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Effects of water vapor and temperature on NOx and CO emissions during converter gas combustion
Zhai YH(翟英华); Li S(李森); Yan, WP; Wei XL(魏小林); Zhang, LY; Wang, YT
Source PublicationFUEL
2019-11-15
Volume256Pages:6
ISSN0016-2361
Abstract

Converter gas is a valuable fuel in the converter steelmaking process, and NOx and CO emissions are high due to the high temperature combustion and the absence of H2O vapor. The effects of H2O vapor concentration and the inlet temperature of converter gas on NOx and CO emissions in the combustion are investigated by a detailed chemical reaction mechanism. CO emission decreases sharply when C-H2O,C-inlet increases from 0 to 0.4%. At C-H2O,C-inlet > 0.4% and T-inlet < 950 K, for the reduction of CO emission, the inlet temperature of converter gas is predominant over that of H2O vapor in air. The inlet temperature of converter gas has noticeable influence on NO emission at C-H2O,C-inlet < 2%. With the increase of C-H2O,C-inlet, NO emission first increases, then reaches a peak value, finally decreases. At T-inlet > 1050 K and C-H2O,C-inlet > 2%, NO emission noticeably decreases with C-H2O,C-inlet. In the presence of H2O, H and OH free radicals are easily formed, the reduction path of NO is as follows: NO -> NH/HNO -> N-2.

KeywordWater vapor concentration Converter gas Inlet temperature CO emission NO emission
DOI10.1016/j.fuel.2019.115914
Indexed BySCI ; EI
Language英语
WOS IDWOS:000482184800039
WOS KeywordNUMERICAL-SIMULATION ; METHANE
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding ProjectTransformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21040500]
Funding OrganizationTransformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences
Classification一类
Ranking1
ContributorLi, Sen
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79964
Collection高温气体动力学国家重点实验室
Recommended Citation
GB/T 7714
Zhai YH,Li S,Yan, WP,et al. Effects of water vapor and temperature on NOx and CO emissions during converter gas combustion[J]. FUEL,2019,256:6.
APA Zhai YH,Li S,Yan, WP,Wei XL,Zhang, LY,&Wang, YT.(2019).Effects of water vapor and temperature on NOx and CO emissions during converter gas combustion.FUEL,256,6.
MLA Zhai YH,et al."Effects of water vapor and temperature on NOx and CO emissions during converter gas combustion".FUEL 256(2019):6.
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