Drying Characteristics of Fine Powders in an Inert Medium Circulating Fluidized Bed

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The effects of inlet gas velocity (1.53-1.75 m/s), inlet gas temperature (50-80 degrees C), mass ratio between fine powder and inert particle (F/I ratio, 0.05-0.2) and initial water content (8.5-31.6 wt%, wet basis) on the drying rate were determined in an inert medium circulating fluidized bed (0.085 in ID x 1.0 in high). Glass heads (d(p) = 327.5 mu m, rho(s) = 2,500 kg/m(3)) as inert particles and poly methyl methacrylate (PMMA) beads (d(P) = 12.5 mu m, rho(s) = 1,190 kg/m(3)) as fine powders were used. The drying rate increases with increasing inlet gas temperature, gas velocity and the F/I ratio. The effect of initial water content on the drying rate was negligible compared with the other variables. The obtained drying rate data have been correlated with inlet gas temperature, gas velocity, F/I ratio, and the initial water content.
Publisher
SOC CHEMICAL ENG JAPAN
Issue Date
2008-07
Language
English
Article Type
Article; Proceedings Paper
Citation

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, v.41, no.7, pp.705 - 709

ISSN
0021-9592
DOI
10.1252/jcej.07WE066
URI
http://hdl.handle.net/10203/88081
Appears in Collection
CBE-Journal Papers(저널논문)
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