Prediction of agglomerate sizes in bubbling fluidized beds of group C powders

被引：87

作者：

Iwadate, Y ^{[1
]}

Horio, M ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Dept Chem Engn, Koganei, Tokyo 1848588, Japan

来源：

POWDER TECHNOLOGY | 1998年 / 100卷 / 2-3期

关键词：

cohesive particles; size prediction; agglomerating fluidization; van der Waals force; particle pressure;

D O I：

10.1016/S0032-5910(98)00143-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model to predict an equilibrium agglomerate size in agglomerating fluidized beds of Geldart group C powders was derived based on the balance of bed expansion force caused by bubbles and agglomerate-to-agglomerate cohesive rupture force. The bed compaction force caused by bubbles of ordinary sizes was found not sufficient to break agglomerates. Among the two solutions the one corresponding to a stable equilibrium was calculated by a simple iteration. The model was successfully validated by experimental data in the literature and additional new data in the present work. Previous models are also critically reviewed and evaluated. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：223 / 236

页数：14

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