World Academy of Science, Engineering and Technology
Published April 21, 2011 | Version 4929
Journal article Open

On Unburned Carbon in Coal Ash from Various Combustion Units

Description

Work is focused to the study of unburned carbon in ash from coal (and wastes) combustion in 8 combustion tests at 3 fluidised-bed power station, at co-combustion of coal and wastes (also at fluidized bed) and at bench-scale unit simulating coal combustion in small domestic furnaces. The attention is paid to unburned carbon contents in bottom ashes and fly ashes at these 8 combustion tests and to morphology of unburned carbons. Specific surface area of coals, unburned carbons and ashes and the relation of specific surface area of unburned carbon and the content of volatile combustibles in coal were studied as well.

Files

4929.pdf

Files (586.2 kB)

Name Size Download all
md5:5684eb38bb781ed8b6a9663dfdd077f7
586.2 kB Preview Download

Additional details

References

  • http://www.worldcoal.org/coal/uses-of-coal/coal-electricity (10.1.2011). Coal & Electricity.
  • J. C. Chen, M. Y. Weyu, and W. Y. Ou, "Capture of heavy metals by sorbents in incineration flue gas," The Science of the Total Environment, vol. 228, pp. 67-77, 1999.
  • H. Yao, S. N. Mkilaha, and I. Naruse, "Screening of sorbents and capture of lead and cadmium compounds during sewage sludge combustion," Fuel, vol. 83, pp. 1001-1007, 2004.
  • J. C. Hower, A. S. Trimble, C. F. Eble, C. A. Palmer, and A. Kolker, " Charakterization of fly ash from low-sulphur and high-sulphur coal sources: partitioning of carbon and trace elements with particle size," Energy Sources, vol. 21, no. 6, pp. 511-522, 1999.
  • J. C. Hower, M. Maroto-Valer, D. N. Taulbee, and T. Sakulpitakphon, "Mercury capture by distinct fly ash carbon forms," Energy and Fuels, vol. 14, pp. 224-226, 2000. .
  • S. Serre, and G. Silcox, "Adsorption of Elemental Mercury on the Residual Carbon in Coal Fly Ash," Ind. Eng. Chem. Res., vol. 39, pp. 1723-1730, 2000.
  • D. J. Hasset and K. E. Eylands, "Mercury capture on coal combustion fly ash," Fuel, vol. 78, pp. 243-248, 1999.
  • L. Bartonov├í, Z. Klika, and A. D. Spears, "Characterization of unburned carbon from ash after bituminous coal and lignite combustion in CFBs," Fuel, vol. 86, pp. 455-463, 2007.
  • Z. Klika, L. Bartonov├í, A. and D. Spears, "Effect of boiler output on trace element partitioning during coal combustion in two fluidised-bed power stations," Fuel, vol. 80, pp. 907-917, 2001. [10] L. Bartonov├í, Z. Klika and A. D. Spears, and O. ┼áustai, "Unburned carbon from ash after coal combustion in CFBs in relation to trace elements behaviour," in 2005 Proc. FILTECH Conf., Wiesbaden, Germany, pp. 329-336.