| Autre titre | Effects of oxidizer composition on the structure of laminar coflow (CO-H2)/(O2/H2O) diffusion flames |
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| Auteur | Rechercher : Xu, H.; Rechercher : Liu, F.1; Rechercher : Ren, X.; Rechercher : Wang, Z.; Rechercher : Sun, S. |
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| Affiliation | - Conseil national de recherches du Canada. Centre de recherche en métrologie
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| Format | Texte, Article |
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| Conférence | 12th Asia-Pacific Conference on Combustion, ASPACC 2019, July 1-5, 2019, Fukuoka, Japan |
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| Résumé | The structures of laminar coflow syngas diffusion flames burning in O₂/H₂O atmosphere were experimentally and numerically studied at 1 atm and inlet temperature of 400 K. The effects of oxidizer composition on the attachment and fuel pyrolysis inside the fuel tube were investigated by varying the O₂/H₂O molar ratio from 20/80 to 100/0. The flame attachment phenomenon was captured using a digital camera, and a 2D flame code was adopted to model the thermal and chemical structures of laminar coflow syngas flames using detailed kinetics mechanism. Results show that increasing the O₂/H₂O ratio has little influence on the flame attachment since the diffusions of both the fuel components and O₂ in the oxidizer were promoted. However, the temperature of the burner tip was significantly enhanced as O₂/H₂O ratio increases, and kinetics analysis shows that it is attributed to the promoted heat release rate of H + O₂(+M) = HO₂(+M). As the O₂/H₂O ratio increases, syngas pyrolysis inside the fuel tube is promoted, mainly through the H consumption reactions because of the enhanced back diffusion of H from the flame front into the burner. |
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| Date de publication | 2019-07-01 |
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| Maison d’édition | Combustion Institute |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 900341ab-af06-4beb-8a5f-96808bb91fdc |
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| Enregistrement créé | 2021-03-02 |
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| Enregistrement modifié | 2021-03-02 |
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