Solids flow pattern in the bottom zone of a rectangular cross-section CFB was investigated by using hot particles as the tracer. The experiments were carried out in a cold model circulating fluidized bed. The riser has an inner cross-section of 0.3 m by 0.5 m and a height of 5.8 m. The solids were returned into the riser at a height of 0.75 m above the air distributor within an angle of about 40 degree. Quartz sand was used as the bed material. The hot particles were also quartz sand but with a little smaller size. Specially designed miniature electrically heating devices were installed flush with the inner bed wall or inside the bed. At each run, about 10–15 cm3 hot particles were slowly pulled into the bed. The temperature response around the device was measured with four copper-constantan thermocouples. Based on the experimental results, a 3-D core-annulus model describing the solids flow pattern in the bottom zone of the CFB riser is proposed.
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17th International Conference on Fluidized Bed Combustion
May 18–21, 2003
Jacksonville, Florida, USA
Conference Sponsors:
- Advanced Energy Systems
ISBN:
0-7918-3680-0
PROCEEDINGS PAPER
Solids Flow Pattern in the Bottom Zone of a Rectangular Cross-Section Circulating Fluidized Bed
Hong-Shun Li,
Hong-Shun Li
Huazhong University of Science and Technology, Wuhan, P.R. China
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Yi-Jun Wang,
Yi-Jun Wang
Huazhong University of Science and Technology, Wuhan, P.R. China
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Shi-Ping Jin
Shi-Ping Jin
Huazhong University of Science and Technology, Wuhan, P.R. China
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Hong-Shun Li
Huazhong University of Science and Technology, Wuhan, P.R. China
Yi-Jun Wang
Huazhong University of Science and Technology, Wuhan, P.R. China
Shi-Ping Jin
Huazhong University of Science and Technology, Wuhan, P.R. China
Paper No:
FBC2003-043, pp. 279-285; 7 pages
Published Online:
December 22, 2008
Citation
Li, H, Wang, Y, & Jin, S. "Solids Flow Pattern in the Bottom Zone of a Rectangular Cross-Section Circulating Fluidized Bed." Proceedings of the 17th International Conference on Fluidized Bed Combustion. 17th International Conference on Fluidized Bed Combustion. Jacksonville, Florida, USA. May 18–21, 2003. pp. 279-285. ASME. https://doi.org/10.1115/FBC2003-043
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