Abstract
Combustion of coal was studied in a drop tube furnace to understand particulate matter (PM10) emission and its characteristics. Experimental conditions were selected as follows: The coal particle size was divided into three sizes, 100−200 μm, 63−100 μm, and smaller than 63 μm. The reaction temperature was 1423, 1523, and 1673 K, respectively. The oxygen content was 20% and 50%, respectively. PM10 was collected with a 13 stage low-pressure impactor (LPI) having an aerodynamic cutoff diameter ranging from 10.0 to 0.03 μm for a size-segregated collection. The properties of the PM including its concentration, particle size distribution, and elemental composition were investigated. The experimental results indicate that the emitted PM10 has a bimodal distribution with two peaks around 4.0 and 0.1 μm. The reaction temperature, coal particle size, and oxygen content affect PM10 emission significantly. Increasing the temperature and oxygen content and decreasing the coal particle size lead to the formation of mo...
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