Abstract
In the present work, experimental results from the literature on the effect of CO on the NH
oxidation in the absence and presence of NO are supplemented with novel
flow reactor results and interpreted in terms of a detailed chemical
kinetic model. The kinetic model provides a satisfactory prediction over
a wide range of conditions for oxidation in flow reactors and for flame
speeds of CO/NH.
With increasing levels of CO, the generation of chain carriers
gradually shifts from being controlled by the amine reaction subset to
being dominated by the oxidation chemistry of CO, facilitating reaction
at lower temperatures. At elevated temperature, presence of CO causes a
change in selectivity of NH oxidation from N
to NO. The present work provides a thorough evaluation of the amine
subset of the reaction mechanism for the investigated conditions and
offers a kinetic model that reliably can be used for post-flame
oxidation modeling in engines and gas turbines fueled by ammonia with a
hydrocarbon or alcohol as co-fuel.
Original language | English |
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Article number | 112438 |
Journal | Combustion and Flame |
Volume | 257 |
Number of pages | 10 |
ISSN | 0010-2180 |
DOIs | |
Publication status | Published - 2023 |
Keywords
- Ammonia
- NH 3
- Carbon monoxide
- NCO, NH3-CO-NO interaction
- Nitric oxide
- NO