Abstract
The influence of flow rate, temperature, gas distributor type, number of stages, type and spacing of the compartment separating plates and bed height to diameter ( H/D) ratio on the mean gas residence time was investigated for a slightly adsorbing (Ar) and strongly adsorbing (Co 2) gas in bench-scale fluidized beds with porous particles. With Ar, only the flow rate and H/D ratio influence τ. With Co 2 the temperature, the gas distributor type, the number of stages and the type of the compartment separating plates also influence τ. With increasing temperature the effect of the number of stages on τ becomes less and/or disappears. The behaviour is explained by means of a simple model of the fluidized bed.
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