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Energies 2012, 5(9), 3167-3177;

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

National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
Authors to whom correspondence should be addressed.
Received: 12 June 2012 / Revised: 24 July 2012 / Accepted: 3 August 2012 / Published: 24 August 2012
(This article belongs to the Special Issue Biomass and Biofuels 2012)
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N2O emissions from coal fired fluidized-bed combustion are approximately 30–360 mg/Nm3, much higher than that from pulverized coal combustion (less than 30 mg/Nm3). One approach to reduce the N2O 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 N2O removal could reach as high as 99% when the heat ratio of biomass gas to coal is 10.5%. View Full-Text
Keywords: integrated system; simulation; CFB; biomass reburning integrated system; simulation; CFB; biomass reburning

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Hu, X.; Wang, T.; Dong, Z.; Zhang, H.; Dong, C. Research on the Gas Reburning in a Circulating Fluidized Bed (CFB) System Integrated with Biomass Gasification. Energies 2012, 5, 3167-3177.

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