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- W1974256287 abstract "The formation of suspension beds on a dual flow distributor was studied using mono-sized particles (group D, Geldart, 1973). Three stages are experienced during the formation of a suspension bed: the induced, the growing and the final stage. The discharge mechanisms are raining, weeping, dumping (I) and dumping (II). The operating variables of a suspension bed are the opening ratio of the distributor (m), the solids feeding rate (F), the normalised air velocity through the hole (Uo/Ut, where Ut is the terminal velocity of a single sphere in the air), the ratio of the diameter of the hole of the perforated plate to the size of the particle (do/dp), and the density of the particles (ρp). Their influences on the formation of a suspension bed were examined. Five different types of beds were formed depending on the combination of the operating variables; these can be catagorised as dilute beds, oscillating shallow beds, bubbling beds, slugging beds and flooding beds. The ranges for stable operating conditions using 2-mm polystyrene spheres are mapped, which have the following ranges: 0.31≤m≤0.52; 0.082 kg/s·m2≤F≤0.455 kg/s·m2 and 0.8≤Uo/Ut≤1.25. A model was developed to simulate the growth of the bed in terms of the net pressure drop across the bed. There is a good qualitative agreement between the experimental pressure drop and model predictions." @default.
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- W1974256287 date "2003-04-01" @default.
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- W1974256287 title "The formation of a suspension bed on dual flow distributors" @default.
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- W1974256287 doi "https://doi.org/10.1016/s0032-5910(02)00347-9" @default.
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