Citation: ZHANG Ping-an, YUAN Jing, YU Dun-xi, LUO Guang-qian, YAO Hong. Influence of different distributions of Ca-mineral in coal on trimodal particulate matter formation during combustion[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(3): 273-278. shu

Influence of different distributions of Ca-mineral in coal on trimodal particulate matter formation during combustion

1.
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
2.
Middle Changjiang River Bureau of Hydrology and Water Resources Survey, Wuhan 430012, China

Corresponding author: YAO Hong, hyao@mail.hust.edu.cn
Received Date: 15 October 2015
Revised Date: 6 January 2016

Fund Project: The project was supported by the Science and technology support program of Hubei Province 2014BCB040

Figures(10)

Calcium acetate was added into a bituminous coal through physically blending and impregnation to obtain the ble-Ca coal rich in excluded Ca-mineral and imp-Ca coal rich in included Ca-mineral, respectively. The raw coal, ble-Ca coal and imp-Ca coal were burned in a drop tube furnace at 1300℃. The generated particulate matters (PMs) were collected and analyzed to study the influence of different distributions of Ca-mineral in coal on trimodal PM formation during combustion. The results showed that for the three coals, PMs with the ultrafine mode, central mode and coarse mode were all in the size range of < 0.2μm, 0.2-2μm and >2μm, respectively. The included and excluded Ca-minerals can both promote the formation of ultrafine mode PM, and the excluded one had more significant effect. The included Ca-mineral can restrain, while the excluded one can promote the formation of central mode PM. The included Ca-mineral can promote the formation of coarse mode PM, while the excluded one did not have obvious effect.
- coal combustion,
- coal matrix,
- included mineral,
- excluded mineral,
- particulate matter,
- formation mode
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