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Numerical study on NO(x)/CO emissions in the diffusion flames of high-temperature off-gas of steelmaking converter
Li S(李森); Wei XL(魏小林); Yu LX(余立新); Li, S, Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China
Source PublicationApplied Energy
2011
Volume88Issue:4Pages:1113-1119
ISSN0306-2620
AbstractThe combustion of high-temperature off-gas of steelmaking converter with periodical change of temperature and CO concentration always leads to CO and NO(x) over-standard emissions. In the paper, high-temperature off-gas combustion is simulated by adopting counterflow diffusion flame model, and some influencing factors of CO and NO(x) emissions are investigated by adopting a detailed chemistry GRI 3.0 mechanism. The emission index of NO(x) (EINO(x)) decreases 1.7-4.6% when air stoichiometric ratio (SR) increase from 0.6 to 1.4, and it dramatically increases with off-gas temperature at a given SR when the off-gas temperature is above 1500 K. High-concentration CO in off-gas can result in high NO(x) emissions, and NO(x) levels increase dramatically with CO concentration when off-gas temperature is above 1700 K. Both SR and off-gas temperature are important for the increase of CO burnout index (BI(CO)) when SR is less than 1.0, but BI(CO) increase about 1% when off-gas temperature increases from 1100 K to 1900 K at SR > 1.0. BI(CO) increases with CO concentration in off-gas, and the influence of off-gas temperature on BI(CO) is marginal. BI(CO) increases with the relative humidity (RH) in air supplied, but it increases about 0.5% when RH is larger than 30%. (C) 2010 Elsevier Ltd. All rights reserved.
KeywordOff-gas Of Steelmaking Converter No(x) Co Counterflow Diffusion Flame Premixed Flames Laminar Combustion
Subject AreaEnergy & Fuels ; Engineering
DOI10.1016/j.apenergy.2010.10.030
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000286707300012
Funding OrganizationFinancial supports by National Natural Science Foundation of China (Nos. 50976123, 50976122) is acknowledged.
DepartmentLHD高效洁净燃烧(CPCR)
Classification一类
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44866
Collection等离子体与燃烧中心(2009-2011)
Corresponding AuthorLi, S, Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li S,Wei XL,Yu LX,et al. Numerical study on NO(x)/CO emissions in the diffusion flames of high-temperature off-gas of steelmaking converter[J]. Applied Energy,2011,88(4):1113-1119.
APA 李森,魏小林,余立新,&Li, S, Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.(2011).Numerical study on NO(x)/CO emissions in the diffusion flames of high-temperature off-gas of steelmaking converter.Applied Energy,88(4),1113-1119.
MLA 李森,et al."Numerical study on NO(x)/CO emissions in the diffusion flames of high-temperature off-gas of steelmaking converter".Applied Energy 88.4(2011):1113-1119.
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