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Various models were tested to characterize the non-ideal solids flow patterns within the fluid bed.
Solids flow patterns were observed and measured in the square cross-section riser of a laboratory circulating fluidised bed (CFB).
Radioactive gas and solids tracer experiments have been performed to study the gas and solids flow patterns in the reactor.
In this study, an in-house finite element (FE) program was modified to predict the particulate solids flow patterns during discharges from silos, and the effect of a double-cone insert on such flow patterns.
Similar(56)
Analysis of the resulting three-dimensional trajectories provides information on solids flow pattern and solids velocity.
An experimental investigation of the solids flow pattern in gas flowing solids fixed bed contactors is presented.
The non-invasive positron emission particle tracking (PEPT) technique was used to observe and quantify particle trajectory, solids flow pattern, solids velocity, and solids circulation frequency.
Although fluid flow rates were held constant during tracer experiments, there seemed to be an evolution of solids flow pattern within the reactor as evidenced by the time-dependency of the intensity function, λ.
The present research uses positron emission particle tracking (PEPT) in a riser of B-type bed material to determine the different operating modes by measuring (i) particle velocities and residence time distribution, (ii) population densities of these particles in the cross-sectional area of the riser, and (iii) solids flow pattern at the bottom of the riser.
In this work, a single radioactive particle in the CFB loop is tracked during its multiple visits to the riser and, by invoking ergodicity, solids circulation rate, accurate solids RTD and additional information on the solids flow pattern in the riser are estimated.
Then the model is verified in terms of solid flow patterns.
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