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Ignition behavior o...
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Bu, C. S.Southeast University
(författare)
Ignition behavior of single coal particle in a fluidized bed under O-2/CO2 and O-2/N-2 atmospheres: A combination of visual image and particle temperature
- Artikel/kapitelEngelska2014
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Nummerbeteckningar
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LIBRIS-ID:oai:research.chalmers.se:70229251-be26-49cc-9e01-f296514268e4
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https://doi.org/10.1016/j.apenergy.2013.10.040DOI
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https://research.chalmers.se/publication/195119URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
Anmärkningar
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Single coal particle ignition behavior was studied in a two-dimensional (200 mm x 20 mm x 400 mm) fluidized bed under O-2/N-2 and O-2/CO2 atmosphere with O-2 volume concentration in the range of 0-40%, by a combination of visual observation of the volatile flame and measurement of the particle center temperature. A piece of transparent quartz glass was used as the front wall of the fluidized bed to allow visual observation. The investigated fuel particles were spherical sub-bituminous coal particles with diameter in a range of 6-13 mm, which were artificially carved from selected original coal particles. The volatile combustion flame was recorded by a color video camera to analyze its ignition time delay and extinction behavior. The temperature in the particle center was measured by a very thin thermocouple to follow the particle heating process. Results indicate that under O-2/CO2 atmosphere the ignition delay time is much longer than in O-2/N-2 atmosphere. The devolatilization process is controlled by internal and external heat transfer but it is almost unaffected by atmosphere at the same O-2 concentration. The effect of volatile combustion on heating and extinction delay time can be neglected for larger coal particles.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Liu, D. Y.Southeast University
(författare)
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Chen, X. P.Southeast University
(författare)
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Pallarès, David,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)djpt
(författare)
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Gomez-Barea, A.Universidad de Sevilla,University of Seville
(författare)
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Southeast UniversityChalmers tekniska högskola
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Applied Energy: Elsevier BV115, s. 301-3081872-91180306-2619
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