Nemitallah, Medhat et El-Adawy, Mohammed.
2025.
« Characteristics of combustion and NOx emissions of ammonia/methane flames in a premixed swirl gas turbine combustor ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
This study employs numerical simulations to investigate the combustion and emission attributes of ammonia/methane (NH?/CH?) blends in a swirl burner, utilizing advanced modeling approaches to support their potential industrial application. The chemistry of the combustion process is comprehensively addressed utilizing a detailed mechanism featuring 356 reaction steps and 59 species, integrated within the flamelet generated manifold (FGM) model framework. Raising the NH3 content from 20% to 80% at a fixed equivalence ratio (?) of 0.93 leads to a 4.3% reduction in the peak temperature. As the proportion of CH? increases, NH? radical concentrations decrease while OH radical concentrations rise resulting in enhanced conversion of NH? to NO and greater thermally dominated NOx emissions. Increasing ammonia concentration from 20% to 30%, the recorded NOx emissions, comprising NO, N2O, and NO2, escalated from 3975 PPM to 4638 PPM, indicating a 14.28% rise. The peak NOx levels were detected when the ammonia concentration reached 30% at ?=0.85. In the NH3/CH4 combustion, NO? formation is minimal, whereas the contribution of N?O is significant at higher equivalence ratios, and NO is dominant.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:17 |
| Dernière modification: | 18 déc. 2025 15:17 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32471 |
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