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US 8,999,011 B2Granted
Fuel compositions and methods for making same
AssigneeExxonMobil Research and Engineering Company
InventorsDavid Lawrence Stern, Salvatore R. Di Mauro, Aldo Roccaro, Paul William Bessonette
Life of this patent
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Abstract
This invention relates to low sulfur marine/bunker fuel compositions and methods of making same. Contrary to conventional marine/bunker fuel compositions/methods, the inventive lower sulfur compositions/methods focus on use of mostly uncracked components, such as (cat feed) hydrotreated gasoils, and/or can also have reduced contents of residual components.
Claims12
A low sulfur marine and/or bunker fuel composition comprising:
- 30 vol % to 100 vol % of an uncracked, hydrotreated gasoil product having at most 5000 wppm sulfur content, a pour point of at least 7° C., a T5 boiling point of at least 280° C., a T50 boiling point of at least 400° C., and a kinematic viscosity of at least 12 cSt at about 50° C.;
- and
- up to 70 vol % of other components, selected from viscosity modifiers, pour point depressants, lubricity modifiers, antioxidants, and combinations thereof,
- wherein the low sulfur marine and/or bunker fuel composition has:
- at most 5000 wppm sulfur content;
- at most 25 vol %, based on all components of the marine and/or bunker fuel composition, of residual components selected from crude fractionation vacuum resid, deasphalted vacuum resid, slurry oil, and combinations thereof;
- less than 50 vol %, based on all components of the marine and/or bunker fuel composition, of residual components, components subject to a refinery cracking step, or both;
- and
- at least one of a kinematic viscosity at about 50° C. from 12 cSt to 50 cSt, a density at about 15° C. from 0.90 g/cm3 to 0.94 g/cm3, a pour point from 7° C. to 45° C., and a calculated carbon aromaticity index of 850 or less.
6 more elements
Dependencies are inferred from the claim text.