STABILITY OF UNIFORM-FLOW IN PACKED-BED REACTORS

被引：14
|
作者：
STROH, F [1 ]
BALAKOTAIAH, V [1 ]
机构：
[1] UNIV HOUSTON,DEPT CHEM ENGN,HOUSTON,TX 77204
来源：
CHEMICAL ENGINEERING SCIENCE | 1992年 / 47卷 / 03期
关键词：
D O I：
10.1016/0009-2509(92)80010-A
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A model for packed beds with down flow in which a first-order exothermic reaction occurs is developed and analyzed. Various limiting models that are valid for large Peclet numbers and/or a constant heat source as reaction term are derived. The influence of the boundary conditions, the Peclet number, the activation energy, the Damkoehler number (conversion) and the heat of reaction on the stability of the one-dimensional flow with respect to two- and three-dimensional perturbations is determined. An examination of the numerical values shows that the parameters for typical packed beds may lie in the region in which the uniform flow is unstable.
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页码：593 / 604
页数：12
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