Distributor-zone reaction in a gas-fluidized bed

Journal Article · Sun Jan 01 04:00:00 EST 1984 · AIChE Symp. Ser.; (United States)

OSTI ID:6339083

Xiao-tian, Y; Horne, D G; Rowe, P N; Yates, J G

Experiments are described in which the visible gas flow into a fluidized bed from various orifice distributors was measured using X-rays. Gas flowrates were in the range 6 - 20 Q /SUB mf/ . From the wide discrepancy between this visible flow at the distributor and the metered flow into the bed it was inferred that a large proportion of the gas had initially penetrated the dense phase, a process that, in the case of a reacting system, is expected to lead to enhanced conversions in the region near the orifice, the ''distributor zone''. Chemical tests were carried out using a fluidized-bed reactor fitted with the same distributors and enhanced reaction rates in the distributor zone were observed. A simple model is proposed which accounts well for the chemical results in terms of the X-ray observations.

• Research Organization: Dept. of Chemical and Biochemical Engineering University College London, Torrington Place, London
• OSTI ID: 6339083
• Journal Information: AIChE Symp. Ser.; (United States), Journal Name: AIChE Symp. Ser.; (United States) Vol. 80:241; ISSN ACSSC
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CHEMICAL REACTIONS
CHEMICAL REACTORS
FLOW MODELS
FLOW RATE
FLUID FLOW
FLUIDIZED BEDS
GAS FLOW
MATHEMATICAL MODELS