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Particle mixing/segregation in gas‐solid fluidized bed of ternary mixtures
Author(s) -
Wang RongChi,
Chou ChingChang
Publication year - 1995
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.5450730602
Subject(s) - ternary operation , mixing (physics) , fluidized bed , materials science , particle (ecology) , mechanics , particle size , thermodynamics , mineralogy , chemistry , chemical engineering , physics , geology , engineering , quantum mechanics , computer science , programming language , oceanography
The particle concentration profiles and minimum fluidizing velocity of ternary mixtures were investigated experimentally. All the experiments were carried out in an 88 mm I.D. transparent acrylic column containing fluidized beds of ternary particles of different sizes, densities and shape. Mixing/segregation patterns were visualized under different operating conditions. The experimental results are compared with empirical relationships for mixing index and take‐off velocity. A new definition of the mixing index, including particle minimum fluidizing velocity and density predicted the mixing/segregation behaviour reliably. The proposed correlation of take‐off velocity agrees with the experimental results very well.