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Selective absorption of H 2 S from larger quantities of CO 2 by absorption and reaction in fine sprays
Author(s) -
Bendall E.,
Aiken R. C.,
Mandas F.
Publication year - 1983
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690290109
Subject(s) - mass transfer , chemistry , absorption (acoustics) , carbon dioxide , hydrogen sulfide , selectivity , carbonate , analytical chemistry (journal) , carbon monoxide , reaction rate constant , hydrogen , chemical engineering , kinetics , chromatography , catalysis , materials science , organic chemistry , sulfur , physics , quantum mechanics , engineering , composite material
Highly selective transfer of hydrogen sulfide (H 2 S) from much larger quantities of carbon dioxide (CO 2 ) has been accomplished by absorption and reaction into fine sprays of buffered carbonate solution. Selectivity after the intensely agitated atomization zone is dramatically improved once the droplets have formed and stagnate internally. H 2 S transfer in this latter zone is virtually independent of the presence of CO 2 , even at CO 2 :H 2 S ratios of 100; CO 2 transfer, however, is adversely affected by the presence of H 2 S. The gas film resistance for mass transfer is effectively eliminated with the 50 μm mean droplet diameter. The data indicate approximately constant hydrodynamics throughout the formed droplet zone and allow good theoretical prediction of enhancement factors for this complex system. Thus the design of more efficient equipment is possible if the gas‐liquid contacting method is tailored to take advantage of differences in the transfer and reaction rate properties of gases to be separated.