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Fluidization characteristics of fine particles
Author(s) -
Chen Peishi,
Pei David C. T.
Publication year - 1984
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.5450620403
Subject(s) - fluidization , channelling , particle (ecology) , mechanics , function (biology) , materials science , physics , thermodynamics , geology , fluidized bed , ion , oceanography , quantum mechanics , evolutionary biology , biology
A new voidage function is defined based on the Blake–Kozeny equation. This voidage function gives better correlations than those heretofore used in describing minimum fluidization characteristics. Due to the inter‐particle cohesive forces, the channelling and bubbling often exist in the fluidization of fine particles. In consideration of the channelling effect, a correlation of the fluidization friction factor is proposed. It is also shown in experiments that the channelling in fine particle systems is reduced when coarser particles are added.