Enhancement of gas-liquid mass transfer of reactive slurry

CAI Wangfeng; LI Xia; XU Chunjian; ZHOU Ming

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Enhancement of gas-liquid mass transfer of reactive slurry

更新时间：2025-12-10

- Enhancement of gas-liquid mass transfer of reactive slurry
- CIESC Journal Issue 4, Pages: 579-586(2005)
- 作者机构：
  
  天津大学化工学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 April 2005，
  
  Published：25 April 2005
- 稿件说明：
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CAI Wangfeng, LI Xia, XU Chunjian, et al. Enhancement of gas-liquid mass transfer of reactive slurry[J]. CIESC Journal, 2005, (4): 579-586.
DOI：

CAI Wangfeng, LI Xia, XU Chunjian, et al. Enhancement of gas-liquid mass transfer of reactive slurry[J]. CIESC Journal, 2005, (4): 579-586. DOI：

摘要

针对液膜区存在复杂反应的浆料吸收体系，通过气体吸收对分散相颗粒溶解增强作用的研究，建立了反应浆料增强气体吸收的三区域模型.采用搅拌槽间歇吸收实验测定了不同搅拌强度和Mg(OH)2浆料固含率时SO2吸收速率增强.研究发现，颗粒粒径、浆料浓度、“惰性区”厚度以及待吸收气体分压等参数是影响吸收增强作用的主要参数.考虑气液近界面“惰性区”和浆料表观黏度影响后的三区域模型结果与实验结果具有良好的一致性.

Abstract

The three-zone enhancement model

after investigating the enhancement of gas absorption on solid dissolution

was developed for the absorption systems with complex reactions between absorbed gas and dissolved particles existing in the liquid film zone. Enhancement of absorption rate was measured at different solid hold-up and stirring intensity in a batch stirred vessel for the SO2-Mg(OH)2 system.It was found that particle size

slurry hold-up

‘inert zone’thickness

and partial pressure of transported gas showed major influences on the absorption enhancement.The model results with the consideration of ‘inert zone’ near gas-liquid interface and corrected by apparent viscosity agreed with experimental data well.

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