Journal of the Korean Society of Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

The decomposition of tetrafluoromethane has been investigated with the reaction mechanism proposed for freely propagating CH4/CF4/O2/N2 premixed flames on the oxygen enrichment. The factors affecting on the removal efficiency of tetrafluoromethane were analyzed. The increase in flame temperature due to oxygen enrichment has a great influence on the removal efficiency of tetrafluoromethane. At the same oxygen enrichment condition, the removal efficiency in the rich flame is higher than one in the lean flame. The increase of the F/H ratio leads to decrease the flame temperature and the removal efficiency of tetrafluoromethan is decreased at the flame temperature of 2600 K or lower, The elementary reactions that dominate the consumption of tetrafluoromethane are (R1) CF4+M= CF3 + F + M and (R2) CF4 + H = CF3 + HF. (R1) has the greatest effect on the consumption of tetrafluoromethane under the oxygen enhanced flames.