RADIAL PARTICLE FLUX AND MOMENTUM TRANSFER IN THE CIRCULATING FLUIDIZED BED
作者:
CHUNMING QI,
IHABH. FARAG,
期刊:
Chemical Engineering Communications
(Taylor Available online 1993)
卷期:
Volume 124,
issue 1
页码: 15-27
ISSN:0098-6445
年代: 1993
DOI:10.1080/00986449308936174
出版商: Taylor & Francis Group
关键词: Circulating fluidized bed;Radial particle concentration distribution;Particle momentum;Radial particle flux.
数据来源: Taylor
摘要:
The solid particle concentration distribution in the riser of a Circulating Fluidized Bed (CFB) is dilute at the center and dense near the wall because of the axial particle momentum exchange. In our study, the radial particle concentration distribution was investigated theoretically and experimentally. To assess the radial particle motion, a special flux probe was designed. We found that near the wall, the radial particle flux was much higher then the net axial particle flux, and that the measured radial profile of particle flux was similar to that of the particle concentration. The resulting radial flux is very valuable in developing a model of heat transfer between the gas-particle suspensions and the wall surface.
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