The effect of fine particles on elutriation of coarse particles in a gas fluidized bed

被引：37

作者：

Choi, JH ^{[1
]}

Suh, JM

Chang, IY

Shun, DW

Yi, CK

Son, JE

Kim, SD

机构：

[1] Konkuk Univ, Dept Chem Engn, Seoul 143701, South Korea

[2] Cheil Engn Co Ltd, Seoul 137070, South Korea

[3] Korea Inst Energy Res, Taejon 305343, South Korea

[4] Korea Adv Inst Sci & Technol, Dept Chem Engn, Taejon 305701, South Korea

来源：

POWDER TECHNOLOGY | 2001年 / 121卷 / 2-3期

关键词：

fluidization; fluidized bed; gas; solid; elutriation; entrainment;

D O I：

10.1016/S0032-5910(01)00333-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of fine particles on the elutriation rate of the coarse particles at the gas exit was investigated in a gas-fluidized bed (i.d.: 0.1 m, height: 1.97 m) with sand as bed material. The elutriation rate of the coarse particles increased with the gas velocity and the proportion of fine particles in the bed. It was found to increase nearly proportionally with the upward momentum of the fine particles calculated on bases of unit mass and composition of bed particles at a specified gas velocity. The effect of the fine particles on the elutriation of the coarse particles decreased as the gas velocity increased. The elutriation of the fine particles was not affected by the size distribution of bed particles. An improved correlation to determine the elutriation rate of the coarse particles has been proposed for sand particles. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：190 / 194

页数：5

共 9 条

[1] Correlation on the particle entrainment rate in gas fluidized beds [J].