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US 6,486,369 B1Granted
Process for selective hydrogenation of an olefinic feed stream containing acetylenic and diolefinic impurities
AssigneeSud-Chemie AG
InventorsRichard W. Voight, Steven A. Blankenship
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Abstract
A process for selective hydrogenation of a C2 and C3 olefinic feed stream containing acetylenic and diolefinic impurities whereby the acetylenes and diolefins impurities are selectively hydrogenated concurrently in a vapor phase process without first separating the C2 and C3 olefinic gases into separate feed stream.
Claims14
A process for the generation of separate streams of C2 olefins and C3 olefins with substantially reduced acetylene and diolefins from an olefinic feed stream containing acetylenic and diolefinic impurities comprising
- preparing a C2 and C3 olefinic feed which comprises C2 and C3 olefins, acetylenes, diolefins and light-end gases, wherein light-end gases comprise hydrogen, carbon monoxide, and methane,
- separating the light-end gases from the olefinic feed to generate an olefinic feed stream comprising C2 and C3 olefins, acetylenes and diolefins,
- without separating the C2 and C3 olefins into a separate C2 feed stream and a separate C3 feed stream, in a tail-end hydrogenation process substantially hydrogenating the acetylenes and diolefins impurities over a catalyst bed system containing a catalyst by the use of hydrogen to the feed stream to yield an olefinic stream with a substantially reduced quantity of acetylenes and diolefins impurities, and
- after hydrogenating the acetylenes and diolefins separating the C2 olefins from the C3 olefins.
1 more element
Dependencies are inferred from the claim text.