Axial liquid dispersion in gas-liquid-solid circulating fluidized bed

被引：0
|
作者：
Vatanakul, M
Sun, GG [1 ]
Zheng, Y
Couturier, M
机构：
[1] Univ Petr, Beijing 102249, Peoples R China
[2] Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2005年 / 13卷 / 01期
关键词：
axial liquid dispersion; gas-liquid-solid circulating fluidized bed; liquid viscosity;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effects of liquid viscosities, solid circulating rates, liquid and gas velocities and phase holdups on the axial dispersion coefficient, D-ax, were investigated in a gas-liquid-solid circulating fluidized bed (GLSCFB). Liquid viscosity promotes the axial liquid backmixing when solid particles and gas bubbles are present. Increases in gas velocities and solid circulating rates lead to higher D-ax. The effects of liquid velocity on Dax are associated with liquid viscosity. Compared with conventional expanded beds, the GLSCFBs hold less axial liquid dispersion, approaching ideal plug-flow reactors.
引用
收藏
页码：124 / 127
页数：4
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