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- W2066777745 abstract "A study of the minimum fluidization velocity of the large particles (3–6 mm) in a three-phase external-loop air-lift reactor is reported. The results show that the minimum fluidization velocity depends on particle diameter, solids loading and the properties of the liquid phase. The addition of small quantities of n-butanol or polyethylene oxide (a drag-reducing agent) markedly reduced the minimum fluidization velocity. Hysteresis behaviour in a 0.5% butanol solution was observed, i.e. two fluidization velocities were determined: the higher one to reach fluidization and the lower one to maintain it. An essentially different behaviour of 3- and 6-mm particles in water and an aqueous solution of polyethylene oxide was noticed. The fluidization velocity in the 3-mm bed was larger than in the 6-mm bed. This phenomenon, being opposite to existing two- and three-phase investigations, was considered as a consequence of the hydrodynamics of the investigated type of reactor. A simple model is used to predict the gas holdup in the riser required for fluidization. A good agreement between the predicted and experimental data was obtained." @default.
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- W2066777745 date "1988-01-01" @default.
- W2066777745 modified "2023-09-24" @default.
- W2066777745 title "An experimental study of the minimum fluidization velocity in a three-phase external-loop air-lift reactor" @default.
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- W2066777745 doi "https://doi.org/10.1016/0009-2509(88)85076-0" @default.
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