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Numerical Simulation of Particle Segregation in Vibration Fluidized Beds
Author(s) -
Sun Liyan,
Zhao Feixiang,
Zhang Qinghong,
Li Dan,
Lu Huilin
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400158
Subject(s) - vibration , discrete element method , fluidized bed , mechanics , particle (ecology) , materials science , mixing (physics) , amplitude , degree (music) , particle size , thermodynamics , physics , acoustics , engineering , optics , geology , chemical engineering , oceanography , quantum mechanics
The influence of vibration parameters on the segregation phenomenon of a binary mixture in a vibration fluidized bed is investigated. Initially, the mixture composed of spherical balls with different densities but same diameter is in a perfect mixing state in the bed. The motion of particles is simulated based on the discrete element method. The effects of friction coefficient, vibration frequency, amplitudes, and gas velocity are analyzed. The coefficient of segregation to the degree of particle segregation is calculated for different operating conditions. The segregation degree in the vibration fluidized bed is found to be higher than that in the bed without vibration. The curve for the segregation degree exhibits a single peak value which represents the optimal segregation result.