Abstract
Understanding the ignition behaviour of coal is of utmost importance for the design of boilers and control of the combustion process. In recent years there has been an increasing utilisation of coal blends for combustion, but information on the possible interactive effects during ignition of the individual components is scarce. In this work the ignition behaviour of a series of coal blends, made up from three coals of different rank, sub-bituminous, high volatile and low volatile bituminous, was studied. To this end a thermogravimetric analyser linked to a mass spectrometer for evolved gas analysis was used. Different ignition behaviour was observed for the coals studied; the sub-bituminous and low volatile bituminous coals ignited heterogeneously, while homogeneous ignition occurred for the high volatile bituminous coal. In the case of blends of the low and high volatile bituminous coals, different mechanisms of ignition were observed depending on the blends composition.
Similar content being viewed by others
References
J. Haas, M. Tamura and R. Weber, Fuel, 80 (2001) 1317.
J. P. Smart and T. Nakamura, J. Inst. En., 66 (1993) 99.
R. H. Essenhigh, M. K. Misra and D. W. Shaw, Combust. Flame, 77 (1989) 3.
C. L. Sun and J. A. Kozinski, Fuel, 79 (2000) 1587.
D. K. Zhang and T. F. Wall, Fuel, 73 (1994) 1114.
C. Herbig and A. Jess, Fuel, 81 (2002) 2387.
Y. Chen and S. Mori, Energy Fuels, 9 (1995) 71.
P. Pranda, K. Prandova and V. Hlavacek, Fuel Proc. Techn., 61 (1999) 211.
S. Liodakis, D. Bakirtzis and E. Lois. J. Therm. Anal. Cal., 69 (2002) 519.
T. Grotkjaer, K. Dam-Johansen, A. D. Jensen and P. Glarborg, Fuel, 82 (2003) 825.
M. V. Kök, J. Therm. Anal. Cal., 68 (2002) 1061.
J. J. Pis, G. de la Puente, E. Fuente, A. Moran and F. Rubiera, Thermochim. Acta, 279 (1996) 93.
F. Rubiera, A. Moran, O. Martínez and E. Fuente and J. J. Pis, Fuel Proc. Techn., 52 (1997) 165.
A. Arenillas, F. Rubiera and J. J. Pis, J. Anal. Appl. Pyrolysis, 50 (1999) 31.
Y. Chen, S. Mori and W. P. Pan, Thermochim. Acta, 275 (1996) 149.
S. Su, J. H. Pohl, D. Holcombe and J. A. Hart, Prog. Energy Combust. Sci., 27 (2001) 75.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Arenillas, A., Rubiera, F., Arias, B. et al. A TG/DTA study on the effect of coal blending on ignition behaviour. Journal of Thermal Analysis and Calorimetry 76, 603–614 (2004). https://doi.org/10.1023/B:JTAN.0000028039.72613.73
Issue Date:
DOI: https://doi.org/10.1023/B:JTAN.0000028039.72613.73