Separation of hydrocarbon dewaxing and deasphalting solvents from dewaxed and/or deasphalted oil using interfacially polymerized membrane
AssigneeExxon Research & Engineering Co.
InventorTan-Jen Chen
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Abstract
Hydrocarbon solvents used or the dewaxing and/or deasphalting of oils can be recovered by the selective permeation of said solvents through an interfacially polymerized membrane under reverse osmosis conditions.
Claims7
A method comprising separating hydrocarbon solvents used for dewaxing and/or deasphalting oils from said dewaxed and/or deasphalted oil by contacting the dewaxed and/or deasphalted oil containing hydrocarbon solvent selected from the group consisting of C.sub.3 to C.sub.6 alkane or alkene and mixtures thereof with an interfacially polymerized membrane on microporous ultrafiltration support baking under reverse osmosis conditions, said interfacially polymerized membrane comprising the reaction product of a multifunctional amino compound dissolved in water with a polyfunctional agent dissolved in an organic solvent.
Dependencies are inferred from the claim text.