The inhibitory effects of CH3Cl on an atmospheric pressure fuel-lean CH/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 CHCl in the feed (at a fixed Φ) 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 Cl atom is a dominant radical in the CH3Cl/CH4 flames. For fuel-lean conditions, the inhibitory effect results primarily from the slowdown of CO burnout by OH due to depletion of OH by HCl, which is generated primarily from fast H abstractions by Cl.
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Physics and Astronomy(all)
- Chemical Engineering(all)
- Fuel Technology
- chlorinated hydrocarbon
- flat flame