Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1994-07-15
1996-03-12
Dawson, Robert A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210651, 210749, 210765, 210774, 210805, 95 50, 95288, B01D 6100, B01D 1104
Patent
active
054983398
ABSTRACT:
A fluid mixture from which an unsaturated hydrocarbon has to be separated, is passed in the first stage at superatmospheric pressure to one side of a first semiselective gas separation membrane with a non-porous active layer, and a liquid complexing agent is passed along the other side of said first membrane, where said unsaturated hydrocarbon is bound through complexation in the interface of membrane and complexing agent. In the second stage said unsaturated hydrocarbon is dissociated from the complexing agent through temperature increase, the mixture of complexing agent and dissociated unsaturated preferably is passed at superatmospheric pressure to one side of a second semiselective membrane with a non-porous active layer and the unsaturated hydrocarbon migrates to the other side of the membrane and is discharged. Finally, the complexing agent is recycled.
REFERENCES:
patent: 3758605 (1973-09-01), Hughes et al.
patent: 3800506 (1974-04-01), Hughes et al.
patent: 4060566 (1977-11-01), Yahnke
patent: 4147754 (1979-04-01), Ward, III
Creusen Raimond J. M.
Hanemaaijer Jan H.
Hendriks Everardus C. A.
Dawson Robert A.
DSM N.V.
Jones Kenneth M.
Nederlandse Organisatie Voor Toegepast Natuurwetenschappelljk On
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