Hydrodynamics of a three-phase fluidized bed - the inverse turbulent bed

被引：59

作者：

Comte, MP ^{[1
]}

Bastoul, D ^{[1
]}

Hebrard, G ^{[1
]}

Roustan, M ^{[1
]}

Lazarova, V ^{[1
]}

机构：

[1] LAB CENT LYONNAISE EAUX,CIRSEE,F-78230 LE PECQ,FRANCE

来源：

CHEMICAL ENGINEERING SCIENCE | 1997年 / 52卷 / 21-22期

关键词：

three-phase reactors; inverse fluidization; floating particles; hydrodynamics; axial solid concentration profile; critical gas velocity;

D O I：

10.1016/S0009-2509(97)00240-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper examines the fundamental characteristics of an inverse gas-liquid-solid turbulent bed. In this reactor, solids lighter than water, of large diameter (3-4 mm) and of densities ranging from 914 to 934 kg/m(3), are fluidized by only an upward gas flow. The hydrodynamic behaviour is described and characterized by some specific gas velocities. Particles are easily fluidized and can be uniformly distributed over the whole height of the column. The effect of the operating conditions (column diameter, gas sparger, initial weight of particles introduced into the reactor) on the hydrodynamics is presented. A simplified model is proposed to predict the values of one of these gas velocities. (C) 1997 Elsevier Science Ltd.

引用

页码：3971 / 3977

页数：7

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