Abstract
A method of studying the rate of combustion of suspended single droplets of liquid fuels by means of continuously recording microbalance is described. The technique has been applied to a range of alternative liquid fuel combinations and to coal/oil mixtures. Experimental data are presented on the continuous variation of diameter and mass of burning droplets as a function of time for the various fuel combination burning in air at 850 C. The results are analyzed in terms of D2 rate constants and mass burning rate constants. The influence of fuel composition and, in particular, of the asphaltene content, coal content in the coal/oil mixtures, and the influence of water emulsification are analyzed. In addition, some data are given on ignition delay times.
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