EFFECT OF GAS DISTRIBUTOR ON HYDRODYNAMICS IN SHALLOW BUBBLE COLUMN REACTORS

被引：20
|
作者：
Lau, Raymond [1 ]
Sim, Wei Shan Beverly [1 ]
Mo, Rujuan [1 ]
机构：
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore, Singapore
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2009年 / 87卷 / 06期
关键词：
shallow bed; bubble column; hydrodynamics; distributor effect; fluidisation; SPARGER DESIGN; MASS-TRANSFER; FLUIDIZED-BEDS; DIAMETER RATIO; HEAT-TRANSFER; LIQUID; HEIGHT; HOLDUP; SIZE;
D O I：
10.1002/cjce.20224
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effects of gas distributor on hydrodynamics in an air-water shallow bubble column reactor are investigated. Three types of distributors, namely, single nozzle, perforated plate and porous plate are being studied. The overall gas holdup, bubble size distributions and bubble rise velocity distributions are studied over a range of superficial gas velocities. The results show that single nozzle is not suitable for shallow bed operation. While perforated plate and porous plate distributors have comparable behaviour in the absence of solids, the addition of solids particles causes the two distributors to behaviour differently. The presence of solids promotes bubble coalescence for perforated plate distributor while the same inhibits bubble coalescence for porous plate distributor.
引用
收藏
页码：847 / 854
页数：8
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