Separations with ionic liquid solvents
AssigneesChevron Phillips Chemical Company LP, Chevron U.S.A. Inc.
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.
Claims44
A method comprising:
- providing a process stream comprising an acid gas;
- capturing at least a portion of the acid gas from the process stream by an ionic liquid solvent;
- and
- recovering at least a portion of a captured acid gas from the ionic liquid solvent,
- wherein the ionic liquid solvent comprises a Ag(I) salt, a Cu(I) salt, or combinations thereof.
A system comprising:
- a process stream comprising a gaseous component;
- a separator comprising an ionic liquid solvent, wherein the separator receives the process stream, wherein the ionic liquid solvent captures at least a portion of the gaseous component;
- a captured stream exiting the separator and comprising the captured gaseous component captured in the ionic liquid solvent;
- and
- a regenerator to receive the captured stream, wherein the regenerator regenerates the ionic liquid solvent and emits at least a portion of a recovered gaseous component,
- wherein the ionic liquid solvent comprises a Ag(I) salt, a Cu(I) salt, or combinations thereof.
Dependencies are inferred from the claim text.