DISPERSION OF LATERAL AND AXIAL SOLIDS IN A COCURRENT DOWNFLOW CIRCULATING FLUIDIZED-BED

被引：74

作者：

WEI, F

WANG, ZW

JIN, Y

YU, ZQ

CHEN, W

机构：

[1] Department of Chemical Engineering, Tsinghua University, Beijing

来源：

POWDER TECHNOLOGY | 1994年 / 81卷 / 01期

基金：

中国国家自然科学基金;

关键词：

DISPERSIONS; CIRCULATING FLUIDIZED BEDS; MIXING MEASUREMENTS;

D O I：

10.1016/0032-5910(94)02854-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A unique phosphor tracer technique has been developed that measures the solids tracer concentration with time at different radial and axial positions within the cocurrent downflow circulating fluidized bed with a 140 mm inner diameter. Solids mixing is described by a proposed two-dimensional dispersed plug-flow model. The radial and axial dispersion coefficients under various operating conditions were determined from the experimental values of tracer concentration versus time. On the basis of these results, correlations with the bed voidage and Reynolds number are proposed.

引用

页码：25 / 30

页数：6

共 6 条

[1] RESIDENCE TIME DISTRIBUTION OF SOLIDS IN A CIRCULATING FLUIDIZED-BED - EXPERIMENTAL AND MODELING STUDIES [J].