O3氧化-SO32-还原燃煤烟气脱硝

文少飞; 李杰; 商克峰; 姜楠; 鲁娜; 吴彦

doi:10.12030/j.cjee.201609177

环境工程学报

O3氧化-SO32-还原燃煤烟气脱硝

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文少飞, 李杰, 商克峰, 姜楠, 鲁娜, 吴彦. O3氧化-SO32-还原燃煤烟气脱硝[J]. 环境工程学报, 2017, 11(9): 5071-5077. doi: 10.12030/j.cjee.201609177

引用本文:

文少飞, 李杰, 商克峰, 姜楠, 鲁娜, 吴彦. O3氧化-SO32-还原燃煤烟气脱硝[J]. 环境工程学报, 2017, 11(9): 5071-5077. doi: 10.12030/j.cjee.201609177

WEN Shaofei, LI Jie, SHANG Kefeng, JIANG Nan, LU Na, WU Yan. Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5071-5077. doi: 10.12030/j.cjee.201609177

Citation:

WEN Shaofei, LI Jie, SHANG Kefeng, JIANG Nan, LU Na, WU Yan. Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5071-5077. doi: 10.12030/j.cjee.201609177

O3氧化-SO32-还原燃煤烟气脱硝

1.
大连理工大学环境学院, 大连 116024
2.
大连理工大学电气工程学院, 大连 116024
基金项目:
国家自然科学基金资助项目（51477025，51507026）

博士后科学基金面上项目（2015M580223）

中国博士后科学基金特别资助（2016T90221）
中图分类号: X701

Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process

1.
School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China
2.
School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Fund Project:

摘要: 燃煤烟气同时脱硫脱硝是燃煤烟气污染治理技术研究与应用的趋势。提出利用臭氧注入到模拟烟气氧化NO生成NO2，再利用NO2氧化亚硫酸盐生成硫酸盐，同时NO2被还原生成N2的工艺方法。研究了沿面放电法产生臭氧、臭氧氧化NO、NO2在亚硫酸钠溶液中的转化和溶液中SO42-生成及影响因素。结果表明，臭氧投加量对NO氧化过程影响较大，当O3/NO摩尔比为1.1时，烟气中NO脱除率达到90%；亚硫酸钠溶液中NO2脱除率达到97%，且在吸收液温度小于80℃、pH小于10的条件下，NO2脱除率基本保持不变；液相亚硫酸钠溶液中NO2与SO32-离子之间氧化还原反应生成SO42-离子和N2是NO2转化的主导反应。
- 臭氧氧化 /
- 脱硝 /
- 湿法脱硫 /
- 亚硫酸盐氧化 /
- 同时脱硫脱硝
Abstract: Simultaneous desulfurization and denitrification of flue gas is a trend in the research and application for the pollution control technology. In this paper, we conduct the experiments according to the following thoughts. First, we ensure that the NO in flue gas oxidized to NO2 by ozone injection. Then we use sulfite solution as the absorbent to analysis the absorption process. It was found that the removal efficiency of NO increased with the molar ratio of O3/NO becoming higher, and when the molar ratio was 1.1, the removal efficiency of NO reached 90%. During the absorption process, the removal efficiency of NO2 reached 97% and remained unchanged under the condition of less than 80℃ in temperature and 10 in pH value. By analyzing the production of the absorption process, we can know that the redox reaction between NO2and SO32- was the main reaction in De-NOx process. The mainly production in the mixture solution of Na2SO3 and NaOH after the absorption process were SO42- and N2.
- ozone oxidation /
- denitrification /
- wet desulfurization /
- sulfite oxidation /
- simultaneous desulfurization and denitrification

[1]	郝吉明, 程真, 王书肖. 我国大气环境污染现状及防治措施研究[J]. 环境保护, 2012, 9(1):17-20
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O3氧化-SO32-还原燃煤烟气脱硝

1. 大连理工大学环境学院, 大连 116024
2. 大连理工大学电气工程学院, 大连 116024

收稿日期: 2016-12-02

基金项目:

国家自然科学基金资助项目（51477025，51507026）

博士后科学基金面上项目（2015M580223）

中国博士后科学基金特别资助（2016T90221）

关键词:

摘要: 燃煤烟气同时脱硫脱硝是燃煤烟气污染治理技术研究与应用的趋势。提出利用臭氧注入到模拟烟气氧化NO生成NO2，再利用NO2氧化亚硫酸盐生成硫酸盐，同时NO2被还原生成N2的工艺方法。研究了沿面放电法产生臭氧、臭氧氧化NO、NO2在亚硫酸钠溶液中的转化和溶液中SO42-生成及影响因素。结果表明，臭氧投加量对NO氧化过程影响较大，当O3/NO摩尔比为1.1时，烟气中NO脱除率达到90%；亚硫酸钠溶液中NO2脱除率达到97%，且在吸收液温度小于80℃、pH小于10的条件下，NO2脱除率基本保持不变；液相亚硫酸钠溶液中NO2与SO32-离子之间氧化还原反应生成SO42-离子和N2是NO2转化的主导反应。

English Abstract

Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process

1. School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China
2. School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China

Received Date: 2016-12-02

Fund Project:

Keywords:

ozone oxidation /
denitrification /
wet desulfurization /
sulfite oxidation /
simultaneous desulfurization and denitrification

Abstract: Simultaneous desulfurization and denitrification of flue gas is a trend in the research and application for the pollution control technology. In this paper, we conduct the experiments according to the following thoughts. First, we ensure that the NO in flue gas oxidized to NO2 by ozone injection. Then we use sulfite solution as the absorbent to analysis the absorption process. It was found that the removal efficiency of NO increased with the molar ratio of O3/NO becoming higher, and when the molar ratio was 1.1, the removal efficiency of NO reached 90%. During the absorption process, the removal efficiency of NO2 reached 97% and remained unchanged under the condition of less than 80℃ in temperature and 10 in pH value. By analyzing the production of the absorption process, we can know that the redox reaction between NO2and SO32- was the main reaction in De-NOx process. The mainly production in the mixture solution of Na2SO3 and NaOH after the absorption process were SO42- and N2.

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O3氧化-SO32-还原燃煤烟气脱硝

Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process

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O3氧化-SO32-还原燃煤烟气脱硝

English Abstract

Flue-gas De-NOx technology with O3 oxidation-SO32- reduction process

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