Abstract
The dynamics of pressure fluctuation signals caught in the riser of a small circulating fluidized bed (CFB) system was assessed through the absolute mean deviation (AMD) analysis to verify the simultaneous effect of the solids inventory and the fluidization velocity on the gas-solid hydrodynamics. The signals originated from the multiphase stream were read at frequency of 400 Hz by pressure transducers placed at three heights along the riser column and then compared. Results indicated that the AMD analysis can be used as an effective tool to find out differences in the patterns of the local gas-solid flow hydrodynamics promoted by variations of both the superficial gas velocity and the solids inventory, mainly in the presence of high axial gradients of the bed density.
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Authors thank to the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) for the financial support.
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Schaffka, F.T.S., Behainne, J.J.R., Parise, M.R., De Castilho, G.J. (2021). Dynamics of the Pressure Fluctuation in the Riser of a Small Scale Circulating Fluidized Bed: Effect of the Solids Inventory and Fluidization Velocity Under the Absolute Mean Deviation Analysis. In: Balthazar, J.M. (eds) Vibration Engineering and Technology of Machinery. Mechanisms and Machine Science, vol 95. Springer, Cham. https://doi.org/10.1007/978-3-030-60694-7_27
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DOI: https://doi.org/10.1007/978-3-030-60694-7_27
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