The effects of CH3Cl addition on an atmospheric pressure fuel-lean CH4/air premixed laminar flat flame

L. Wang, P. Jalvy, R. B. Barat

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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.

Original languageEnglish (US)
Pages (from-to)13-36
Number of pages24
JournalCombustion science and technology
Issue number1-3
StatePublished - Apr 1 1994

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Chemistry(all)
  • Fuel Technology


  • Inhibition
  • chlorinated hydrocarbon
  • flat flame
  • mechanism

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