Exxonmobil Chemical Patents Inc.

Marc P Puttemans

Jihad Mohammed Dakka

Stephen Harold Brown

Keith Holroyd Kuechler

Steven E Silverberg

John Stephen Godsmark

Georges Marie Mathys

An Verberckmoes

Roger Eijkhoudt

Mark R Welford

Stephen Brown

Hans Goris

A hydrocarbon composition that comprises species of at least 3 different carbon numbers, at least about 95 wt % non-normal hydrocarbons, no greater than 1000 wppm aromatics, no greater than 10 wt % naphthenes, and also has a certain boiling point range; and a process for making the hydrocarbon composition.

Olefin oligomerization and compositions therefrom

A feedstock containing at least 1 wt % butenes, at least 1 wt % pentenes, at least 1 wt % hexenes, at least 10 wppm Cdienes, at least 10 wppm Cdienes, and optionally at least 10 wppm Cdienes can be selectively hydrogenated over a catalyst (e.g., a noble metal) to form a stream containing 100 wppm to 4000 wppm total dienes. The hydrogenated stream, and an olefinic recycle stream having less than 10 wt. % Cmoieties, can be contacted with a molecular sieve catalyst, e.g., at a recycle to feed ratio between 0.1 and 3.0, at a WHSV of at least 1.0 based on olefin in the feed, and at a reactor &#x394;T no greater than 40&#xb0; F. (22&#xb0; C.), thus forming a reaction product that can then be separated into a distillate, e.g., having from 1 wt % to 30 wt % non-normal Colefins, and the aforementioned olefinic recycle stream.

Feedstock preparation of olefins for oligomerization to produce fuels

A hydrocarbon composition comprises at least 90 wt. % of Cto Cnon-normal olefins, non-normal saturates or combinations thereof based on the weight of the hydrocarbon composition, at least 2 wt. % and not greater than 25 wt. % of Chydrocarbons based on the weight of the hydrocarbon composition, and less than 15 wt. % of C+ hydrocarbons based on the weight of the hydrocarbon composition, wherein said hydrocarbon composition has a specific gravity at 15&#xb0; C. of at least 0.730 and less than 0.775. The composition is produced by oligomerization of at least one Cto Colefin and an olefinic recycle stream containing no more than 10 wt. % of C+ non-normal olefins. The composition is useful in producing fuel blends, such as jet fuel and diesel fuel.

Hydrocarbon compositions useful for producing fuels and methods of producing the same

A process for producing a hydrocarbon composition that comprises contacting a feed stream, that comprises at least one Cto Colefin, and an olefinic recycle stream, that comprises a first olefinic recycle stream and no more than 10 wt % of C+ non-normal olefins, with a molecular sieve catalyst in a reaction zone under olefin oligomerization conditions producing an oligomerization effluent stream; separating the oligomerization effluent stream to produce a first olefinic stream, that has a weight ratio of C&#x2212;/(C-C) molecules from about 0.8 to about 1.2 times the weight ratio of C&#x2212;/(C-C) molecules found in the oligomerization effluent stream, and a first hydrocarbon product stream, that comprises at least 1 wt % and no more than 30 wt % of Cnon-normal olefin; and splitting the first olefinic stream to produce the first olefinic recycle stream and a first purge stream.

Olefin oligomerization

Growing community of inventors

Schepdaal, Belgium

Marc P Puttemans