Separations with ionic liquid solvents
AssigneeChevron Phillips Chemical Company LP
InventorsLei Ji, Ai-Fu Chang, Michael S. Driver, Hye Kyung Timken
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Abstract
Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.
Claims20
A method comprising:
- providing a process stream comprising an olefin and an alkane;
- capturing at least a portion of the olefin and at least a portion of the alkane from the process stream by an ionic liquid solvent;
- and
- recovering at least a portion of a captured olefin from the ionic liquid solvent,
- wherein the at least a portion of the olefin and the at least a portion of the alkane are captured by the ionic liquid solvent at a pressure from about 100 psia to about 250 psia.
Dependencies are inferred from the claim text.