A simplified methodolgy for scaling hydrodynamic data from Lagisza 460 MWC supercritical CFB boiler

• Autorzy: Mirek P.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of model studies on the hydrodynamics of the world's first supercritical circulating fluidized bed boiler Lagisza 460 MWe, carried out on a scale model built in a scale of 1/20 while preserving the full geometrical similarity. To reflect the macroscopic pattern of flow in the boiler's combustion chamber, tests were carried out based on two dimensionless flow dynamic similarity criteria, while maintaining a constant Froude number value between the commercial and the scaled-down units. A mix of polydispersion solids with its fractional composition determined by scaling down the particle size distribution of the boiler's inert material was utilised for the tests using a special scaling function. The obtained results show very good agreement with the results of measurements taken on the Lagisza 460 MWe supercritical CFB boiler.

Słowa kluczowe

EN

hydrodynamics; circulating fluidized bed; scaling

PL

hydrodynamika; skalowanie; złoże fluidalne

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2011
• Tom: Vol. 32, nr 4
• Strony: 245--253
• Opis fizyczny: Bibliogr. 8 poz., tab., rys.

Twórcy

autor

Mirek P.

• Częstochowa University of Technology, Faculty of Environmental Protection and Engineering, Institute of Advanced Energy Technologies, ul. Dąbrowskiego 69, 42-200 Czestochowa, Poland

Bibliografia

• 1. Glicksman L. R., Hyre M., Woloshun K., 1993. Simplified scaling relationships for fluidized beds, Powder Technol.,11, 177-199. DOI: 10.1016/0032-5910(93)80055-F.
• 2. Glicksman L.R., 2003. Fluidized bed scaleup, In: Yang W.-C. (Ed.), Handbook of Fluidization and Fluid-Particle Systems. Marcel Dekker, New York, 343-378.
• 3. Horio M., 1997. Hydrodynamics, In: Grace J.R., Avidan A.A., Knowlton T.M. (Eds.), Circulating Fluidized Beds. Blackie Academic and Professional, London, 21-85.
• 4. Horio M., Ishii H., Kobukai Y., Yamanishi N., 1989. A scaling law for circulating fluidized beds, J. Chem. Eng. Japan, 22(6), 587-592.
• 5. Knowlton T.M., Karri S.B.R., Issangya A., 2005. Scale-up of fluidized-bed hydrodynamics, Powder Technol, 150,72-77. DOI: 10.1016/j.powtec.2004.11.036.
• 6. Kolar A.K., Leckner B., 2006. Scaling of CFB boiler hydrodynamics. Advances in Energy Research, 4-5 December 2006, IIT Bombay, Mumbay, McMillan India Ltd, 34-40.
• 7. Kunii D., Levenspiel O., 1991. Fluidization Engineering, 2nd Ed, Butterworth-Heinemann, USA.
• 8. van der Meer E.H., Thorpe R.B., Davidson J.F., 1999. Dimensionless groups for practicable similarity of circulating fluidized beds, Chem. Eng. ScL, 54, 5369-5376. DOI: 10.1016/S0009-2509(99)00270-5.