Sökning: onr:"swepub:oai:research.chalmers.se:70229251-be26-49cc-9e01-f296514268e4" >
Ignition behavior o...
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
-
- Bu, C. S. (författare)
- Southeast University
-
- Liu, D. Y. (författare)
- Southeast University
-
- Chen, X. P. (författare)
- Southeast University
-
visa fler...
-
- Pallarès, David, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Gomez-Barea, A. (författare)
- Universidad de Sevilla,University of Seville
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- Engelska.
-
Ingår i: Applied Energy. - : Elsevier BV. - 1872-9118 .- 0306-2619. ; 115, s. 301-308
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://idus.us.es/b...
-
https://doi.org/10.1...
-
https://research.cha...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- CAPTURE
- OXY-FUEL COMBUSTION
- PULVERIZED COAL
- DIFFERENT RANKS
- Ignition
- Oxyfuel
- PYROLYSIS
- Devolatilization
- CO2
- Fluidized bed
- GASIFICATION
- O-2/CO2 atmosphere
- ELECTRICITY
- CHAR PARTICLES
- HYDROGEN-PRODUCTION SYSTEMS
- DEVOLATILIZATION
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas