CLC number: TQ534
On-line Access: 2015-10-01
Received: 2013-07-04
Revision Accepted: 2015-07-27
Crosschecked: 2015-09-15
Cited: 0
Clicked: 4174
Citations: Bibtex RefMan EndNote GB/T7714
Kun-zan Qiu, Ye Yang, Zhuo You, Zhi-hua Wang, Zhi-jun Zhou, Jun-hu Zhou, Ke-fa Cen. Effect of dilution of fuel in CO2 on the conversion of NH3 to NOx during oxy-fuel combustion[J]. Journal of Zhejiang University Science A, 2015, 16(10): 820-829.
@article{title="Effect of dilution of fuel in CO2 on the conversion of NH3 to NOx during oxy-fuel combustion",
author="Kun-zan Qiu, Ye Yang, Zhuo You, Zhi-hua Wang, Zhi-jun Zhou, Jun-hu Zhou, Ke-fa Cen",
journal="Journal of Zhejiang University Science A",
volume="16",
number="10",
pages="820-829",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1300231"
}
%0 Journal Article
%T Effect of dilution of fuel in CO2 on the conversion of NH3 to NOx during oxy-fuel combustion
%A Kun-zan Qiu
%A Ye Yang
%A Zhuo You
%A Zhi-hua Wang
%A Zhi-jun Zhou
%A Jun-hu Zhou
%A Ke-fa Cen
%J Journal of Zhejiang University SCIENCE A
%V 16
%N 10
%P 820-829
%@ 1673-565X
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1300231
TY - JOUR
T1 - Effect of dilution of fuel in CO2 on the conversion of NH3 to NOx during oxy-fuel combustion
A1 - Kun-zan Qiu
A1 - Ye Yang
A1 - Zhuo You
A1 - Zhi-hua Wang
A1 - Zhi-jun Zhou
A1 - Jun-hu Zhou
A1 - Ke-fa Cen
J0 - Journal of Zhejiang University Science A
VL - 16
IS - 10
SP - 820
EP - 829
%@ 1673-565X
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1300231
Abstract: The indirect chemical effects of fuel dilution by CO2 on NO formation were investigated numerically in this paper. CH4 doped with NH3 was used as fuel, while CO2 and O2 were mixed as oxidant. The dilution effect of CO2 was then investigated through adding extra CO2 to the reaction system. An isothermal plug flow reactor was used. An unbranched chain reaction mechanism is proposed to illustrate the chemical effects of CO2 on the H/O/OH radical pool and NOx. Due to the reaction between CO2 and H, extra NO will be formed in fuel-rich conditions, while NO will be inhibited in fuel-lean conditions and high CO2 dilution conditions. The reaction affected the radical pools of OH, H, and O of the branched chain reaction, and then the formation and reduction of NO. The pool of H had the greatest effect on NO reduction. The results suggest that the indirect chemical effects on NO formation differ between diluted fuel oxy-fuel combustion conditions and NOrmal oxy-fuel conditions.
This paper reports on a computational study of the influence of CO2 dilution and reaction on the formation and reduction of NO generated from CH4 doped with NH3 (to simulate fuel-bound N).The area of study is of great importance to the combustion and energy community.
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