INHIBITION OF DETONATION-WAVE WITH HALOGENATED COMPOUNDS

The influence of CF3Br, CF2HBr, CF2HCl and CF3H on a benchmark mixture composed of stoichiometric H-2-CO-O-2-Ar is experimentally investigat ed. Several ratios hydrogen/carbon monoxide are studied. For each benc hmark mixture, the initial pressure is adjusted in such a way that the detonation cell sizes are quasi identical. The effect of the additive s on the detonation velocity and the detonation cellular structure is analyzed. The experiments show that CF3Br is the best inhibitor and CF 2HBr might be substituted for CF3Br. CF3H does not inhibit the detonat ion wave. Simple chemical kinetics analysis gives us a better understa nding of the inhibiting and promoting effect of the halocarbons.