Slug characteristics of polymer particles in a fluidized bed with different distributors | Zendy

See Hoon Lee | Zendy; Dong Hyun Lee | Zendy; Sang Done Kim | Zendy

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Slug characteristics of polymer particles in a fluidized bed with different distributors

Author(s) -

See Hoon Lee,

Dong Hyun Lee,

Sang Done Kim

Publication year - 2001

Publication title -

korean journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.609

H-Index - 60

eISSN - 1975-7220

pISSN - 0256-1115

DOI - 10.1007/bf02699183

Subject(s) - slug , distributor , fluidization , fluidized bed , mechanics , materials science , slug flow , body orifice , superficial velocity , thermodynamics , geology , physics , mechanical engineering , engineering , two phase flow , flow (mathematics) , paleontology

Pressure fluctuations in a fluidized bed (0.38 m-I.D.x4.4 m-high) of 1.23-mm polymer particles (LLDPE) were measured with different distributors. Slug characteristics (slug frequency and slug rising velocity) were determined by analyzing pressure fluctuations in the bed. The effects of gas velocity (0.6-1.2 m/s) and distributor geometry (opening area ratio, number of orifices and distributor types) on the slug characteristics were determined. The slug frequency decreases slightly with increasing gas velocity. However, slug rising velocity increases linearly with increasing excess fluidization velocity regardless of the distributors used.

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