Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By membrane – selective septum – or coalescer
Patent
1994-02-01
1996-03-12
Gibson, Sharon
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By membrane, selective septum, or coalescer
585819, 210644, 210649, 210650, 210651, C07C 7144, C07C 710
Patent
active
054988233
ABSTRACT:
This invention relates to a method for effectively separating an unsaturated hydrocarbon from a feedstock containing at least two similar unsaturated hydrocarbons comprising passing the feedstock over one side of an ionopore membrane charged with a facilitator having an affinity for each of the at least two similar unsaturated hydrocarbons and recovering from a second side of the membrane permeate containing predominantly one of the at least two similar unsaturated hydrocarbons, the similar unsaturated hydrocarbons being selected from the group consisting essentially of aromatic, alkene, and diene hydrocarbons.
This invention further relates to a method for achieving liquid phase separation of at least two competing components from a feedstock containing the components such that the separation factor for the competing components is at least about 4 times the separation factor calculated when permeating single components using the same membrane and under the same conditions.
REFERENCES:
patent: 3758605 (1973-09-01), Hughes et al.
patent: 4614524 (1986-09-01), Kraus
patent: 5191151 (1993-03-01), Eriksen et al.
Funke, Hans H. et al, "Separation of Gaseous Olefin Isomers Using Facilitated Transport Membranes", pp. 229-236, (1993) Journal of Membrane Science, 82.
Thoen, P. M., et al, "Unexpectedly Large Selectivities for Olefin Separations Utilizing Silver Ion in Ion-Exchange Membranes", pp. 1262-1269, (1994), The Journal of Physical Chemistry.
Koval Carl A.
Noble Richard D.
Thoen Paul M.
Gibson Sharon
Regents of the University of Colorado
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