Removal of catalyst and/or cocatalyst residues in a polyolefin manufacturing process
AssigneeIneos USA LLC
InventorsMark A. Gessner, Sean Michael Hockett
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Abstract
The invention relates to an improved process for the manufacture of an olefin polymer composition in which corrosive trace cocatalyst and catalyst residues are removed from the hydrocarbon gas recycle stream prior to compression and re-use in the polymerization zone(s).
Claims10
A process for treating an effluent stream from an olefin polymerization reactor, said effluent stream comprising a polymer component and a non-polymer component, the non-polymer component containing one or more catalysts and/or aluminum alkyl cocatalysts, the process comprising the step of scrubbing at least part of the non-polymer component with an oleic acid and light-oil mixture in order to reduce the concentration of catalysts and/or aluminum alkyl cocatalysts and produce a purified stream, wherein the olefin polymerization reactor produces more than 16,000 pounds of polymerized olefin per hour.
Dependencies are inferred from the claim text.