A coal char ignition temperature at elevated pressure is important particularly in understanding the fundamental phenomena for combustion zone of coal gasification. The ignition temperature of coal char particle is obtained by a direct measurement of ...
A coal char ignition temperature at elevated pressure is important particularly in understanding the fundamental phenomena for combustion zone of coal gasification. The ignition temperature of coal char particle is obtained by a direct measurement of the particle temperature with photo detector as well as by means of a solid thermocouple which is used as both a heating and a measuring element. The ignition temperatures for subbituminous coal wira of 0.8㎜ diameter have been measured at 4 different ambient pressures in the ranging from 1 to 15bar in constant volume chamber. The result shows that the coal char ignition temperature deceases with increasing ambient pressure due to an enhanced rate of heat generation. The numerical result is agreement with an experimental data.