Production of higher olefins

Details Production of higher olefins Production of higher olefins

2005-04-05

2005-04-05

Dang, Thuan D. (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

C585S329000, C585S634000

Reexamination Certificate

active

06875899

ABSTRACT:
A method of making a higher olefin product from a C4+fraction separated from the hydrocarbon product produced by an oxygenate to olefin reaction unit. The C4+fraction primarily contains butenes which may be directed to a higher olefin reaction unit without removing isobutenes, butanes, and/or butadiene. The C4+fraction is particularly well suited for the production of higher olefins because of its high olefin content, low branching number, and low contaminent levels. The invention is also directed to an olefin product composition that is produced by contacting the C4+fraction with an oligomerization catalyst. The olefin composition is characterized by a relatively high octene content, and octene with a branching number less than 1.4.

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