Abstract
Diffusion flames are described in which the fuels, hydrogen, carbon monoxide, carbon disulphide, water, ammonia, hydrocarbons and organichalides are burnt with chlorine trifluoride. Chemical equilibrium is almost complete in the main reaction zone as in oxygen diffusion flames, but the chlorine trifluorido flames possess several unusual features. Carbon formation is very pronounced with hydrocarbon fuels. Radicals such as C
2
and CN have a large partial pressure in mixed hydrogen +hydrocarbon/chlorine trifluoride flames, and their presence in a high-tem perature region enhances the luminosity of the flames. It is suggested that the persistence of these radicals may be due to the very rapid diffusion of hydrogen into the main reaction zone which effectively prevents the penetration of fluorine to the fuel side of the flame. Chlorine trifluoride flames are briefly com pared with fluorine flames.
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