Renewable fuels for distllate and residual marine fuel blend compositions
AssigneeExxonMobil Technology and Engineering Company
InventorsTimothy J. Anderson, Scott K. BERKHOUS, Kenneth C.H. KAR
Life of this patent
Estimating the term…
Abstract
A marine fuel or fuel blending composition that includes a renewable component that can be blended into heavy residual fuel oil or marine gasoil to meet statutory limits for sulfur. The renewable component may comprise biodiesel distillation tower bottoms and/or renewable diesel comprising at least 70% n-paraffins. The marine fuel composition may also include a biodiesel. Alternatively, the renewable component may comprise unrefined biodiesel, wherein the unrefined biodiesel has been separated to remove glycerol but has not been subject to further upgrading or purification. The marine fuel composition may also exhibit increased solvency.
Claims25
A marine fuel or fuel blending composition comprising:
- a blend of heavy residual fuel oil and one or more of:
- a) biodiesel distillation tower bottoms, and
- b) renewable diesel comprising at least 70% n-paraffins,
- wherein the marine fuel or fuel blending composition contains less than 3.5 wt. % sulfur.
A method of using biodiesel distillation tower bottoms in a marine fuel composition, the biodiesel distillation tower bottoms have a viscosity of greater than 6 cSt at 40° C., a pour point of 10° C. or higher, and an ASTM color value of 3 or more according to ASTM D1500, wherein the method comprises the step of blending biodiesel distillation tower bottoms with heavy residual fuel oil, wherein the biodiesel distillation tower bottoms are present in the marine fuel at a concentration of up to 30% by volume.
A method using renewable diesel comprising at least 70% n-paraffins in a marine fuel composition, wherein the method comprises the step of blending the renewable diesel comprising the majority of n-paraffins with heavy residual fuel oil or marine gasoil, wherein the renewable diesel is present in the marine fuel at a concentration of up to 30% by volume.
A method of improving solvency of a marine fuel or fuel blending composition, the method comprising the steps of:
- blending at least 1% by volume biodiesel distillation tower bottoms with heavy residual oil to produce the marine fuel or fuel blending composition, wherein the marine fuel or fuel blending composition exhibits improved solvency.
A marine fuel or fuel blending composition comprising:
- a blend of heavy residual fuel oil and biodiesel distillation tower bottoms, wherein the composition comprises less than 3.5 wt. % sulfur, wherein the composition comprises 1.0 vol. % to 70 vol % of the biodiesel distillation tower bottoms.
Dependencies are inferred from the claim text.