Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite

YANG Guoqiang; ZENG Wei; LUO Huaxun; YANG Gaodong; ZHANG Zhibing

doi:10.11949/0438-1157.20200803

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Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite

Celebration Column for School of Chemistry and Chemical Engineering\, Nanjing University | 更新时间：2026-07-24

- Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite
- CIESC Journal Vol. 71, Issue 11, Pages: 4918-4926(2020)
- 作者机构：
  
  南京大学化学化工学院，江苏南京 210023
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200803
  CLC： TQ 021.4
- Received：22 June 2020，
  
  Revised：2020-09-06，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
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杨国强, 曾伟, 罗华勋, 杨高东, 张志炳. 亚硫酸铵微界面强化氧化特性研究[J]. 化工学报, 2020, 71(11): 4918-4926

YANG Guoqiang, ZENG Wei, LUO Huaxun, YANG Gaodong, ZHANG Zhibing. Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite[J]. CIESC Journal, 2020, 71(11): 4918-4926
杨国强, 曾伟, 罗华勋, 杨高东, 张志炳. 亚硫酸铵微界面强化氧化特性研究[J]. 化工学报, 2020, 71(11): 4918-4926 DOI： 10.11949/0438-1157.20200803.

YANG Guoqiang, ZENG Wei, LUO Huaxun, YANG Gaodong, ZHANG Zhibing. Study on the characteristics of micro-interface intensified oxidation of ammonium sulfite[J]. CIESC Journal, 2020, 71(11): 4918-4926 DOI： 10.11949/0438-1157.20200803.

摘要

以亚硫酸铵水溶液的空气氧化为研究对象，考察了微界面强化对该体系传质与氧化过程的影响。在同一实验平台和操作工况下，对微界面强化与传统鼓泡塔氧化过程的传质和反应性能进行了实验研究。利用高速摄像与压差测量技术，分别对反应过程的空气气泡分布与气含率变化进行了测定。结果表明，相较于传统鼓泡塔空气氧化反应器，微界面强化氧化反应器以微界面体系取代了传统毫-厘米级宏界面，在不同盐离子浓度与氧化气量工况下均表现出了良好的强化效能。在微界面体系强化下，亚硫酸铵氧化过程气含率大幅提升，相界面积增加十余倍，反应速率平均提升56.8%，实验结论为微界面强化反应器的多相反应体系工业应用提供了一定的数据支撑。

Abstract

The process intensification of interfacial area and reaction conditions in multi-phase systems are important issues in industrially scaled reactors. In order to investigate the intensifying effect of micro-interface system on gas-liquid mass transfer and reaction rate

the ammonium sulfite oxidation was selected as the research object. A systematic air forced oxidation experiment was carried out through the micro-interface intensification reactor (MIR) and the traditional bubble column reactor (BCR) under the same experiment platform and operating conditions. The bubble size distribution and overall gas holdup were measured by high-speed camera technology and differential pressure measurement

respectively. The experimental results showed that MIR obtained higher gas holdup because of the micro-interface structure

the interfacial area was increased by more than 10 times

the reaction rate increased by 56.8% averagely compared with BCR. The experimental conclusions provide certain data support for the industrial application of the multiphase reaction system of the micro-interface intensification reactor.

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references

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