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Absorption of CO 2 by aqueous diethanolamine (DEA) solutions in a high shear jet absorber
Author(s) -
Chakma A.,
Chornet E.,
Overend R. P.,
Dawson W. H.
Publication year - 1990
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.5450680409
Subject(s) - diethanolamine , aqueous solution , nozzle , volumetric flow rate , analytical chemistry (journal) , absorption capacity , materials science , absorption (acoustics) , shear (geology) , mass transfer coefficient , absorption rate , chemistry , jet (fluid) , mass transfer , thermodynamics , chromatography , composite material , chemical engineering , physics , engineering , organic chemistry
CO 2 diluted with N 2 was absorbed by aqueous DEA solutions in a high shear jet absorber consisting of a high pressure stainless steel vessel with a pressure nozzle at the top. The results show that equilibrium conditions can be rapidly reached under high shear conditions. CO 2 removal expressed by moles of CO 2 absorbed per mole of DEA increased with gas flow rate and decreased with liquid flow rate. The overall mass transfer capacity coefficient K g a was found to increase with gas flow rate and solution concentration. K g a went through a maximum with solution flow rate. Increasing the CO 2 partial pressure was found to decrease K g a.