Effect of the Devolatilization Process on PM10 Formation during Oxy-fuel Combustion of a Typical Bituminous Coal

The devolatilization process has important influence on the formation of PM10 (particulate matter with an aerodynamic diameter of ≤10.0 μm) in oxy-fuel combustion of pulverized coal but has been explored little. A bituminous coal was devolatilized in either CO2 or N2 at 1573 K on a drop-tube furnace...

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Bibliographic Details
Published in:Energy & fuels 2014-09, Vol.28 (9), p.5682-5689
Main Authors: Wen, Chang, Yu, Dunxi, Wang, Jianpei, Wu, Jianqun, Yao, Hong, Xu, Minghou
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
Online Access:Get full text
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Summary:The devolatilization process has important influence on the formation of PM10 (particulate matter with an aerodynamic diameter of ≤10.0 μm) in oxy-fuel combustion of pulverized coal but has been explored little. A bituminous coal was devolatilized in either CO2 or N2 at 1573 K on a drop-tube furnace (DTF) to produce CO2-char and N2-char. Coal and its char samples were burned at 1573 K and in 29 vol % O2/71 vol % CO2. PM10 was collected and segregated into 13 size fractions, which were subjected to subsequent analysis. The results show that the particle mass size distributions of PM10 from coal and chars have similar peak and trough sizes, suggesting that the devolatilization process has insignificant influence on the major pathways of PM10 formation. Three particle modes can be identified, i.e., ultrafine mode (
ISSN:0887-0624
1520-5029
DOI:10.1021/ef501264v