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Some effects of baffles on a fluidized system

✍ Scribed by R. H. Overcashier; D. B. Todd; R. B. Olney

Publisher
American Institute of Chemical Engineers
Year
1959
Tongue
English
Weight
875 KB
Volume
5
Category
Article
ISSN
0001-1541

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✦ Synopsis

Abstract

Some characteristics are reported for the fluidization of an air‐microspheroidal catalyst system in a 16‐in.‐diameter bed equipped with baffles. The back‐mixing characteristics and retention‐time distributions of gas and solids, allowable gas and solids velocities, entrainment rate, and bed density are studied as functions of baffle design.

It is shown that the use of baffles narrows the retention‐time spectrum and permits either concurrent or countercurrent flow while not seriously reducing gas or solids throughput or solids holdup.

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Baffle effects on the performance of a catalytic circulating fluidized bed reactor were examined experimentally. The circulating fluidized bed reactor or riser was 102 mm in diameter and 6.32 m in height. Reaction was the catalytic decomposition of ozone using FCCparticles with a mean diameter of 89