In many industrial applications of gas-solids fluidized beds, it is worthwhile to have an on-line monitoring method for detecting changes in the hydrodynamics of the bed (due for example to agglomeration) quickly. In this paper, such a method, based on the short-term predictability of fluidized bed pressure fluctuations, is examined. Its sensitivity is shown by experiments with small step changes in the superficial gas velocity and by experiments with a gradual change in the particle size distribution of the solids in the bed. Furthermore, it is demonstrated that the method is well able to indicate if a stationary hydrodynamic state has been reached after a change in the particle size distribution (a ‘grade change’).
Monitoring Fluidization Dynamics for Detection of Changes in Fluidized Bed Composition and Operating Conditions
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van Ommen, J. R., Schouten, J. C., and van den Bleek, C. M. (December 1, 1999). "Monitoring Fluidization Dynamics for Detection of Changes in Fluidized Bed Composition and Operating Conditions." ASME. J. Fluids Eng. December 1999; 121(4): 887–894. https://doi.org/10.1115/1.2823551
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