Patent ID: 6764602
Filing Date: 2004-07-20
Classification: C10G,Y02P

Abstract:
A method of removing water and/or oxygenated hydrocarbons from an olefin stream, comprising:contacting an oxygenate with an olefin forming catalyst to form an olefin stream, wherein the olefin stream comprises olefin and oxygenated hydrocarbon; cooling the olefin stream to form a condensed water containing stream and an olefin vapor stream; contacting the olefin vapor stream with caustic wash to remove carbon dioxide; and contacting the caustic washed olefin stream with an absorbent in an absorption system to absorb the water and/or oxygenated hydrocarbon from the olefin stream, wherein the absorbent is selected from the group consisting of a polyol, amine, amide, nitrile, heterocyclic nitrogen containing compound, and mixtures thereof.