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US 4,670,151 AGranted
Process for the separation of an organic liquid mixture
AssigneeShell Oil Company
InventorJohan G. A. Bitter
Life of this patent
Estimating the term…
Abstract
A process for the separation of a two component liquid mixture is described in which the liquid mixture is passed along one side of a membrane and an extracting agent is passed on the other side of the membrane, the process being characterized by the use of a membrane impermeable to at least one component of the liquid mixture and permeable to the extracting agent.
Claims50
A process for the separation of an organic liquid mixture comprising first and second components which comprises
- (a) passing a stream of said mixture along a first side of a membrane, while concomitantly passing a stream comprising an extracting agent containing the second of the components of the mixture along the other side of the membrane, the membrane being substantially permeable to the extracting agent, but non-permeable to the first component, the extracting agent passing through said membrane and forming a second mixture containing extracting agent and both components;
- (b) passing at least a portion of the second mixture to a separation zone, and separating first component from the mixture to form a mixture of extracting agent and second component;
- (c) returning the mixture of extracting agent and second component for use in the stream of extracting agent of step (a), and separating second component from the extracting mixture.
A process for the separation of a liquid hydrocarbon mixture comprising first and second components which comprises
- (a) passing a stream of said hydrocarbon mixture along a first side of a membrane, while concomitantly passing a stream comprising an extracting agent containing the second of the components of the mixture along the other side of the membrane, the second component being soluble or substantially soluble in the extracting agent, the first component being insoluble or substantially insoluble in the extracting agent, the membrane being substantially permeable to the extracting agent, but non-permeable to the first component, the extracting agent passing through said membrane and forming a second mixture containing extracting agent and both components;
- (b) passing at least a portion of the second mixture to a separation zone, and separating first component from the mixture to form a mixture of extracting agent and second component;
- (c) returning the mixture of extracting agent and second component for use in the stream of extracting agent of step (a), and separating second component from the extracting mixture.
Dependencies are inferred from the claim text.