Studies on hydrodynamics of slurry turbulent bubble column（Ⅰ）Gas holdup and its radial distribution

WANG Lijun; ZHANG Yu; LI Xi

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Studies on hydrodynamics of slurry turbulent bubble column（Ⅰ）Gas holdup and its radial distribution

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- Studies on hydrodynamics of slurry turbulent bubble column（Ⅰ）Gas holdup and its radial distribution
- CIESC Journal Issue 12, Pages: 2996-3002(2008)
- 作者机构：
  
  浙江大学材料与化学工程学院,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 December 2008，
  
  Published：05 December 2008
- 稿件说明：
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WANG Lijun, ZHANG Yu, LI Xi. Studies on hydrodynamics of slurry turbulent bubble column（Ⅰ）Gas holdup and its radial distribution[J]. CIESC Journal, 2008, (12): 2996-3002.
DOI：

WANG Lijun, ZHANG Yu, LI Xi. Studies on hydrodynamics of slurry turbulent bubble column（Ⅰ）Gas holdup and its radial distribution[J]. CIESC Journal, 2008, (12): 2996-3002. DOI：

摘要

对高气速、高固含率、大塔径条件下的湍动浆态床平均气含率和气含率径向分布进行了实验测定，结合工业实验数据，归纳出可用于工业条件的气含率计算关联式，给出了简化的流体力学模型用于气含率分布的模拟。结果表明，浆态床气含率将随塔径增加而降低，固含率与塔径之间存在交互影响；同时，气含率的径向分布也随气速和塔径的增大而改变，存在明显的放大效应，简化模型能够较好地模拟实验结果。

Abstract

The slurry bubble column operating at turbulent flow regime is of practical importance.The average gas holdup and gas holdup radial distribution in the column were measured under the condition of high superficial gas velocity

high solid content and large column diameter

including both the experimental and industrial data.A novel gas holdup correlation was then obtained

which is applicable to industrial conditions.A simplified hydrodynamic model was developed to predict gas holdup distribution.Experimental results showed that gas holdup for the slurry system would decrease as the column diameter and solid content increased.In addition

increase of either column diameter or superficial gas velocity would cause gas holdup distribution steeper in the radial direction.The model computational results agreed well with experimental data.

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