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Minimum fluidization velocity at high temperatures
Industrial & Engineering Chemistry Research, 1987Les recentes controverses sur la variation de la porosite du lit a fluidisation minimale a hautes temperatures, sont expliquees et reconciliees sur la base du schema de classification des poudres de Saxena et Ganzha et du champ d'ecoulement du fluide autour des particules correspondant, produisant les forces entre les particules mises en lumiere par ...
S. C. Saxena, A. Mathur
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Minimum fluidizing velocities for coal in air
The Canadian Journal of Chemical Engineering, 1958AbstractThis paper reviews the methods which have been proposed for evaluating the lower limit of velocity for which a fluidized bed of solids will be stable. Experimental tests for determining the minimum fluidizing velocity have been obtained for nine narrowly sized coal samples ranging from 0.0099 to 0.224 in.
C. G. Sinclair, D. B. Robinson
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Minimum fluidization velocity at elevated temperature in tapered fluidized bed
Chemical Engineering and Processing: Process Intensification, 2008Very little data of minimum fluidization velocity at elevated temperatures of tapered bed are available in the literature. This study was undertaken to provide some data under elevated temperature conditions in tapered bed. Data on minimum fluidization velocity have been obtained experimentally for temperature up to 800 °C in case of 0.5 mm diameter of
D.C. Sau, Swati Mohanty, K.C. Biswal
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Minimum fluidization velocities of fluidized-bed coal-combustion solids
Powder Technology, 1991Abstract The minimum fluidization velocities of coal, char, limestone, lime and partially sulphated lime under typical AFBC conditions and at room temperature have been determined experimentally. On fitting the experimental data to a Wen and Yu type equation, the two fitted parameters are found to be highly sensitive to the fitting method used to ...
J. Adánez, J.C. Abanades
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Chemie Ingenieur Technik, 2021
AbstractMultiphase particle in a cell simulation of fluidized beds for different Geldart group particles (A, B and D) were investigated. The minimum fluidization velocities predicted by the Barracuda Virtual Reactor® were compared and contrasted by theoretical predictions with the Wen‐Yu model.
Kanjakha Pal, Jörg Theuerkauf
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AbstractMultiphase particle in a cell simulation of fluidized beds for different Geldart group particles (A, B and D) were investigated. The minimum fluidization velocities predicted by the Barracuda Virtual Reactor® were compared and contrasted by theoretical predictions with the Wen‐Yu model.
Kanjakha Pal, Jörg Theuerkauf
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Minimum fluidization velocities in beds of mixed solids
The Canadian Journal of Chemical Engineering, 1978AbstractThe fluidization behaviour of a bed of solids of mixed sizes and/or densities indicates that for a range of velocities between ubf (the velocity of beginning of fluidization) and utf (the velocity of complete fluidization), such a bed is only partially fluidized.
R.P. Vaid, P. Sen Gupta
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Improved equation for the calculation of minimum fluidization velocity
Industrial & Engineering Chemistry Process Design and Development, 1986Classement des particules solides en trois categories selon leur forme, et determination pour chaque categorie des valeurs optimales des constantes figurant dans les equations de calcul de la vitesse minimale.
Antoni Lucas +3 more
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Minimum fluidization velocities of wet coal particles
Industrial & Engineering Chemistry Research, 1988Minimum fluidization velocities of wet lignite coal beds were measured. The experiments were carried out in an 8.5 x 10/sup -2/ m i.d. column with particles of average size ranging from 0.15 x 10/sup -3/ to 4.25 x 10/sup -3/m, using air as a fluidizing gas. The experimental results were compared to the values predicted by commonly used correlations. On
Jaroslav Pata +3 more
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Minimum fluidization velocities of mixtures of biomass and sands
Energy, 2001Abstract The present work reports studies on the fluidization of mixtures of biomass and sands. The biomass materials used are rice husk, sawdust and groundnut shell powder, and the sands employed are of two different densities and particle sizes.
T R. Rao, J.V Ram. Bheemarasetti
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Effect of operating temperature on minimum fluidization velocity
Powder Technology, 1991We present experimental and literature data on the minimum fluidization velocity for operation at temperatures above ambient values. By regression analysis on the combined and transformed data, a new empirical correlation was developed. We investigate the effect of temperature on the minimum fluidization velocity of beds of different materials, such as
S.Y. Wu, J. Baeyens
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