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- W2370036173 abstract "For studying the vibration in FCCU standpipe because of particle flow,an experiment was carried out on the pressure dynamic behavior of down-flow of FCC catalysts in a standpipe with diameter of 150 mm and height of 9000 mm.Time series of pressure fluctuations were recorded at different axial measurement points in a standpipe at solids mass fluxes of 50 kg/(m2·s) and 395 kg/(m2·s).With the coherence between measurement points,the pressure fluctuation forming and transferring were demonstrated.The results indicated that the catalyst particle down-flow in the standpipe is of pressure fluctuation characteristics.When two flow regimes were coexisting in the standpipe,the pressure fluctuations in the upper dilute-phase part originated from the inlet and transferred downward,and in the bottom dense-phase part from the outlet and transferred upward.When there was the dense-phase conveying regime in the standpipe,the pressure fluctuations originated from the inlet and developed during FCC catalysts flowing downward.The pressure fluctuation with the frequency of lower than 0.3 Hz was the cause of the standpipe vibration." @default.
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- W2370036173 date "2012-01-01" @default.
- W2370036173 modified "2023-09-23" @default.
- W2370036173 title "Analysis of Pressure Fluctuations of Catalyst Powder Flowing in the Standpipe of FCCU" @default.
- W2370036173 hasPublicationYear "2012" @default.
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