Abstract
The low temperature oxidation and spontaneous combustion characteristics of dried coal produced from low rank coal using the upgraded brown coal (UBC) process were investigated. To this end, proximate properties, crossing-point temperature (CPT), and isothermal oxidation characteristics of the coal were analyzed. The isothermal oxidation characteristics were estimated by considering the formation rates of CO and CO2 at low temperatures. The upgraded low rank coal had higher heating values than the raw coal. It also had less susceptibility to low temperature oxidation and spontaneous combustion. This seemed to result from the coating of the asphalt on the surface of the coal, which suppressed the active functional groups from reacting with oxygen in the air. The increasing upgrading pressure negatively affected the low temperature oxidation and spontaneous combustion.
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References
Sugita S, Deguchi T, Shigehisa T, Katsushima S, Makino E, Otaka Y. Demonstration of UBC process in Indonesia – upgrading of low rank coal. In: Proceedings of the International Conference on Coal Science and Technology, Okinawa; 2005.
Kinoshita S, Yamamoto S, Deguchi T, Shigehisa T. Demonstration of upgraded brown coal (UBC) process by 600 tonnes/day plant. Kobelco Technol Rev. 2010;29:93–8.
Kaji R, Muranaka Y, Otsuka K, Hishinuma Y. Water absorption by coals: effects of pore structure and surface oxygen. Fuel. 1986;65:288–91.
Umar DF, Usui H, Daulay B. Change of combustion characteristics of Indonesian low rank coal due to upgraded brown coal process. Fuel Process Technol. 2006;87:1007–11.
Carras JN, Young BC. Self-heating of coal and related materials: models, application and test methods. Prog Energy Combust Sci. 1994;20:1–15.
Ogunsola OI, Mikula RJ. Effect of thermal upgrading on spontaneous combustion characteristics of western Canadian low rank coals. Fuel. 1992;7:3–8.
Küçük A, Kadıoğlu Y, Gülaboğlu MŞ. A study of spontaneous combustion characteristics of a Turkish lignite: particle size, moisture of coal, humidity of air. Combust Flame. 2003;133:255–61.
Wang H, Dlugogorski BZ, Kennedy EM. Experimental study on low-temperature oxidation of an Australian coal. Energy Fuels. 1999;13:1173–9.
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© 2013 Springer-Verlag Berlin Heidelberg & Tsinghua University Press
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Choi, H.K., Kim, S.D., Yoo, J.H., Chun, D.H., Rhim, Y.J., Lee, S.H. (2013). Low Temperature Oxidation and Spontaneous Combustion Characteristics of Upgraded Low Rank Coal. In: Qi, H., Zhao, B. (eds) Cleaner Combustion and Sustainable World. ISCC 2011. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30445-3_13
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DOI: https://doi.org/10.1007/978-3-642-30445-3_13
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