SIMULATION-MODELS ACCOUNTING FOR RADIAL VOIDAGE PROFILES IN FIXED-BED REACTORS

被引:94
作者
PAPAGEORGIOU, JN [1 ]
FROMENT, GF [1 ]
机构
[1] STATE UNIV GHENT,PETROCHEM TECH LAB,B-9000 GHENT,BELGIUM
关键词
D O I
10.1016/0009-2509(95)00138-U
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Momentum, heat and mass transfer in fixed-bed reactors were modeled by incorporating the structural nonuniformities of the bed into the respective conservation equations. A pseudohomogeneous and a heterogeneous model with porosity and velocity profiles (2D-HOM-PVP and 2D-HET-PVP, respectively) were thus developed. In the region extending up to a distance of two particle diameters from the wall bounding surface, the flow oscillates in a strongly damped fashion with peak velocities at locations of higher voidage. The effect of the nonuniformity of flow on the heat and mass transport processes is more accurately described when a distinction is made between the fluid and the solid phase in the fixed bed.
引用
收藏
页码:3043 / 3056
页数:14
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