Ignition of fuel suspensions based on waste products of coal and oil enrichment

Results of an experimental study of conditions and characteristics of ignition of fuel suspensions prepared on the basis of typical waste products of coal enrichment and oil refining are reported. The main attention is paid to analyzing the differences in the characteristics and conditions of ignition of organic coal-water fuels prepared on the basis of coal enrichment waste products (lean, caking, low-caking, fat, gas, and long-flame coals are considered). The ignition delay time and the minimum (threshold) temperature of ignition of the examined fuels are estimated. Conclusions on the influence of the properties and concentrations of the fuel components on the combustion initiation characteristics are formulated.