| Autre titre | Effects of carbon dioxide and water vapor addition on benzene and PAH formation in a laminar premixed CH4/O2/Ar flame |
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| DOI | Trouver le DOI : https://doi.org/10.1080/00102202.2018.1536881 |
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| Auteur | Rechercher : Wu, Yuxin; Rechercher : Liu, Fengshan1; Rechercher : Sun, Yunlan; Rechercher : Zhu, Baozhong |
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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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| Sujet | laminar premixed methane flame; CO2 and H2O addition; PAH formation; chemical kinetics |
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| Résumé | The effects of CO₂ and H₂O addition on benzene and PAH formation in a laminar premixed CH₄/O₂/Ar flame at atmospheric pressure were numerically investigated using two recently developed kinetic mechanisms with PAH formation up to at least benzopyrene. To distinguish the chemical effects of CO₂ and H₂O addition through partial replacement of Ar from their thermal effects, additional calculations were performed with fictitious carbon dioxide (FCO₂) and fictitious water vapor (FH₂O) addition. Both PAH kinetic mechanisms predicted that the formation of benzene and PAHs are promoted by the thermal effects of CO₂ and H₂O but are more significantly suppressed by their chemical effects. The pathway analyses revealed that the reduction of benzene concentration due to the chemical effects of CO₂ and H₂O is attributed to the following two aspects: (i) through the reduced concentration of propargyl radical or propyne and (ii) through the promoted oxidation and hydrogen abstraction reactions of benzene caused by increased OH concentration. The reduction of the overall PAH formation can be explained as the consequence of benzene reduction. Although there are quantitative differences in the predicted flame structure in terms of temperature and mole fractions of benzene and PAHs, overall qualitatively similar effects of CO₂ and H₂O addition on benzene and PAH formation are predicted by the two reaction mechanisms. |
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| Date de publication | 2019-10-30 |
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| Maison d’édition | Taylor & Francis |
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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 | cb7b48c0-7b5c-4f8d-824a-db6f89366dfb |
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| Enregistrement créé | 2021-02-26 |
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| Enregistrement modifié | 2021-02-26 |
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