Mass transfer characteristics and mechanism in a water-sparged aerocyclone

ZHAO Qinghua; QUAN Xuejun; CHENG Zhiliang; BAI Weiyang

doi:10.3969/j.issn.0438-1157.2013.10.023

您当前的位置：

首页 >

文章列表页 >

Mass transfer characteristics and mechanism in a water-sparged aerocyclone

更新时间：2025-12-10

- Mass transfer characteristics and mechanism in a water-sparged aerocyclone
- CIESC Journal Issue 10, Pages: 3652-3657(2013)
- 作者机构：
  
  重庆理工大学化学化工学院,重庆,400054
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.10.023
  CLC： Q021.1
- Online First：05 October 2013，
  
  Published：05 October 2013
- 稿件说明：
移动端阅览
ZHAO Qinghua, QUAN Xuejun, CHENG Zhiliang, et al. Mass transfer characteristics and mechanism in a water-sparged aerocyclone[J]. CIESC Journal, 2013, (10): 3652-3657.
DOI：

ZHAO Qinghua, QUAN Xuejun, CHENG Zhiliang, et al. Mass transfer characteristics and mechanism in a water-sparged aerocyclone[J]. CIESC Journal, 2013, (10): 3652-3657. DOI： 10.3969/j.issn.0438-1157.2013.10.023.

摘要

对一种新型高效的气液传质设备——水力喷射-空气旋流器(WSA)的传质机理进行了研究。分别采用化学吸收法(CO2-空气-NaOH体系)和物理吸收法(CO2-空气-H2O体系)测定了不同进口气速、不同液体喷射速度下的有效相界面积a和液膜传质系数kL

并由此得到体积传质系数kLa。结果表明

由于WSA中气液间的强交互作用

a、kL以及kLa均随进口气速和液体喷射速度增大而增大。采用量纲分析法对实验数据进行了归纳

拟合出了a、kL和kLa随气相Reynolds数Reg、液相Weber数WeL之间的经验公式:a=0.0024Reg1.25WeL0.079

ShL=35.31Reg0.2303WeL0.13

kLa=6.52×10-8Reg1.48WeL0.21

这些关联式能较好地预测WSA的传质性能。研究还表明

在WSA中的气液射-旋流传质体系中

传质过程符合双膜理论、表面更新理论和溶质渗透理论

但以表面更新机理为主。

Abstract

Water-sparged aerocyclone(WSA)is a new type of gas-liquid mass transfer equipment with high efficiency

the mass transfer mechanism in WSA was investigated in this paper.The interfacial area(a)was determined by the chemical reaction method with CO2-NaOH solution system

and the liquid mass transfer coefficient(kL)was measured by the physical absorption method with CO2-H2O system.The a

kL and kLa increase with gas inlet velocity(ug)and liquid jet velocity(uL)because of the gas-liquid intense interaction in WSA.The empirical formulae were developed for a

kL and kLa

i.e

a=0.0024Reg1.25WeL0.079

ShL=35.31Reg0.2303WeL0.13

kLa=6.52×10-8Reg1.48WeL0.21

which fit the experimental data well and could be well used to predict the mass transfer characteristics in WSA.The mass transfer models of Whitman' double film theory

Higbie' penetration theory and Danckwerts' surface renewal theory can be well used to interpret the mass transfer mechanism of gas-liquid jet-aerocyclone system in WSA

and the surface renewal theory is the primary mass transfer mechanism.

关键词

Keywords

references

Views

332

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Wet desulfurization of flue gas and mass transfer mechanism in water-sparged aerocyclone

Micro-nano bubble and its gas-liquid interface characteristics

Intensification and mechanism of gas-liquid mass transfer in water-sparged aerocyclone by microparticles

Surrogate model-based optimization of combined separation for urea synthesis feed gas

Construction of transition metal-based nitrogen-doped carbon and their desulfurization performance

Related Author

YAN Yunpeng

XU Chunming

LAN Xingying

BAO Ruoning

LIU Jikun

HAN Yehua

DAI Li

QIU Facheng

Related Institution

State Key Laboratory of Heavy Oil Processing, China University of Petroleum

School of Chemical Engineering & Technology, Xi’an Jiaotong University

⁰