Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR

doi:10.1016/j.fuel.2020.117231

	Effect of HCl and CO on nitrogen oxide formation mechanisms within the temperature window of SNCR
	Zhao J(赵京)1,2,3 ; Wei XL(魏小林)1,2 ; Li T(李腾)1 ; Li S(李森)1
通讯作者	Wei, Xiaolin(xlwei@imech.ac.cn)
发表期刊	FUEL
	2020-05-01
卷号	267 页码:8
ISSN	0016-2361
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.
关键词	HCl CO NO Radicals Competitive relationships
DOI	10.1016/j.fuel.2020.117231
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000514171800042
关键词[WOS]	NO REDUCTION ; CHLORINE ; COMBUSTION ; EMISSIONS ; BIOMASS ; INHIBITION ; PYROLYSIS ; OXIDATION ; AMMONIA ; SO2
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
资助项目	National Natural Science Foundation of China[51736010]
项目资助者	National Natural Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Wei, Xiaolin
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81566
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Engn Thermophys, 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.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2020027.pdf（611KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文