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Dispersed phase characteristics in three phase (liquid‐liquid‐solid) fluidized beds
Author(s) -
Kim Sang Done,
Kim Dong Yun,
Han Joo Hee
Publication year - 1994
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450720207
Subject(s) - materials science , phase (matter) , particle (ecology) , fluidized bed , flow (mathematics) , two phase flow , mechanics , liquid phase , particle size , analytical chemistry (journal) , thermodynamics , chromatography , chemistry , physics , geology , oceanography , organic chemistry
Two ideal droplet length ( l ,) distributions have been derived for two different droplet shapes. The dispersed phase holdup ( ϵ d ) increases with increasing dispersed phase velocity ( U d ), but decreases with increasing continuous phase velocity, ( U c ) in three‐phase fluidized beds. In the droplet‐coalescing flow regime, l v and the droplet rising velocity ( v d ) increase, but the spherical droplet fraction (k) decreases with increasing U d and u c . In the droplet‐disintegrating flow regime, the effects of u d and U c on l v and k are insignificant, but v d increases with increasing U c . Maximum values of l v , occur in the bed containing 1.7 mm diameter particles and l v has an uniform length of around 2.0 mm in beds with particle size larger than 3.0 mm.