Slug Characteristics of Polymer Particles in a Gas-Solid Fluidized Bed

The slug characteristics (frequency, rising velocity and length) have been determined by analyzing pressure fluctuations in a fluidized bed (0.38 m-I.D. x 4.4 m-high) of linear-low-density-polyethylene (LLDPE) and polypropylene (PP) particles. The slug characteristics of LLDPE and PP particles have been determined as a function of gas velocity (0.6-1.2 m/s) and the axial height (0.65-1.15 m) from the distributor. The rising velocity and vertical length of slug increase with increasing superficial gas velocity and the axial height of the bed. The slug shape of LLDPE particles is found to be the square-nose whereas that of PP particles is the round-nose. The slug frequency and its length have been correlated in terms of the excess fluidizing velocity, column diameter and bed height based on the data from the present and previous studies.
Publisher
Springer
Issue Date
2002-01
Language
ENG
Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.19, no.2, pp.351 - 355

ISSN
0256-1115
URI
http://hdl.handle.net/10203/4458
Appears in Collection
CBE-Journal Papers(저널논문)
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