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Experimental study on the time evolutions of methane reburning and combustion process / Enlu Wang in Industrial & engineering chemistry research, Vol. 50 N° 17 (Septembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 9834-9838 Titre : Experimental study on the time evolutions of methane reburning and combustion process Type de document : texte imprimé Auteurs : Enlu Wang, Auteur ; Xuchang Xu, Auteur ; Mingchuan Zhang, Auteur Année de publication : 2011 Article en page(s) : pp. 9834-9838 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Combustion Résumé : An electrical heated test rig with nonintrusive multipoint sampling analysis system was built up. On such a test rig, the experiments of time evolution of methane reburning and combustion process have been carried out. In the methane reburning process, the concentrations of O2, CH4, C2H4, C2H6, and NO decrease during 0.2-1.0 s, while the concentrations of C2H2, CO, H2, and HCN increase within the same time. Through comparison of the time evolutions of methane reburning and combustion process, the changing trends of CH4, C2H2, C2H4, C2H6, H2, O2 and CO are similar, and the concentrations of CH4, C2H4, and C2H6 in the methane rebuming process are slightly higher than these in the methane combustion process, while the concentration of C2H2 in the methane rebuming process is obviously lower than that in the methane combustion process. The experimental results suggest that C2H2 is the key hydrocarbon in the methane reburnin process, and the NO reduction by methane as the reburning fuel mainly proceeds via the reaction with C2H2. The further validating experimental results show that C2H2 is of the most significant effects on NO reduction when compared with CH4, C2H4, and C2H6 at the same stoichiometric ratio. In the case with C2H2, the NO reduction efficiency is about 90%. But for CH4, C2H4, and C2H6, the NO reduction efficiency is only about 28, 35, and 45%, respectively. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24483624 [article] Experimental study on the time evolutions of methane reburning and combustion process [texte imprimé] / Enlu Wang, Auteur ; Xuchang Xu, Auteur ; Mingchuan Zhang, Auteur . - 2011 . - pp. 9834-9838. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 17 (Septembre 2011) . - pp. 9834-9838 Mots-clés : Combustion Résumé : An electrical heated test rig with nonintrusive multipoint sampling analysis system was built up. On such a test rig, the experiments of time evolution of methane reburning and combustion process have been carried out. In the methane reburning process, the concentrations of O2, CH4, C2H4, C2H6, and NO decrease during 0.2-1.0 s, while the concentrations of C2H2, CO, H2, and HCN increase within the same time. Through comparison of the time evolutions of methane reburning and combustion process, the changing trends of CH4, C2H2, C2H4, C2H6, H2, O2 and CO are similar, and the concentrations of CH4, C2H4, and C2H6 in the methane rebuming process are slightly higher than these in the methane combustion process, while the concentration of C2H2 in the methane rebuming process is obviously lower than that in the methane combustion process. The experimental results suggest that C2H2 is the key hydrocarbon in the methane reburnin process, and the NO reduction by methane as the reburning fuel mainly proceeds via the reaction with C2H2. The further validating experimental results show that C2H2 is of the most significant effects on NO reduction when compared with CH4, C2H4, and C2H6 at the same stoichiometric ratio. In the case with C2H2, the NO reduction efficiency is about 90%. But for CH4, C2H4, and C2H6, the NO reduction efficiency is only about 28, 35, and 45%, respectively. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24483624