Scale-up challenges and opportunities for carbon capture by oxy-fuel fluidized beds

Show simple item record Seddighi, Sadegh Clough, Peter T. Anthony, Edward J. Hughes, Robin W. Lu, Ping 2018-10-10T14:28:45Z 2018-10-10T14:28:45Z 2018-10-09
dc.identifier.citation Sadegh Seddighi, Peter T. Clough, Edward J. Anthony, et al., Scale-up challenges and opportunities for carbon capture by oxy-fuel fluidized beds, Applied Energy, Volume 232, 15 December 2018, Pages 527-542 en_UK
dc.identifier.issn 0306-2619
dc.description.abstract Oxy-fuel combustion is a promising technology for carbon capture and storage (CCS) from large point sources. In particular, fluidized bed (FB) boilers represent one of the power generation technologies capable of utilizing the oxy-fuel concept. This paper reviews the published material on the key aspects of oxy-fuel circulating FB, including the boiler heat balance, heat transfer mechanisms, furnace hydrodynamics, and the mechanical and chemical mechanisms of the process. In particular, it demonstrates the challenges of utilizing high inlet O2 concentrations in the oxy-fuel process in fluidized beds. This requires significantly more efficient gas-particle clean-up technology (especially for Cl with perhaps 19% retention and Hg with 2.15 μg/m3 in flue gases), high circulating solids flux and, hence, significant heat extraction outside the furnace (up to 60% of the boiler’s total heat extraction). Scale-up of oxy-fuel CFB technology can partially compensate for the energy penalty from air separation by furnace downsizing when operating at high inlet O2 concentrations. Critically, while there are numerous measurement campaigns and corresponding models from the pilot and, to a lesser extent, industrial scale, the paper endeavors to answer the questions about what information taken from such experimental campaigns is reliable, useful for future design, and for scale-up. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution 4.0 International *
dc.rights.uri *
dc.subject Oxy-fuel combustion en_UK
dc.subject Carbon capture and storage (CCS) en_UK
dc.subject Fluidized beds en_UK
dc.subject Scale up en_UK
dc.subject Boilers en_UK
dc.title Scale-up challenges and opportunities for carbon capture by oxy-fuel fluidized beds en_UK
dc.type Article en_UK

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