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Gas mixing in the cocurrent downflow circulating fluidised bed

โœ Scribed by Assoc. Prof. Fei Wei; Prof. Yong Jin; Prof. Zhiqing Yu; Dr. Jinzhong Liu

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
321 KB
Volume
18
Category
Article
ISSN
0930-7516

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โœฆ Synopsis

An experimental study on the gas dispersion behaviour of a cocurrent downflow gas-solids suspension in a 140 mm i.d. circulating fluidised bed (CDCFB) using the steady-state tracer method is presented. The influence of gas velocity, solids circulating rate and particle density on radial gas dispersion has been examined. Gas dispersion can well be described by an eddy diffusion mechanism and a proposed two dimensional dispersed plug-flow model can fit the experimental data very well. Correlations of the radial diffusion coefficient were obtained. It is found that the axial diffusion coefficient obtained in the CDCFB is much lower than that in conventional circulating fluidised beds.

๐Ÿ“œ SIMILAR VOLUMES

Heat transfer in a packed bed reactor wi
Heat transfer in a packed bed reactor with cocurrent downflow of a gas and a liquid
โœ A.S. Lamine; L. Gerth; H. Le Gall; G. Wild ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 857 KB

The authors investigate hydrodynamics and radial heat transfer in packed column with cocurrent downflow of gas and liquid. The effect of flow regimes, of gas and liquid flow rates and of liquid properties are discussed. The heat transfer can be represented by the homogeneous model with one or two pa