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Research on the Gas Reburning in a Circulating Fluidized Bed (CFB) System Integrated with Biomass Gasification

Author

Listed:
  • Xiaoying Hu

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China)

  • Tao Wang

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China)

  • Zhihui Dong

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China)

  • Hanfei Zhang

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China)

  • Changqing Dong

    (National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China)

Abstract

N 2 O emissions from coal fired fluidized-bed combustion are approximately 30–360 mg/Nm 3 , much higher than that from pulverized coal combustion (less than 30 mg/Nm 3 ). One approach to reduce the N 2 O is to reburn the biomass gasification gas in the coal-fired fluidized bed. In this paper, the effects of gasified biomass reburning on the integrated boiler system were investigated by both simulation and experimental methods. The simulation as well as experimental results revealed that the increase of the reburning ratio would decrease the theoretical air volume and boiler efficiency, while it would increase the fuel gas volume, combustion and exhuast gas temperature. The experimental results also indicated that the N 2 O removal could reach as high as 99% when the heat ratio of biomass gas to coal is 10.5%.

Suggested Citation

  • Xiaoying Hu & Tao Wang & Zhihui Dong & Hanfei Zhang & Changqing Dong, 2012. "Research on the Gas Reburning in a Circulating Fluidized Bed (CFB) System Integrated with Biomass Gasification," Energies, MDPI, vol. 5(9), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:5:y:2012:i:9:p:3167-3177:d:19653
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    Cited by:

    1. Xiang Gou & Zifang Wang & Yurou Liu & Meng Si & Surjit Singh & Enyu Wang & Liansheng Liu & Jinxiang Wu, 2015. "Numerical Simulation Research on the Process of Reburning South American Coal and Cornstalk," Energies, MDPI, vol. 8(9), pages 1-18, September.

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