Fluid Mechanics of Pressurized Circulating Fluidized Beds
Wirth KE (1992)
Publication Language: English
Publication Type: Conference contribution
Publication year: 1992
Pages Range: -
Conference Proceedings Title: Preprints 7th Internat. Conference on Fluidization
Event location: Brisbane, Australien
ISBN: 0939204479
Abstract
A fluid mechanical model of segregated vertical gas-solids flow has been developed. Mass and force balances were set up with the aid of this model and, finally, a dimensionless state and pressure drop diagram was calculated. In this diagram, the pressure gradient causedby the solids transport is plotted in dimensionless form versus the superficial gas velocity in the form of a par- ticle Froude number. Parameter is the ratio of the solids volumetric flow rate at minimum fluidization tothe gas volumetric flow rate. The state and pressure drop diagram is valid for a given gas-solids system, i.e. for a given Archimed es number and given inimum fluidizationporosity. The fluid mechanical behaviour of different types of circulating fluidized beds can be explained with the aid of the state and pressure drop diagram for segregated vertical gas-solids flow. As an example, the operating behaviourof circulating fluidized bed with a syphon in the solids downcomer is discussed. Measurements of the circulating solids mass flow rates arecom- pared with calculation results
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How to cite
APA:
Wirth, K.-E. (1992). Fluid Mechanics of Pressurized Circulating Fluidized Beds. In Owen Potter (Eds.), Preprints 7th Internat. Conference on Fluidization (pp. -). Brisbane, Australien, AU.
MLA:
Wirth, Karl-Ernst. "Fluid Mechanics of Pressurized Circulating Fluidized Beds." Proceedings of the 7th Internat. Conference on Fluidization, Brisbane, Australien Ed. Owen Potter, 1992. -.
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