PRESSURE AND VOIDAGE GRADIENTS IN VERTICAL GAS SOLID RISERS

被引：64

作者：

LOUGE, M

CHANG, H

机构：

[1] Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca

来源：

POWDER TECHNOLOGY | 1990年 / 60卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0032-5910(90)80144-N

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The customary practice of inferring average voidage from measurements of vertical pressure gradients may lead to significant errors at the transition between the dense and the dilute regions of a circulating fluidized bed riser. In this context, a one-dimensional model is developed to account for rapid variations of vertical voidage in these calculations In particular, the model explains the discrepancy observed by Arena et. al between the voidage profiles inferred from pressure gradients and those measured by quick-closing valve technique. The significance of this effect is discussed. © 1990.

引用

页码：197 / 201

页数：5

共 10 条

[1]

Arena U., 1985, CIRCULATING FLUIDIZE, P119

[2]

BOOTHROYD RG, 1971, FLOWING GAS SOLID SU

[3] A FULLY PREDICTIVE CRITERION FOR THE TRANSITION BETWEEN PARTICULATE AND AGGREGATE FLUIDIZATION [J].