Combustion and emission behavior of 100 % steam coal (SET 1) and a mixture of 80 % by weight steam coal and 20 % by weight local lignite, characterized by high sulfur and ash contents, (SET 2) were investigated in the 0.3 MWt Middle East Technical University (METU) Atmospheric Bubbling Fluidized Bed Combustor (ABFBC) Test Rig. Experiments were performed with limestone addition at various Ca/S molar ratios with fines recycle. In both sets of experiments, parameters other than Ca/S molar ratio were held as nearly constant as possible. On-line measurements of O2, CO2, CO, SO2, NOx emissions were carried out. Comparisons between the emissions show that lower NOx and SO2 emissions are obtained from combustion of steam coal/lignite mixture compared to those from steam coal only despite higher sulfur and almost equal nitrogen contents of the mixture. Calculated combustion efficiencies were found to be around 98 and 96 % for SET 1 and SET 2, respectively. As for the sulfur retention efficiencies, up to three times higher efficiencies were achieved when steam coal is co-fired with high sulfur lignite.
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18th International Conference on Fluidized Bed Combustion
May 22–25, 2005
Toronto, Ontario, Canada
Conference Sponsors:
- Advanced Energy Systems
ISBN:
0-7918-4183-9
PROCEEDINGS PAPER
Co-Firing of Steam Coal With High Sulfur Content Lignite in a Bubbling Fluidized Bed Combustor
Nevin Selc¸uk,
Nevin Selc¸uk
Middle East Technical University, Ankara, Turkey
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Yusuf Gogebakan,
Yusuf Gogebakan
Middle East Technical University, Ankara, Turkey
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Hakan Altindag
Hakan Altindag
Middle East Technical University, Ankara, Turkey
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Nevin Selc¸uk
Middle East Technical University, Ankara, Turkey
Yusuf Gogebakan
Middle East Technical University, Ankara, Turkey
Hakan Altindag
Middle East Technical University, Ankara, Turkey
Paper No:
FBC2005-78067, pp. 353-358; 6 pages
Published Online:
October 7, 2008
Citation
Selc¸uk, N, Gogebakan, Y, & Altindag, H. "Co-Firing of Steam Coal With High Sulfur Content Lignite in a Bubbling Fluidized Bed Combustor." Proceedings of the 18th International Conference on Fluidized Bed Combustion. 18th International Conference on Fluidized Bed Combustion. Toronto, Ontario, Canada. May 22–25, 2005. pp. 353-358. ASME. https://doi.org/10.1115/FBC2005-78067
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