Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Evaluation of Plant Performance during Biomass Co-firing in Pulverized Coal Power Plant

미분탄화력발전에서의 바이오매스 혼소 시 플랜트 성능특성 평가

  • Received : 2014.06.18
  • Accepted : 2014.09.03
  • Published : 2014.09.30
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Abstract

The aims of this research were to evaluate effects of biomass co-firing to pulverized coal power plants and the variation of co-firing ratios on the plant efficiency related to power consumption of auxiliary system and flue gas characteristics such as production and component by process simulation based on the existing pulverized coal power plant. In this study, four kinds of biomass are selected as renewable fuel candidates for co-firing: wood pellet(WP), palm kernel shell(PKS), empty fruit bunch(EFB) and walnut shell(WS). Process simulation for various biomass fuels and co-firing ratios was performed using a commercial software. Gas side including combustion system and flue gas treatment system was considering with combination of water and steam side which contains turbines, condenser, feed water heaters and pumps. As a result, walnut shell might be the most suitable as co-firing fuel among four biomass since when 10% of walnut shell was co-fired with 90% of coal on thermal basis, flue gas production and power consumption of auxiliary systems were the smallest than those of other biomass co-firing while net plant efficiency was relatively higher than those of other biomass co-firing. However, with increasing walnut shell co-firing ratios, boiler efficiency and net plant efficiency were expected to decrease rather than coal combustion without biomass co-firing.

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References

  1. Energy Policies of IEA Countries The Republic of Korea, Industrial Energy agency, 2012
  2. S. Van Loo, J. Koppeian, The handbook of Biomass Combustion & Co-firing, earthscan, 2008, 230-248.
  3. P. Basu, J. Butler, M.A. Leon, Biomass co-firing options on the emission reduction and electricity generation costs in coal-fired power plant, Renewable Energy. 36 (2011) 282-288. https://doi.org/10.1016/j.renene.2010.06.039
  4. J. Riaza, R. Khatami, Y.A. Levendis, L. Alvarez, M.B. Gil, C. Pevida, F. Rubiera, J.J. Pis, Combustion of single biomass particles in air and in oxyfuel conditions, Biomass Bioenergy. 64 (2014) 162-174. https://doi.org/10.1016/j.biombioe.2014.03.018
  5. F. Kazanc, R. Khatami, P.M. Crnlovic, Y.A. Levendis, Emissions of $NO_x\;and\;SO_2$ from coals of various ranks, bagasse, and coal-bagasse blends burning in $O_2/N_2\;and\;O_2/CO_2$, Energy Fuels. 25 (2011) 2850-2861. https://doi.org/10.1021/ef200413u
  6. L. Baxter, Biomass-coal co-combustion: opportunity for affordable renewable energy, Fuel. 84 (2005) 1295-1302. https://doi.org/10.1016/j.fuel.2004.09.023
  7. E. Karampinis, P. Grammelis, M. Agraniotis, I. Violidakis, E. Kakaras, Co-firing of biomass with coal in thermal power plants: technology schemes, impacts, and future perspectives, WIREs Energy Environ. doi: 10.1002/wene.100 (2013)
  8. S. Black, J. Szuhanszki, A. Pranzitelli, L. Ma, P.J. Stamger, D.B. Ingham, M. Pourkashanian, Effect of firing coal and biomass under oxy-fuel confitions in a power plant boiler using CFD modeling, Fuel. (2013) 113 780-786. https://doi.org/10.1016/j.fuel.2013.03.075
  9. J. Li, X. Zhang, E. Yang, W. Blasiak, Effects of flue gas internal recirculation on $NO_x\;and\;SO_x$ emission in a co-firing boiler, International Journal of Clean coal and Energy. (2013) 2 13-21.
  10. D. Boylan, V. Bushm D.I. Bransby, Switchgrass cofiring: pilot scale and field evaluation, Biomass Bioenergy. (2000) 19 411-417. https://doi.org/10.1016/S0961-9534(00)00052-0
  11. M.B. Nikoo, N. Mahinpey, Simulation of biomass gasification in fluidizd bed reactor using ASPEN PLUS, Biomass Bioenergy. 32 (2008) 1245-1254. https://doi.org/10.1016/j.biombioe.2008.02.020
  12. X. Pei, B. He, L. Yan, C. Wang, W. Song, J. Song, Process simulation of oxy-fuel combustion power plant using Aspen plus, Energy Convers Manage. 76 (2013) 581-587. https://doi.org/10.1016/j.enconman.2013.08.007

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