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Modelling NO x emissions during staged combustion
Author(s) -
Xu Minghou,
Fan Yaoguo,
Yuan Jianwei,
Sheng Changdong,
Yao Hong
Publication year - 1999
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/(sici)1099-114x(19990625)23:8<683::aid-er506>3.0.co;2-b
Subject(s) - combustion , nox , staged combustion , chemistry , waste management , environmental science , nuclear engineering , combustion chamber , engineering , homogeneous charge compression ignition , organic chemistry
Staged combustion has been accepted as an effective way to reduce NO x emission. Based on the comparison of calculated results using Miller and Bowman's (1989, Progr. Energy Combust. Sci. 15 , 287) detailed elementary reaction model with experimental data, it is found effective to apply this model in the simulation of NO formation and destruction during staged combustion. Sensitivity analysis shows that C, CH, CH 2 and HCCO play an important role in NO destruction and reduction under fuel staging. NO generated in the primary zone can be reduced greatly by staged combustion. Besides the air–fuel ratio in the primary combustion zone, the combustion temperature in the reburning zone and the mass factor of the reburning fuel in the overall fuel, the main factors which affect NO destruction and reduction are the position where reburning is introduced and the types of reburning fuel. It is found that reburning cannot be introduced too close to the primary combustion zone. The reburning fuels that can effectively stimulate NO to HCN are H 2 and C 2 H 4 . Copyright © 1999 John Wiley & Sons, Ltd.