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Research on formation and emission of inhalant particulate matters at different oxygen content during coal combustion

Liu, X-W, Xu, M-H, Yu, D-X, Yu, Y., Gao, X-PORCID: 0000-0003-2491-8169 and Cao, Q. (2006) Research on formation and emission of inhalant particulate matters at different oxygen content during coal combustion. Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 26 (15). pp. 46-50.


Combustion of two kinds of pulverized coal was studied in a drop tube furnace to understand the emission, elemental composition and formation mechanism of inhalant particulate matter (PM) at different oxygen. Experimental conditions were selected as following: two coals were divided into two sizes, small than 63 μm and 63-100 μm, reaction temperature was 1250 °C, oxygen content was 20% and 50% respectively. PM was collected with a 13 stages Low-Pressure-Impactor (LPI) having aerodynamic cut-off diameter ranging from 10.0 to 0.03 μm for a size-segregated collection. The Experimental results indicated that, oxygen content affected PM emission and elemental composition significantly in the combustion. Between the two coal particle sizes, increasing oxygen content leaded to much increase of emitted PM, what's more, fine particle sizes increased more. In the submicron particulate matter (PM1), elemental sulfur was greatly decreased with the increase of oxygen content, in contrast, elemental iron, silicon and aluminum were greatly increased with oxygen content, between the three of them, the extent of elemental silicon increased was most. In the coarse particulate matter (PM1-10), alone with increase of oxygen content, elemental sulfur was little decreased and elemental iron, silicon and aluminum were little increased. Between PM1 and PM1-10, varied oxygen content had more influence on PM1.

Item Type: Journal Article
Publisher: Chinese Society for Electrical Engineering
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