Low sulfur fuel with adequate combustion quality
AssigneeExxonMobil Research and Engineering Company
InventorsErin R. Fruchey, Suzanne R. Golisz, Kenneth C. H. Kar, Sheryl B. Rubin-Pitel
Life of this patent
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Abstract
Fuel compositions that are low sulfur and have adequate combustion quality are disclosed. An example fuel composition that is low sulfur may have the following enumerated properties: a sulfur content of about 0.50% or less by weight of the fuel composition; a calculated carbon aromaticity index of about 870 or less; a density at 15° C. of about 900 kg/m3 to about 1,010 kg/m3; a kinematic viscosity at 50° C. of about 100 centistokes to about 700 centistokes; and an estimated cetane number of about 7 or greater.
Claims19
A fuel composition having low sulfur content comprising from 10 vol % to 90 vol % of at least one petroleum distillate fraction having a cetane index of at least 8 and a residual component at from 10 vol % to 90 vol %, the fuel composition having the following enumerated properties:
- a sulfur content of about 0.50% or less by weight of the fuel composition;
- a calculated carbon aromaticity index of about 870 or less;
- a density at 15° C. of about 900 kg/m3 to about 1,010 kg/m3;
- a kinematic viscosity at 50° C. of about 100 centistokes to about 700 centistokes;
- and
- an estimated cetane number of about 7 to about 13.
A method of blending fuel compositions, comprising:
- blending at from 10 vol % to 90 vol % of one or more residual components and one or more petroleum distillate fractions to prepare a fuel composition, wherein the fuel composition includes from 10 vol % to 90 vol % of the one or more petroleum distillate fractions having a cetane index of at least 8, wherein the fuel composition has the following enumerated properties:
- a sulfur content of about 0.50% or less by weight of the fuel composition;
- a calculated carbon aromaticity index of about 870 or less;
- a density at 15° C. of about 900 kg/m3 to about 1,010 kg/m3;
- a kinematic viscosity at 50° C. of about 100 centistokes to about 700 centistokes;
- and
- an estimated cetane number of about 7 to about 13.
Dependencies are inferred from the claim text.