http://www.cnr.it/ontology/cnr/individuo/prodotto/ID257794

Zero-dimensional analysis of diluted oxidation of methane in rich conditions (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Zero-dimensional analysis of diluted oxidation of methane in rich conditions (Articolo in rivista) (literal)

Anno

2000-01-01T00:00:00+01:00 (literal)

Alternative label

Mariarosaria De Joannon, Alessandro Saponaro, Antonio Cavaliere (2000)
Zero-dimensional analysis of diluted oxidation of methane in rich conditions
in Proceedings of the Combustion Institute; Elsevier, Amsterdam (Paesi Bassi)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Mariarosaria De Joannon, Alessandro Saponaro, Antonio Cavaliere (literal)

Pagina inizio

1639 (literal)

Pagina fine

1646 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.sciencedirect.com/science/article/pii/S0082078400805627 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

28 (literal)

Rivista

Proceedings of the Combustion Institute (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

2 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Dipartimento di Ingegneria Chimica, Universita` Federico II, Napoli, Italy Centro Combustione-Ansaldo-Termosud Gioia del Colle, Bari, Italy (literal)

Titolo

Zero-dimensional analysis of diluted oxidation of methane in rich conditions (literal)

Abstract

Clean combustion technologies, based on reactant dilution, have shown very peculiar and innovative characteristics. Reduction of light and noise emission and uniformity of temperature and composition distribution inside the combustion chamber, related to an extension of the reaction zone, make these processes very promising in several technological fields. Analysis of combustion in very diluted conditions is needed for a general understanding of these processes, which remain unknown from many aspects. The study is also useful for the identification of practical constraints which define the most suitable reactor configurations and working parameters for process reliability. The present work deals with a theoretical analysis of methane oxidation in diluted conditions using one of the detailed kinetic schemes available in the literature. A well-stirred reactor (WSR) configuration has been considered as a first attempt of process schematization. This choice is consistent with the experimental characterization of the flameless combustion processes. The influence of residence time, C/O ratio, and inlet temperature on the steady state was studied for an oxygen molar fraction (0.05), chosen as representative of flameless combustion processes. It has been pointed out that only rich conditions (C/O ? 0.25) are possible for WSR creation, because they allow partial methane conversion. Three kinetic regimes, related to different temperature ranges, have been identified on the basis of product distribution analysis. Both the oxidation and pyrolitic regimes, occurring respectively in low- and high-temperature ranges, are the most interesting working conditions for diluted combustion. The former, leading to CO and H2O as main reaction products, is suitable for reburning technology. The latter, which corresponds to large production of CO and H2, has been shown to be a reasonable explanation of flameless combustion. Advantages and potentials of this innovative process are analyzed, taking into account the kinetic pathway followed in the different working conditions. (literal)

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