Olefinic renewable naphtha as gasoline blend component
AssigneeExxonMobil Technology and Engineering Company
InventorsSheryl B. RUBIN-PITEL, Yolanda BONITA
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Abstract
Olefinic naphtha compositions are provided that can be incorporated into naphtha boiling range fuel products, such as gasolines. The olefinic naphtha compositions can be formed as part of a process for oligomerization of olefins to form jet boiling range compounds. It has been unexpectedly discovered that olefinic naphtha formed from such an oligomerization process can be used to form naphtha and/or gasoline blends that have reduced aromatics content while maintaining volumetric energy density and maintaining or increasing octane rating (RON and/or MON).
Claims22
An olefinic naphtha composition comprising 35 wt % to 80 wt % olefins and 6.0 wt % or less aromatics, the composition comprising a weight ratio of C8 olefins to C7 olefins of 0.5 to 2.5 and a research octane number (RON) of 89 or higher.
A blended naphtha boiling range composition comprising:
- 5.0 vol % to 50 vol % of an olefinic naphtha composition comprising 35 wt % to 80 wt % olefins and 6.0 wt % or less aromatics, relative to a weight of the olefinic naphtha composition, the olefinic naphtha composition comprising a weight ratio of C8 olefins to C7 olefins of 0.5 to 2.5 and a research octane number (RON) of 89 or higher;
- and
- 40 vol % to 95 vol % of a conventional naphtha, the conventional naphtha having an olefins content of less than 13 vol % and an aromatics content of 10 vol % to 35 vol %, relative to a weight of the conventional naphtha, the conventional naphtha comprising an anti-knock index (AKI) of 85 to 93,
- wherein the blended naphtha boiling range composition comprises an AKI of 87 or more and an olefins content of 5.0 vol % or more, relative to a weight of the blended naphtha boiling range composition.
A method for forming a blended naphtha boiling range composition comprising:
- mixing
- a) 5.0 vol % to 50 vol % of an olefinic naphtha composition comprising 35 wt % to 80 wt % olefins and 6.0 wt % or less aromatics, relative to a weight of the olefinic naphtha composition, the olefinic naphtha composition comprising a weight ratio of C8 olefins to C7 olefins of 0.5 to 2.5 and a research octane number (RON) of 89 or higher;
- and
- b) 40 vol % to 95 vol % of a conventional naphtha, the conventional naphtha having an olefins content of less than 13 vol % and an aromatics content of 10 vol % to 20 vol %, relative to a weight of the conventional naphtha, the conventional naphtha comprising an anti-knock index (AKI) of 85 to 93,
- to form a blended naphtha boiling range composition comprising an AKI of 87 or more and an olefins content of 5.0 vol % or more, relative to a weight of the blended naphtha boiling range composition.
Dependencies are inferred from the claim text.