Ammonia and ammonia/hydrogen blends oxidation in a jet-stirred reactor: Experimental and numerical study
KAUST DepartmentChemical Engineering Program
Clean Combustion Research Center
Combustion and Pyrolysis Chemistry (CPC) Group
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR-CRG2019-4051
Embargo End Date2023-10-18
Permanent link to this recordhttp://hdl.handle.net/10754/672892
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AbstractOne of the most important problems of modern energy industry is the transition to carbon free fuels, which can mitigate the negative environmental effects. This paper presents experimental data on ammonia and ammonia/hydrogen blends oxidation in an isothermal jet-stirred reactor over the temperature of range 800–1300 K. Experiments were performed under atmospheric pressure, residence time of 1 s, various equivalence ratios, and with argon dilution at ≈0.99. It was revealed that hydrogen addition shifts the onset temperature of ammonia oxidation by about 250 K towards the lower region. A detailed chemical kinetic model which showed the best predictive capability was used to understand the effect of hydrogen addition on ammonia reactivity. It was shown that hydrogen presence results into higher concentrations of H, O and OH radicals. Moreover, these radicals start to form at lower temperatures when hydrogen is present. However, the change of the equivalence ratio has only slight effect on the temperature range of ammonia conversion.
CitationOsipova, K. N., Zhang, X., Sarathy, S. M., Korobeinichev, O. P., & Shmakov, A. G. (2022). Ammonia and ammonia/hydrogen blends oxidation in a jet-stirred reactor: Experimental and numerical study. Fuel, 310, 122202. doi:10.1016/j.fuel.2021.122202
SponsorsThe reported study was supported by Russian Foundation for Basic Research [grant number 20-33-90163]; this work was supported by the KAUST Office of Sponsored Research [OSR-CRG2019-4051].