Distributor effects in liquid fluidized beds of low-density particles

The effect of flow nonuniformities existing near the distributor of a liquid fluidized bed containing very low‐density particles (ρs = 1.05 g/mL) has been investigated experimentally. Immobilized enzyme or cell bioreactors operated as liquid fluidized beds often employ low‐density particles as the s...

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Bibliographic Details
Published in:AIChE journal 1991-12, Vol.37 (12), p.1825-1832
Main Authors: Asif, Mohammad, Kalogerakis, Nicolas, Behie, Leo A.
Format: Article
Language:English
Subjects:
09 BIOMASS FUELS
090900 - Biomass Fuels- Processing- (1990-)
420400 - Engineering- Heat Transfer & Fluid Flow
Applied sciences
BIOREACTORS
CATALYSTS
Chemical engineering
DATA
DENSITY
DESIGN
ENGINEERING
Exact sciences and technology
EXPERIMENTAL DATA
FLOW MODELS
FLUID FLOW
Fluidization
FLUIDIZED BEDS
FLUIDS
IMMOBILIZED ENZYMES
INFORMATION
LIQUIDS
MATHEMATICAL MODELS
NUMERICAL DATA
PARTICLES
PERFORMANCE TESTING
PHYSICAL PROPERTIES
TESTING
UNSTEADY FLOW
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Summary:The effect of flow nonuniformities existing near the distributor of a liquid fluidized bed containing very low‐density particles (ρs = 1.05 g/mL) has been investigated experimentally. Immobilized enzyme or cell bioreactors operated as liquid fluidized beds often employ low‐density particles as the support matrix containing the immobilized biocatalyst. With poorly designed multihole distributors, dead zones can be created which seriously undermine the performance of the bioreactor due to the lack of nutrients. Design guidelines are provided for distributors to minimize the inlet flow disturbances, and hence eliminate potential distributor region problems. As a result, the dispersion model, which is normally used for design purposes, can then be applied.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.690371207