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Numerical simulation of radiation intensity of oxy-coal combustion with flue gas recirculation
Royal Institute of Technology.
Mälardalen University, School of Business, Society and Engineering.ORCID iD: 0000-0003-0300-0762
2013 (English)In: International Journal of Greenhouse Gas Control, ISSN 1750-5836, E-ISSN 1878-0148, Vol. 17, p. 473-480Article in journal (Refereed) Published
Abstract [en]

Oxy-fuel combustion is one of potential technologies for carbon dioxide (CO2) capture in fossil fuel fired power plants. Characterization of flue gas composition in the oxy-fuel combustion differs from that of conventional air-coal combustion, which results in the change of radiative heat transfer in combustion processes. This paper presents a numerical study of radiation intensity on lateral walls based on the experimental results of a 0.5MW combustion test facility (CTF). Differences in the oxy-coal combustion are analyzed, such as flue gas recycle, absorption coefficient and radiation intensity. The simulation results show that an effective O2 concentration ([O2]effective) between 29 and 33vol% (equivalent to the flue gas recycle ratio of 72-69%) constitutes a reasonable range, within this range the behavior of oxy-coal combustion is similar to air-coal combustion. Compared with the air-coal combustion, the lower limit (29vol%) of this range results in a similar radiative heat flux at the region closed to the burner, but a lower radiative heat flux in the downstream region of the CTF; the upper limit (33vol%) of this range results in a higher radiative heat flux at the region closed to the burner, while a similar radiative heat flux in the downstream region of the CTF

Place, publisher, year, edition, pages
2013. Vol. 17, p. 473-480
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-20919DOI: 10.1016/j.ijggc.2013.05.002ISI: 000324153700043Scopus ID: 2-s2.0-84880693104OAI: oai:DiVA.org:mdh-20919DiVA, id: diva2:641235
Note

Source: Scopus

Available from: 2013-08-16 Created: 2013-08-16 Last updated: 2017-12-06Bibliographically approved

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Yan, Jinyue

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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