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Particle size and density changes during fluidized‐bed combustion
Author(s) -
Jung K.,
La Nauze R. D.
Publication year - 1983
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.5450610221
Subject(s) - char , petroleum coke , materials science , fluidized bed , coke , coal , particle (ecology) , combustion , particle density , particle size , mechanics , composite material , chemical engineering , mineralogy , metallurgy , thermodynamics , waste management , chemistry , geology , physics , engineering , oceanography , organic chemistry , volume (thermodynamics)
Experiments have been performed which demonstrate that petroleum coke particles (initial diameters between 7 and 13 mm) and brown coal char (initial diameter between 3.5 and 6.4 mm) burn in a manner close to that of an ideal shrinking sphere. These observations confirm the previously assumed mode of burning for particles in fluidized‐bed combustors. Analysis of the data for petroleum coke indicates that pore diffusion may become increasingly significant for particles less than 5 mm in diameter. The method of data presentation provides a sensitive means of demonstrating the effect of particle attrition.