Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 19, 2012
Accepted February 6, 2013

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

A comparison of spontaneous combustion susceptibility of coal according to its rank

Wantaek Jo Hokyung Choi^† Sangdo Kim Jiho Yoo Donghyuk Chun Youngjoon Rhim Jeonghwan Lim Sihyun Lee

Clean Fuel Department, Korea Institute of Energy Research, Daejeon 305-343, Korea

hkchoi@kier.re.kr

Korean Journal of Chemical Engineering, May 2013, 30(5), 1034-1038(5), 10.1007/s11814-013-0018-7

Download PDF

Abstract

This study investigated spontaneous combustion susceptibility of coal according to the rank. To estimate the spontaneous combustion susceptibility of coal, both crossing-point temperature (CPT) measurement and gas analysis by using gas chromatography (GC) were performed. For the experiment, Eco coal and Kideco coal, Indonesian lignite, and Shenhua coal that is Chinese bituminous coal were used. The lignite such as Eco coal and Kideco coal contains more functional groups that easily react to oxygen more so than Shenhua coal. For this reason, the lignite is more easily oxidized than bituminous coal at low temperature, which results in high O2 consumption, increase in CO and CO2 generation, and low CPT. Although the CPT of Eco coal and Kideco coal is identical to each other as they are the lignite, Kideco coal has a lower initial oxidation temperature (IOT) and maximum oxidation temperature (MOT) than those of Eco coal. This means that although each coal has the same rank and CPT, spontaneous combustion susceptibility of coal may vary because the initial temperature of the coal at which oxidation begins may be different due to the substances that participate in oxidation.

Keywords

Coal Rank Crossing-point Temperature Spontaneous Combustion Low Temperature Oxidation

References

Choi H, Thiruppathiraja C, Kim S, Rhim Y, Lim J, Lee S, Fuel Process. Technol., 92(10), 2005 (2011)
Cho W, Kim S, Choi H, Rhim Y, Lim J, Lee S, Yoo J, Korean J. Chem. Eng., 29(2), 190 (2012)
Beamish BB, Barakat MA, St George JD, Thermochim. Acta, 362(1-2), 79 (2000)
Beamish BB, Hamilton GR, Int. J. Coal Geol., 64(1-2), 133 (2005)
Sen R, Srivastava SK, Singh MM, Indian J. Chem. Technol., 16(2), 103 (2009)
Pis JJ, Delapuente G, Fuente E, Moran A, Rubiera F, Thermochim. Acta, 279, 93 (1996)
Nohalik NK, Panigrahi DC, Singh VK, J. Therm. Anal. Calorim., 98, 507 (2009)
Cern S, Ibrahim C, Trends. Appl. Sci. Res., 1, 9 (2006)
Nubling R, Wanner H, J. Gasbeleucht., 58, 515 (1915)
Qi XY Wang DM, Milke JA, Zhong XX, Mining Sci.Technol., 21, 255 (2011)
Kucuk A, Kadioglu Y, Gulaboglu MS, Combust. Flame, 133(3), 255 (2003)
Kaji R, Hishinuma Y, Nakamura Y, Fuel., 64, 297 (1985)
Behera P, Mohanty G, J. Sci. Res., 1, 55 (2009)
Li ZH, Wang YL, Song N, Yang YL, Procedia Earth and Planetary Sci., 1, 123 (2009)
Bagchi S, J. Mine. Metals and Fuels., 13(8), 243 (1965)
Qi XY, Wang DM, James AMK, Zhong XX, Int. J. Mining Sci. Technol., 22, 169 (2012)
Yuan LM, Smith AC, Int. J. Coal Geol., 88(1), 24 (2011)
Carras JN, Young BC, Prog. Energy Combust. Sci., 20, 1 (1994)
Baris K, Kizgut S, Didari V, Fuel, 93(1), 423 (2012)
Olayinka IO, Randy JM, Fuel., 70, 258 (1991)
Wang DM, Zhong XX, Gu J, Qi XY, Mining Sci. Technol., 20, 35 (2010)