Fuel compositions
AssigneeShell Oil Company
InventorsClaire Griffins, Richard Hugh Clark, Christopher William Clayton, Paul Anthony Stevenson, Robert Wilfred Matthews Wardle
Life of this patent
Estimating the term…
Abstract
Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R5 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.
Claims10
A gas oil fuel composition comprising at least one base fuel, at least one Fischer-Tropsch derived fuel and a compound according to formula (I):
- wherein each of R1-R5 is a C1-3 alkyl group;
- and
- X is a nitrogen-containing group.
A method of reducing the cetane number of a gas oil fuel composition, said fuel composition comprising at least one Fischer-Tropsch derived fuel, said method comprising adding a compound according to formula (I):
- wherein each of R1-R5 is a C1-3 alkyl group;
- and
- X is a nitrogen-containing group,
- to said fuel composition.
A process for the preparation of a gas oil fuel composition, said fuel composition comprising at least one base fuel at least one Fischer-Tropsch derived fuel, which process comprises blending a compound according to formula (I):
- wherein each of R1-R5 is a C1-3 alkyl group;
- and
- X is a nitrogen-containing group,
- and at least one fuel component.
A method of operating a fuel consuming system, which method comprises reducing the cetane number of a gas oil fuel composition by adding a compound according to formula (I):
- wherein each of R1-R5 is a C1-3 alkyl group;
- and
- X is a nitrogen-containing group,
- to said fuel composition, and then introducing into the system said fuel composition.
Dependencies are inferred from the claim text.