Ethanol stable epoxy amine based membrane for aromatics separation
AssigneeExxonMobil Research and Engineering Company
InventorsAbhimanyu O. Pattil, Timothy D. Shaffer, David T. Ferrughelli, Beth A. Winsett, Benjamin A. McCool, Randall D. Partridge
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Abstract
The present invention is directed to a membrane for aromatics separation that is stable in an alcohol containing environment. The polymeric membrane is a epoxy amine based membrane.
Claims15
A membrane for aromatics separation comprising a polyetheramine reacted with an epoxide and formed into a membrane, wherein said membrane selectively separates aromatics from a hydrocarbon stream containing aromatics and aliphatics and at least one alcohol.
A process for separating aromatics from aliphatics in a hydrocarbon feed comprising:
- a) forming a membrane film comprising a polyetheramine reacted with an epoxide,
- b) contacting a first side of the membrane film with the alcohol containing hydrocarbon feed, said membrane preferentially absorbing aromatics over aliphatics,
- c) extracting permeate from a second side of the membrane that is higher in aromatics than the feed.
Dependencies are inferred from the claim text.