A novel method for determination of choking velocities

被引：23

作者：

Bai, D ^{[1
]}

Issangya, AS ^{[1
]}

Grace, JR ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem & Bioresource Engn, Vancouver, BC V6T 1Z4, Canada

来源：

POWDER TECHNOLOGY | 1998年 / 97卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

choking; instability; pneumatic transport; fluidized beds; circulating beds;

D O I：

10.1016/S0032-5910(97)03398-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel dynamic method is presented which allows both the type A and the type C choking velocities to be determined sequentially in a single experiment, with ease of operation and considerable experimental economy. Initial results have shown that the type A choking velocity, U-cA, and type C choking velocity, U-cC, are consistent with earlier measurements using conventional techniques. The average solids holdups corresponding to choking conditions for the FCC particles are about 0.04 for type A choking and 0.25 for type C choking, again in good agreement with available results from the literature. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：59 / 62

页数：4

共 16 条

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[8] ISSANGYA AS, 1997, CIRCULATING FLUIDIZE, V5, P60
[9] Karri S. B. R., 1991, CIRCULATING FLUIDIZE, P67
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