Radial gas mixing in a circulating fluidized bed

The effects of gas velocity, solid circulation rate, the secondary air injection ratio, and secondary injection type on the radial gas-mixing coefficient Dr. in a circulating fluidized bed CFB. 0.1 m i.d., 5.3 m high. have been determined. It increases with increasing solid circulating rate and the secondary air ratioSAR., but decreases with increasing gas velocity. Based on the present and previous studies, Dr increases with increasing column diameter. The effect of secondary air injection type on the radial gas-mixing coefficient is more pronounced with the tangential than with the radial air injection. The radial gas-mixing coefficient in terms of Peclet number has been correlated based on the isotropic turbulence theory. q2000 Elsevier Science S.A. All rights reserved.
Publisher
Elsevier
Issue Date
2000
Keywords

Circulating fluidized bed; Radial gas-mixing coefficients; Secondary air injection; Circulating fluidized bed; Radial gas-mixing coefficients; Secondary air injection

Citation

Powder Technology, 113, 2000.23–29

ISSN
0032-5910
DOI
10.1016/S0032-5910(99)00288-0
URI
http://hdl.handle.net/10203/4326
Appears in Collection
CBE-Journal Papers(저널논문)
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