Effect of self-inhibition at a flame propagation in rich gaseous mixtures of combustible–air–diluent

An analysis of published experimental data characterizing the influence of diluents of various chemical nature (both halogenated and chemically inert) on upper flammability limits of flammable gases in air (methane and hydrogen have been considered as examples) has been done. Dependences of critical...

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Bibliographic Details
Published in:Journal of loss prevention in the process industries 2007-07, Vol.20 (4), p.486-493
Main Authors: Azatyan, V.V., Shebeko, Yu.N., Shebeko, A.Yu, Navzenya, V.Yu
Format: Article
Language:English
Subjects:
Flammability limits
Hydrogen
Inhibition
Methane
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Summary:An analysis of published experimental data characterizing the influence of diluents of various chemical nature (both halogenated and chemically inert) on upper flammability limits of flammable gases in air (methane and hydrogen have been considered as examples) has been done. Dependences of critical oxygen concentration C O 2 cr and critical fuel equivalence ratio ϕ cr for mixtures combustible–air–diluent at upper flammability limits on diluent concentration were determined. The obtained data were interpreted on the basis of the concept of self-inhibition at combustion of rich mixtures of organic combustibles in air. A method for evaluation of relative effectiveness of various inhibitors and for determination of availability of self-inhibitive properties of a combustible gas has been proposed.
ISSN:0950-4230
DOI:10.1016/j.jlp.2007.03.017