Results 171 to 180 of about 2,047 (224)
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Spout deflection in spouted beds and countermeasures: A review
Powder Technology, 2021Abstract Spouted beds operation quality and stability often suffer from spout deflection, which means the spout channel shows a lateral movement instead of vertical spouting. A comprehensive review about spout deflection in spouted beds has not been reported yet.
Yuanhe Yue, Shuai Wang, Yansong Shen
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Spout Geometry in Shallow Spouted Beds
Industrial & Engineering Chemistry Research, 2000The effect of the operating conditions (base angle, gas inlet diameter, stagnant bed height, particle diameter, and gas velocity) on spout geometry has been studied in shallow spouted beds by means of an optical fiber probe. The experimental results have been fitted to an empirical equation for calculation of the average spout diameter in shallow ...
María J. San José +4 more
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Experimental investigation of spout incoherence in a spouted bed
Chemical Engineering Journal, 2021Abstract Spout incoherence is a typical instability phenomenon in spouted beds, in which the particles in the spout region move upward as groups, leading to poor spouting stability and efficiency. In this paper, the moving particle blockage in the spout region is measured to quantify the spout incoherence for the first time, by means of depicting the
Yuanhe Yue +4 more
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Design factors of conical spouted beds and jet spouted beds
Industrial & Engineering Chemistry Research, 1993Original aspects in the design of conical contactors used in spouting and jet spouting regimes have been studied. The experimental results correspond to different solids: glass spheres in the 0.001-0.008-m particle diameter range, polystyrene, vegetable seeds, gravel, and Teflon, which have been used in contactors with different geometries (several ...
Martin Olazar +4 more
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Minimum spouting velocity of conical spouted beds
The Canadian Journal of Chemical Engineering, 1997AbstractExisting correlations for predicting minimum spouting velocity in conical spouted beds have been found to give poor agreement with available literature data. A new correlation has been developed based on literature data to give much better prediction of the minimum spouting velocity for both small and pilot‐scale conical‐spouted beds.
H. T. Bi +3 more
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Spout diameters in full and half spouted beds
The Canadian Journal of Chemical Engineering, 1998AbstractA fiber optic probe has been used to measure spout diameters in a half‐column and a full‐column based on the significantly higher counts of output electric pulses in the spout region than in the annulus. The flat wall of a semi‐cylindrical spouted bed column was found to cause considerable distortion of spout shapes which became approximately ...
Ayn‐Long He +3 more
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Prediction of minimum spouting velocity in spouted bed
Asia-Pacific Journal of Chemical Engineering, 2009AbstractMinimum spouting velocity was measured using different bed heights with six different particles. A statistical analysis of the reported correlations for minimum spouting velocity based on the present and literature data was made and the estimated.
Sivakumar Venkatachalam +2 more
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2006
The applicability of the spouted bed technique to drying of granular products that are too coarse to be readily fluidized was recognized in the early 1950s. The classic or conventional spouted bed is a cylindrical vessel with a conical bottom fitted with an inlet nozzle for introduction of the spouting air.
Elizabeth Pallai +2 more
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The applicability of the spouted bed technique to drying of granular products that are too coarse to be readily fluidized was recognized in the early 1950s. The classic or conventional spouted bed is a cylindrical vessel with a conical bottom fitted with an inlet nozzle for introduction of the spouting air.
Elizabeth Pallai +2 more
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Combustion and Flame, 1978
Abstract The use of spouted beds for burning poor fuels is explored both experimentally and theoretically, following previous work on burners with massive enthalpy recirculation. The spout passes through the combustion zone and becomes part of a toroidal vortex of the bed material which acts as an effective mobile heat exchanger between hot products ...
M. Khoshnoodi, F.J. Weinberg
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Abstract The use of spouted beds for burning poor fuels is explored both experimentally and theoretically, following previous work on burners with massive enthalpy recirculation. The spout passes through the combustion zone and becomes part of a toroidal vortex of the bed material which acts as an effective mobile heat exchanger between hot products ...
M. Khoshnoodi, F.J. Weinberg
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Minimum spouting velocity in multiple spouted beds
The Canadian Journal of Chemical Engineering, 1994AbstractStudies have been carried out in multiple spouted beds having 2, 3 and 4 spout cells; different fluid inlet orifices and different solids have been used with air and water as spouting fluids. The minimum spouting velocities are measured for different bed depths.
D. V. R. Murthy, P. N. Singh
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