Ignition of Fuel Slurries Based on Waste Products of Coal Processing and Oil Refining

Results of an experimental study of conditions and characteristics of ignition of fuel slurries prepared on the basis of typical waste products of coal washing 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 slurries prepared on the basis of coal washing waste products (nonbaking, coking, low-caking, fat, gas, and flame coals are considered). The ignition delay time and the minimum (threshold) temperature of ignition of the examined slurries are estimated. Conclusions on the influence of the properties and concentrations of the slurry components on the combustion initiation characteristics are formulated.