Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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A Study on Characteristics of Combustion and Thermo Pyrolysis in Co-firing with Pulverized Coal and Wood Biomass

미분탄과 목재 바이오매스 혼합 연료의 연소 및 열분해 특성에 관한 연구

  • 안재우 (부산대학교 기계공학과 대학원) ;
  • 안성율 (부산대학교 기계공학과 대학원) ;
  • 문철언 (부산대학교 기계공학과 대학원) ;
  • 성연모 (부산대학교 기계공학과 대학원) ;
  • 서상일 (전력연구원) ;
  • 김태형 (전력연구원) ;
  • 최경민 (부산대학교 기계공학부) ;
  • 김덕줄 (부산대학교 기계공학부)
  • Received : 2010.05.12
  • Accepted : 2010.06.24
  • Published : 2010.06.30
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Abstract

The effect of co-firing with pulverized coal and wood biomass on ignition and burn-out temperature was investigated at air and oxy-fuel conditions by thermo gravimetric analyzer(TGA). Three kinds of coal(shenhua, adaro, wira) were selected and mixing ratios of coal and wood biomass was set to 1, 0.5, and 0.8. The ignition temperature depended on the amount of volatile matter of blended fuel, while the burn-out temperature was dominated by the oxidant ingredients. The oxy-fuel condition with an oxygen ratio(Ofr,o) of 0.3 showed similar tendency with air condition in the heat flow measurement. Volatile matter reaction, however, became dominant when oxygen ratio exceeded 0.8 for co-firing combustion of wood biomass and pulverized coal.

Keywords

References

  1. Lee si hyun, Hyun ju young, Rhim young jun, Park young ok, Kim sung chul, "Coal/Biomass Cofiring in utility boilers", Journal of Energy Engineering, 2003, pp. 197-200
  2. M. Sami, K. Annamalai, M. Wooldridge, "Cofiring of coal and biomass fuel blends", Progress in Energy and Combustion Science, 2001, pp. 171-214
  3. A. Willians, M. Pourkashaniam, j.M. jones, "Combustion of pulverised coal and biomass", Progress in Energy and Combustion Science, 2001, pp. 587-610
  4. Edward Lester, Mei Gong, Alan Thompson, "A method for source apportionment in biomass/coal blends using thermogravimetric analysis", J. Anal. Appl. Pyrolysis, 2007, pp. 111-117
  5. Qingzhao Li, Changsui Zhao, Xiaoping Chen, Weifang Wu, Yingjie Li, "Comparison of pulverized coal combustion in air and in $O_2/CO_2$ mixtures by thermo-gravimetric analysis", J. Anal. Appl. Pyrolysis, 2009, pp. 521-528
  6. Yong Chen, Shigekatsu Mori, Wei-Ping Pan, "Studying the mechanisms of ignition og coal particles by TG-DTA", Thermochimica Acta, 1996, pp. 149-158
  7. A.G. BorregoL, Garavaglia, W.D. Kalkreuth, "Characteristics of high heating rate biomass chars prepared under $N_2$ and $CO_2 $atmospheres", International Journal of Coal Geology, 2009, pp. 409-415
  8. S. P. Marinov, L. Gonsalvesh, M. Stefanova, J. Yperman, R. Carleer, G. Reggers, Y. Yurum,V, Groudeva, P. Gadjanov, "Combustion behaviour of some biodesulphurized coals assessed by TGA/ DTA", Thermochimica Acta, 2010, pp. 46-51
  9. Qingzhao Li, Changsui Zhao, Xiaoping Chen, Weifang Wu, Yingjie Li, "Comparison of pulverized coal combustion in air and in $O_2/CO_2$ mixtures by thermo-gravimetric analysis", J. Anal. Appl. Pyrolysis xxx, 2008
  10. Nandita Choudhury, S. Biswas, P. Sarkar, Manish Kumar, Sujit Ghosal, Tandra Mitra A. Mukherjee, A. Choudhury, "Influence of rank and macerals on the burnout behaviour of pulverized Indian coal", International Journal of Coal Geology, 2008, pp. 145-153
  11. S.G. Sahu, P. Sarkar, N. Chakraborty, A.K. Adak, "Thermogravimetric assessment of combustion characteristics of blends of a coal with different biomass chars", Fuel Processing Technology, 2010, pp. 369-378
  12. Terry Wall, Yinghui Liu, Chris Spero, Liza Elliott, Sameer Khare, Renu Rathnam, Farida Zeenathal, Behdad Moghtaderi, Bart Buhre, Changdong Sheng, Raj Gupta, Toshihiko Yamada, Keiji Makino, Jianglong Yu, "An overview on oxyfuel coal combustion-State of the art research and technology development", chemical engineering research and design, 2009, pp. 1003-1016
  13. Alejandro Molina, Peter Arendt Jensen, Anker Degn Jensen, "Ignition and devolatilization of pulverized bituminous coal particles during oxygen/ carbon dioxide coal combustion", Proceedings of the Combustion Institute, 2007, pp. 1905- 1912
  14. Jacob Brix, Liza K. Elliott, Terry F. Wall, Yinghui Liu, Behdad Moghtaderi, "Coal devolatilization and char conversion under suspension fired conditions in $O_2/N_2$ and $O_2/CO_2$ atmospheres", Fuel, 2010
  15. Renu Kumar Rathnam, Christopher R. Shaddix, "Differences in reactivity of pulverised coal in air ($O_2/N_2$) and oxy-fuel ($O_2/CO_2$ ) conditions", Fuel Processing Technology, 2009, pp. 797-802