EN沿面介质阻挡放电协同催化剂脱除NO/SO2/Hg0实验研究
Experimental Study on the Removal of NO/SO2/Hg0 by the Combination of Surface Dielectric Barrier Discharge and Catalysts
- 动力工程学报 2025年45卷第2期 页码：292-299
- 作者机构：
1. 国能南京电力试验研究有限公司,江苏,南京,210046
2. 国能九江发电有限公司,江西,九江,332000
3. 华中科技大学 能源与动力工程学院 煤燃烧与低碳利用全国重点实验室,湖北,武汉,430074
- 作者简介：
[ "李朝兵(1979—),男,江苏金坛人,高级工程师,本科,主要从事大型火电机组燃烧与调试技术方面的研究,E-mail:12080702@ceic.com" ]
- 基金信息：
DOI：10.19805/j.cnki.jcspe.2025.230744
中图分类号： X701;O643.36-
网络出版：2025-02-15，
纸质出版：2025
- 稿件说明：
移动端阅览
李朝兵,杨泽勇,胡德浩,宋捷,赖金平,米高丽,于洁. 沿面介质阻挡放电协同催化剂脱除NO/SO2/Hg0实验研究动力工程学报, 2025, 45(2): 292-299 https://doi.
org/10.19805/j.cnki.jcspe.2025.230744
李朝兵,杨泽勇,胡德浩,宋捷,赖金平,米高丽,于洁. 沿面介质阻挡放电协同催化剂脱除NO/SO2/Hg0实验研究动力工程学报, 2025, 45(2): 292-299 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.230744.
org/10.19805/j.cnki.jcspe.2025.230744 DOI：
摘要
通过选取并制备纳米TiO
2
、Mn-TiO
2
和Mn-Ce-TiO
2
3种催化剂
研究了不同反应温度、烟气中氧体积分数以及气体停留时间条件下
各催化剂对NO、SO
2
及Hg
0
3种污染物的催化氧化性能;分析了低温等离子体条件下
不同催化剂对NO、SO
2
及Hg
0
的氧化机制。结果表明:反应温度升高能够促进NO、SO
2
及Hg
0
的氧化转化;增加反应气在催化反应器中的停留时间同样可以促进上述污染物的转化
但停留时间过长会引发副反应;在不同氧化还原气氛下
NO、SO
2
及Hg
0
表现的催化脱除机理不同;相比于TiO
2
和Mn-TiO
2
催化剂
Mn-Ce-TiO
2
催化剂对NO、SO
2
及Hg
0
的脱除效果最优;相比于单独使用沿面型介质阻挡放电和催化剂
两者之间的耦合能够更好地脱除NO、SO
2
及Hg
0
并且协同Mn-Ce-TiO
2
催化剂具有最优的污染物脱除性能。
Abstract
The effect of reaction temperature
oxygen volume fraction
and gas residence time on the catalytic oxidation of NO/SO
2
/Hg
0
by the prepared nano TiO
2
Mn-TiO
2
and Mn-Ce-TiO
2
catalysts was studied. The oxidation mechanism of NO/SO
2
/Hg
0
by these catalysts was ana
lyzed in low temperature plasma. Results show that the oxidation rates of NO
SO
2
and Hg
0
are enhanced with the elevated temperature and gas residence time in the catalytic reactor. However
prolonged residence time might induce side reactions. The removal mechanism of NO/SO
2
/Hg
0
varies between the absence and presence of oxygen. Compared to TiO
2
and Mn-TiO
2
the Mn-Ce-TiO
2
catalyst exhibits superior performance in removing NO/SO
2
/Hg
0
. Synergistic treatment by surface dielectric barrier discharge (SDBD) and catalysts shows greater removal efficacy of NO/SO
2
/Hg
0
compared to the individual
specifically
the combination of SDBD and Mn-Ce-TiO
2
.
关键词
Keywords
references
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