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Treatment of gases and dust using “droplet columns”
Author(s) -
Botton R.,
Benadda B.,
Bressat R.,
Otterbein M.
Publication year - 1997
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.5450750306
Subject(s) - diagram , bubble , chemistry , mass transfer , streams , thermodynamics , analytical chemistry (journal) , chromatography , mechanics , physics , computer network , statistics , mathematics , computer science
The properties of the air‐water state diagram, representing the liquid holdups according to gas velocities, in a 0.075 m diameter column are restated. After measurement of the interfacial areas and mass‐transfer coefficients, the part of the diagram corresponding to high gas velocities and low liquid contents (10 < U G < 14 m/s and 0.005 < U L < 0.04 m/s) was chosen for the treatment of polluted gas streams. Under these conditions, it was shown that a “droplet column” is very efficient for the treatment of gases polluted by acid vapors (SO 2 , HCl) and dust (iron oxide, talc, etc.). The cost of energy appeared more favorable than for classical bubble columns.