Enhancement of large-particle gas-fluidization by adding liquid

被引：11

作者：

Nagahashi, Y

Lee, DH

Grace, JR ^{[1
]}

Yokogawa, A

Asako, Y

机构：

[1] Univ British Columbia, Vancouver, BC V6T 1Z4, Canada

[2] Kochi Natl Coll Technol, Kochi 7838508, Japan

[3] Sungkyunkwan Univ, Suwon 440746, South Korea

[4] Kochi Univ Technol, Res Collaborat Ctr, Kochi 7828502, Japan

[5] Tokyo Metropolitan Univ, Tokyo 1920397, Japan

来源：

AICHE JOURNAL | 2003年 / 49卷 / 03期

关键词：

D O I：

10.1002/aic.690490312

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

There are circumstances where fluidization of particles by a gas can be promoted by the addition of small quantities of liquid, contrary to many reported cases where liquid impedes gas-solid fluidization. Enhancement occurs only when the particles are larger than about 3 mm in diameter, the liquid and particles have similar densities (within similar to25%), and the particles are poorly wetted by the liquid. When these conditions are met, the liquid causes the minimum gas fluidization velocity U-gmf to decrease and particle motion to be more vigorous. For low liquid loadings, U-gmf and the pressure drop across the bed are then predicted well by a "modified liquid-perturbed gas model."

引用

页码：675 / 681

页数：7

共 9 条

[1]

ERGUN S, 1952, CHEM ENG PROG, V48, P89

[2]

Gluckman M. J., 1976, FLUIDIZATION TECHNOL, V1, P395

[3] The effect of tangential lubrication by bridge liquid on the behavior of agglomerating fluidized beds [J].