A study on thermal combustion of lean methane–air mixtures: Simplified reaction mechanism and kinetic equations

Homogeneous combustion of lean methane–air mixtures occurs in both thermal and catalytic reverse-flow reactors. The modeling and design of such reactor requires a reliable and relatively simple kinetic model of the combustion. Although a number of detailed descriptions of the kinetics of homogeneous...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2009-11, Vol.154 (1), p.9-16
Main Authors: Gosiewski, Krzysztof, Pawlaczyk, Anna, Warmuzinski, Krzysztof, Jaschik, Manfred
Format: Article
Language:English
Subjects:
Carbon monoxide
Chemical engineering
Chemical reactors
Combustion
Descriptions
Homogeneous methane combustion
Kinetics
Mathematical models
Mine ventilation air
Monolith packing
Radicals
Reaction kinetics
Reaction mechanism
Reactors
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Summary:Homogeneous combustion of lean methane–air mixtures occurs in both thermal and catalytic reverse-flow reactors. The modeling and design of such reactor requires a reliable and relatively simple kinetic model of the combustion. Although a number of detailed descriptions of the kinetics of homogeneous combustion are available in the literature (including those which take into account complex free-radical reactions), their practical usefulness is doubtful. In the present study a simple one- or two-stage model is proposed which directly describes global kinetics and neglects intermediates and radicals. Special attention is paid to the mechanism of the possible formation of carbon monoxide. The studies were done both for the combustion in the free space and for the process taking place over a monolith packing.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2009.03.045