Residence-time distribution studies in fluidized-bed bioreactors

Technical Report · Sun Mar 01 00:00:00 EST 1981

OSTI ID:6612856

Roadcap, S J; Trevino-Lozano, R A; Znaimer, S

Residence-time distributions of two fluidized-bed bioreactors (0.1-m and 0.51-m diam) were studied under conditions of two- and three-phase flow. Fluidization velocity, solid loading of the bed, and reactor diameter were varied. The effluent response to inlet pulses of tracer dye was reproducibly measured. A dispersion model with a single adjustable parameter, the dispersion number (Pe/sup -1/), accurately describes broadening of the input pulse as it flows through the system. Furthermore, an empirical correlation was developed relating the dispersion number with void fraction and a modified Reynolds number.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6612856
• Report Number(s): ORNL/MIT-319
• Country of Publication: United States
• Language: English

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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
59 BASIC BIOLOGICAL SCIENCES
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01 COAL, LIGNITE, AND PEAT
CHEMICAL REACTORS
FLUIDIZED BED
FLUIDIZATION
MATHEMATICAL MODELS
GAS FLOW
TWO-PHASE FLOW
BIOMASS
COAL FINES
DISTRIBUTION
FICK LAWS
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MEASURING METHODS
TRACER TECHNIQUES
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ISOTOPE APPLICATIONS
MATERIALS HANDLING
RENEWABLE ENERGY SOURCES
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550700 - Microbiology
052001 - Nuclear Fuels- Waste Processing
400201 - Chemical & Physicochemical Properties
010500 - Coal
Lignite
& Peat- Products & By-Products