Theoretical Studies on the Ignition and Burning Rate of Pulverized Coal
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概要
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In this paper, the ignition of pulverized coal by radiation is dealt with first. Three kinds of heat are taken account of : heat radiated from high temperature bodies, such as flame and furnace wall, to the pulverized coal particle ; heat transferred from the particle to the surrounding air, and heat caused by chemical reactions on the particle's surface. Thus we show how the particle starts to ignite and what effects various factors such as ash in coal, primary air/coal ratio, size of coal, and temperature of heat source would have on the ignition. Next, we show the correlation between the unburned fraction of fixed carbon in coal and the furnace combustion rate, modifying the Hottel's method, and its correction curves according to the size of particles and excess air ratio.
- 一般社団法人日本機械学会の論文