The Effects of CH3CI Addition on an Atmospheric Pressure Fuel-Lean CH4/Air Premixed Laminar Flat Flame
- 1 April 1994
- journal article
- research article
- Published by Taylor & Francis in Combustion Science and Technology
- Vol. 97 (1-3) , 13-36
- https://doi.org/10.1080/00102209408935366
Abstract
The inhibitory effects of CH3CI on an atmospheric pressure fuel-lean CH4/air premixed laminar flat flame are investigated through stable species (water-cooled quartz microprobe and gas chromatography) concentration measurements and detailed chemical modeling. Varying degrees of CH3CI in the feed (at a fixed π) result in consistently higher observed CO/CO2 molar concentration ratios at all heights-above-burner.Modeling of these flames with detailed elementary reaction mechanisms yields predicted stable species concentration profiles which are consistent with the experimental observations. Rate-of-production analyses derived from the modeling indicates that the CI atom is a dominant radical in the CH3CI/CH4 flames. Forfuel-lean conditions, the inhibitory effect results primarily from the slowdown of CO burnout by OH due to depletion of OH by HCI, which is generated primarily from fast H abstractions by CI.Keywords
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