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Contacting modes and behaviour classification of gas—solid and other two‐phase suspensions
Author(s) -
Grace John R.
Publication year - 1986
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.5450640301
Subject(s) - classification scheme , contactor , fluidized bed , cover (algebra) , mechanics , phase diagram , mixing (physics) , fluidization , phase (matter) , materials science , thermodynamics , chemistry , computer science , physics , mechanical engineering , engineering , power (physics) , organic chemistry , quantum mechanics , information retrieval
An attempt is made to extend schemes for classifying the behaviour of gas—solid contacting modes and other two‐phase systems. The regime diagram approach of Reh (1971) is modified and extended to cover the operating regions of common reactors and contactors where a gas flows upwards through a bed of solids including fixed and moving packed beds, conventional fluidized beds, circulating beds, spouted beds, and pneumatically conveyed suspensions. New boundaries are proposed between groups A and B and between groups B and D of the Geldart (1972, 1973) powder classification scheme. These boundaries reflect more recent data and allow the classification scheme to be used for gases other than air and for temperatures and pressures other than atmospheric.