Process for removal of alkynes and/or dienes from an olefin...

Details Process for removal of alkynes and/or dienes from an olefin... Process for removal of alkynes and/or dienes from an olefin...

2008-05-27

2008-05-27

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

C585S326000, C585S329000, C585S330000

Reexamination Certificate

active

07378562

ABSTRACT:
The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hydrogen and a first hydrogenation catalyst. The hydrogenation of the first olefin stream produces a second olefin stream that has unreacted hydrogen. The second olefin stream is contacted with a second hydrogenation catalyst producing a third olefin stream. The third olefin stream has low levels of hydrogen and alkynes and/or dienes.

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