Abstract
A 244-reaction mechanism containing 60 species was used with the PREMIX computer program to model a stoichiometric carbon tetrachloride-methane-air flat flame with a Cl H ratio of 0.33. The flame was found to progress in three stages, an initiation stage, a chlorine inhibited oxidation stage, and a CO burnout stage. Some important reactions occurring in each stage were identified. The simulation showed that a lack of CH 3 radicals inhibited the highly exothermic oxidation reaction O + CH 3 = CH 2O + H. As a result, the less energetic oxidation of acetylene, O + C 2H 2 = CH 2 + CO, became the dominant oxidation reaction. CO burnout was found to begin when hydroxyl radicals became available through the reactions O + HCl = OH + Cl and O + H 2O = OH + OH.
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