, Juergen [1 ]
Graefen, Patrick [1 ]
Friehmelt, Rainer [1 ]
Nilles, Michael [1 ]
机构
[1] BASF SE, Proc Res & Chem Engn, D-67056 Ludwigshafen, Germany
关键词
Bubble columns; Bubble size; Coalescence; Gas; liquid systems; MASS-TRANSFER; ORGANIC LIQUIDS; HIGH-PRESSURE; SCALE-UP; WATER; REGIME; DESIGN;
D O I
10.1002/cite.201500010
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Gas density affects the gas holdup in bubble columns. Even at atmospheric pressure, different gases produce varying gas holdups. This contribution explores the causes for variations in gas holdups occurring for different gases. Differences in the bubble size distribution resulting from varying rates of bubble breakup and coalescence as well as dissimilar bubble rise velocities are the most likely causes of differences. Correlations that include a term for gas density are able to qualitatively predict the effect of changing gas density, but no correlation can consistently predict the gas holdup for multiple systems.
引用
收藏
页码:762 / 772
页数:11
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