Solid fuels particles fragmentation during the periodic combustion

• Autorzy: Gajewski, W. , Kijo-Kleczkowska, A.
• Języki publikacji: EN

Abstrakty

EN

The paper present the experimental results, referring to the coal particles combustion in the conditions of fluidized bed. Periodicity of the coal particles combustion process results from the circulating movement of the material in the boiler: the combustion chamber, the cyclone and the downcomer. The combustion process in the combustion chamber of the CFB is determined by three processes: the cyclic coal particles combustion, the thermal fragmentation of coal and the attrition of coal particles. The paper focuses on the determination of the combined effect of both fragmentation and the cyclic coal particles combustion.

Słowa kluczowe

EN

coal; combustion; fragmentation; CFB; fluizidation

• Czasopismo: Archivum Combustionis
• Rocznik: 2006
• Tom: Vol. 26 nr 1-2
• Strony: 63-81
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Gajewski, W.

autor

Kijo-Kleczkowska, A.

• Department of Boilers and Thermodynamics, Technical University of Częstochowa, Armi Krajowej 19 c, 42-200 Częstochowa, Poland,

Bibliografia

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• [2] Tomeczek J., Coal Combustion, Silesian Technical University, no.1667, Gliwice; 1992 (in Polish)
• [3] Basu. P.: „Combustion of Coal in Circulating Fluidized – Bed Boilers: a Review”, Chem Eng Sci, Volume: 54, (1999), pp.5547-5557
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• [5] Dacombe P., Pourkashanian M., Williams A., Yap L., „Combustion–Induced Fragmentation Behavior of Isolated Coal Particles”, Fuel, Volume:78, (1999), pp.1847-1857
• [6] Chirone R., Massimilla L., „The Application of the Weibull Theory to Primary Fragmentation of a Coal During Devolatilization”, Powder Technology, Volume:57, (1989), pp.197-212
• [7] Pis J.J., Fuertes A.B., Artos V., Suarez A., Rubiera F., „Attrition of Coal Ash Particles in a Fluidized Bed”, Powder Technology, Volume:66, (1991), pp.41-46
• [8] Arena U., Cammarota A., Massimilla L., Siciliano L., Basu P., „Carbon Attrition During the Combustion of a Char in a Circulating Fluidized Bed”, Comb Sci and Tech, Volume:73, (1990), pp.383-394
• [9] Ray Y.-Ch., Jiang T.-S., „Particle Attrition Phenomena in a Fluidized Bed”, Powder Technology, Volume:49, (1987), pp.193-206