KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
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Co-combustion of Bituminous Coal with Anthracite in a Down-firing, 200 MW Boiler

  • Park, Ho Young (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Baek, Se Hyun (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Kim, Young Joo (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Kim, Tae Hyung (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Kim, Hyun Hee (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Lim, Hyun Soo (KEPCO Research institute, Korea Electric Power Corporation) ;
  • Park, Yoon Hwa (KEPCO Research institute, Korea Electric Power Corporation)
  • Published : 2015.09.30
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Abstract

The combustion tests for Korean anthracite-bituminous coal blend were carried out in the 200 MW utility boiler. The burning characteristics of the blend were studied with a thermogravimetric analyzer (TGA). From the observation of TGA burning profiles, it was found that the presence of bituminous coal in the blend appeared to enhance the reactivity of anthracite in the higher temperature region, indicating certain interactions between the two coals. The plant test showed the boiler operation was reasonably stable with somewhat poor combustion efficiency, and some modification of the combustion environment in the furnace is necessitate for the further stable plant operation.

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References

  1. Carpenter AM , "Coal blending for power stations", IEA Coal Research, IEA CCC/81; 1995.
  2. Su S, Pohl JH, Holcomb D, Hart JA, "Techniques to determine ignition, flame stability and burnout of blended coals in p.f. power station boilers", Prog Energy Combust Sci,27, pp.75-98, 2001. https://doi.org/10.1016/S0360-1285(00)00006-X
  3. Riley JT, Gilleland SR, Forsythe RF, Graham HD, Hayes FJ, "Non-additive analytical values for coal blends", In: Proceedings of the 7th international conference on coal testing, pp.32-38, 1989.
  4. Pan WP, Gan Y, Serageldin MA , "A study of thermal analytical values for coal blends burned in an air atmosphere", Thermochimica Acta, 180, pp.203-217, 1991. https://doi.org/10.1016/0040-6031(91)80391-U
  5. Pisupati SV, Scaroni AW, "Prediction of combustion behavior of coal blends in industrial scale boilers from laboratory scale data", Proceedings ICCS'97, 1997.
  6. Artos V, Scaroni AW, "T.g.a. and drop-tube reactor studies of the combustion of coal blends", Fuel, 72, pp.927-933, 1993. https://doi.org/10.1016/0016-2361(93)90289-E
  7. Artos V, Scaroni AW, "TGA reactivities and burning profiles of coal blends" In: Ninth Annual International Pittsburgh Coal Conference, 1992.
  8. Qiu J, Guo J, Zeng H, Ma Y, "Research on pyrolysis kinetics and mechanisms of blended pulverized coal", In: Confernece proceedings, 7th International Conference on coal science, 1993.
  9. Vamvuka D, Kastanaki E, Lasithiotakis M, "Devolatilization and combustion kinetics of low-rank coal blends from dynamic measurements", Ind. Eng.Chem. Res, 42, pp.4732-4740, 2003. https://doi.org/10.1021/ie020758m
  10. Biswas S., Choudhury N, Sarkar P, Mukherjee A, Sahu SG, Boral P, Choudhury A, "Studies on the combustion behaviour of blends of Indian coals by TGA and Drop Tube Furnace", Fuel Processing Technology, 87, pp.191-199, 2006. https://doi.org/10.1016/j.fuproc.2005.05.002
  11. Cumming J W, "A DTG combustion study on anthracite and other coal chars", Thermochimita Acta, 155, pp.151-161, 1989. https://doi.org/10.1016/0040-6031(89)87143-6
  12. Rubiera F, Arenillas A, Arias B, Pis JJ, "Modification of combustion behavior and NO emissions by coal blending", Fuel Processing Technology, 77, pp.111-117, 2002.
  13. Smith KL, Smoot LD, Fletcher TH, Pugmire RJ, "The structure and reaction process of coal", New York; Plenum Press, 1994.
  14. Benson SS, "Ash formation and behavior in utility boilers", www.microbeam.com, 2008.
  15. Lloyd WG, Riley JT, Zhou S, Risen MA, Tibbitts RL, "Ash fusion temperature under oxidizing conditions", Energy & Fuels, 7, pp.490-494, 1993. https://doi.org/10.1021/ef00040a009
  16. Kastanaki E, Vamvuka D, "A comparative reactivity and kinetic study on the combustion of coal-biomass char blends", Fuel, 85, pp.1186-1193, 2006. https://doi.org/10.1016/j.fuel.2005.11.004