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The ratio NO2NO in fuel-lean flames

✍ Scribed by C.P. Fenimore

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
347 KB
Volume
25
Category
Article
ISSN
0010-2180

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✦ Synopsis

In fuel-lean premixed flames at atmospheric pressure, containing about 100 ppm of nitrogen oxides, the ratio NO2/NO is large in the primary reaction zone. The ratio decreases in the post-flame gas where super-equilibrium concentrations of O, OH, etc., also decrease. During the decrease, the equilibrium

is approximately satisfied, and a possible mechanism to maintain (2) can be suggested. The equilibrium fails in cooler gas: At around 1200 Β°K or less, NO2/NO is quenched and no longer remains balanced with the concentration of O atoms.

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