Results 141 to 150 of about 539 (162)
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Local Bed Voidage in Conical Spouted Beds
Industrial & Engineering Chemistry Research, 1998Local bed voidages have been experimentally determined by means of an optical fiber probe in conical spouted beds of different geometry (angle, inlet diameter) and working under different operating conditions (particle diameter, stagnant bed height, and air velocity).
María J. San José +3 more
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Determination of Minimum Spouting Velocities in Conical Spouted Beds
The Canadian Journal of Chemical Engineering, 2004AbstractMinimum spouting velocities in conical spouted beds have been obtained from pressure drops versus the superficial gas velocity curves, based on both increasing and decreasing the superficial gas velocity. It has been shown that the minimum spouting velocity from decreasing the superficial gas velocity is lower than from increasing the ...
Zhiguo Wang +3 more
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Interactions of spout jets in a multiple‐spouted bed
The Canadian Journal of Chemical Engineering, 2013A three‐dimensional (3D) computational fluid dynamics (CFD) model, coupling with two‐fluid model (TFM) approach is adopted to investigate the interactions of spout jets and to evaluate the effects of baffles in a multiple‐spouted bed. For two typical flow patterns, that is single spouting and double‐spouting, characteristics of flow patterns, solid ...
Dailin Chen +4 more
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Numerical and experimental study on spout elevation in spout‐fluidized beds
AIChE Journal, 2011AbstractThe effect of elevating the spout on the dynamics of a spout‐fluidized bed, both numerically and experimentally is studied. The experiments were conducted in a pseudo‐two‐dimensional (2‐D) and a cylindrical three dimensional (3‐D) spout‐fluidized bed, where positron emission particle tracking (PEPT) and particle image velocimetry (PIV) were ...
Buijtenen, van, M.S. +5 more
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Fountain confined conical spouted beds
Powder Technology, 2017Abstract Particle entrainment is a serious problem in spouted bed contactors when operation is carried out using beds made up of ultrafine particles, irregular ones and fine and coarse particle mixtures. Accordingly, the conventional conical spouted bed has been modified by inserting a fountain confiner in the contactor, and a study has been carried ...
Haritz Altzibar +6 more
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Coal combustion in spouted and spout-fluid beds
1986This study of coal combustion was carried out in a half-column spout-fluid bed combustor, in which Forestberg coal, a sub-bituminous Alberta coal, was burned in inert beds of sand. The combustor consists of a half cylindrical stainless steel column of 0.152 m I. D.
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Hydrodynamic studies of spouted and spout-fluid beds
2009Hydrodynamic experiments were conducted in a three-dimensional spout-fluid bed with a specially designed conical distributor to supply the auxiliary air. The vessel used was a cylindrical column, 0.15 m in diameter and 1.05 m high fitted with an inlet orifice plate with a diameter of 19.1 mm.
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Low temperature drying of pomace in spout and spout-fluid beds
Journal of Food Engineering, 2007The solid residue that originates from virgin olive oil production has a consistency that falls between a paste and a particulate solid, consists of two phases: the crushed olive kernel and the fruit pulp. The kernel particles can be used as high quality solid fuel, while oil can be extracted from the pulp residue.
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Spouted bed and spout-fluid bed hydrodynamics in a 0.91 m diameter vessel
2010Experiments were conducted in a 0.91 m diameter half-cylindrical spouted bed/spout-fiuid bed column equipped with a 60° conical base and semi-circular inlet orifice diameters of 76 to 140 mm. Three particulate solid materials were studied: 3.25 mm polystyrene, 4.72 mm brown beans and 6.71 mm green peas.
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Pressure drop in spouted beds.
2009The present work contains the result of an investigation on pressure drop in sprouted beds. Six inch columns with a 0.5" air inlet orifice were used during the course of the investigation. The spouting medium was air. The gas flow rates vary from 84 to 1077 pounds per hour per square foot of column cross section.
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