Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR
文献类型：期刊论文
| 作者 | Zhao J(赵京)1,2,3 ; Wei XL(魏小林)2,3; Li T(李腾)3; Li S(李森)3
|
| 刊名 | FUEL
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 267页码:8 |
| ISSN号 | 0016-2361 |
| 关键词 | HCl CO NO Radicals Competitive relationships |
| DOI | 10.1016/j.fuel.2020.117231 |
| 通讯作者 | Wei, Xiaolin(xlwei@imech.ac.cn) |
| 英文摘要 | Selective non-catalytic reduction (SNCR) is an effective way to limit NO emissions in power plants. However, the concentration of HCl in the flue gas may be relatively high for some chloride-containing solid fuels combustion. HCl may play an important role in adjusting NO formation within the temperature window of SNCR. In addition, the various combustion atmospheres (from oxidizing to reducing) can influence pollutant formation. To reveal the effect mechanism of HCl and CO on NO emission, the reaction system is simplified as a CO/NH3/O-2/H2O/HCl system with N-2 as the balance gas. The experiments are investigated in a tube flow reactor for CO/NH3 combustion under the temperature window of SNCR (from 1173 to 1423 K). Different inlet concentrations of HCl, CO, NH3, O-2, and H2O with N-2 as the balance gas are used to simulate the process of fuel combustion. The results obtained from the experiments show that HCl addition can decrease the temperature window. HCl can inhibit NH3 oxidation to NO at 1173 K and exhibits promotion at higher temperatures (> 1173 K). The concentration of NO tends to increase with a slight fluctuation when the concentration of CO increases from 1% to 6% under an oxidizing atmosphere. However, CO inhibits NO emission under lean oxidation conditions. The modeling predictions are in good agreement with the experimental results. The calculated results demonstrate that HCl and CO addition can affect NO formation by the recombination of H, O and OH radicals. The competitive relationships among various elementary reactions determine the final results. |
| 分类号 | 一类 |
| WOS关键词 | NO REDUCTION ; CHLORINE ; COMBUSTION ; EMISSIONS ; BIOMASS ; INHIBITION ; PYROLYSIS ; OXIDATION ; AMMONIA ; SO2 |
| 资助项目 | National Natural Science Foundation of China[51736010] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000514171800042 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Wei, Xiaolin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81565]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhao J,Wei XL,Li T,et al. Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR[J]. FUEL,2020,267:8. |
| APA | 赵京,魏小林,李腾,&李森.(2020).Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR.FUEL,267,8. |
| MLA | 赵京,et al."Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR".FUEL 267(2020):8. |
入库方式： OAI收割
来源：力学研究所
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