Composition for reducing polynuclear aromatic hydrocarbon emissions
AssigneeInaeris Technologies, LLC
InventorsVicente Sanchez, Jeffrey C. Trewella, Roger L. Leisenring, Jr.
Life of this patent
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Abstract
Emissions of polynuclear aromatic hydrocarbons (PAHs) from diesel engines may be reduced by blending a renewable hydrocarbon distillate with a base diesel fuel. The base diesel may be a fossil diesel fuel, a Fischer-Tropsch diesel fuel as well as a hydroprocessed biodiesel fuel or a combination thereof. The renewable hydrocarbon distillate is a fraction from hydrotreated bio-oil having a boiling point between from about 320° F. to about 700° F.
Claims22
A diesel fuel composition comprising a renewable hydrocarbon distillate comprising electrophilic hydrogen donors and having less than 25 parts per million weight (ppmw) sulfur and produced by hydrotreating an oil derived from the conversion of a lignocellulosic biomass and removing sulfur from the hydrotreated oil, wherein the renewable hydrocarbon distillate has a boiling point between from about 320° F. to about 700° F., and further wherein the diesel fuel composition, when introduced into a diesel engine, reduces polynuclear aromatic hydrocarbon engine exhaust emissions.
A diesel fuel composition having less than or equal to 0.0015 percent by weight sulfur, the diesel fuel composition comprising a base diesel and a renewable hydrocarbon distillate, the renewable hydrocarbon distillate having a boiling point between from about 320° F. to about 700° F., the diesel fuel composition prepared by:
- (a) thermocatalytically converting lignocellulosic material in a biomass fluidized catalytic cracking unit;
- (b) removing 90 to 95 wt. % of solids from the thermocatalytically converted lignocellulosic material;
- (c) hydrotreating the product of (b) to render a deoxygenated stream;
- (d) removing sulfur from the deoxygenated stream;
- (e) separating a hydrocarbon distillate fraction having a boiling point between from about 320° F. to about 700° F. diesel fuel from the deoxygenated stream of (d) to render the renewable hydrocarbon distillate;
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- (f) blending the renewable hydrocarbon distillate with a petroleum diesel fuel, a Fischer-Tropsch diesel fuel, a hydroprocessed biodiesel derived from an ester or from a fatty acid, or a combination thereof.
A diesel fuel composition comprising a base diesel and a renewable hydrocarbon distillate, the diesel fuel composition prepared by:
- (a) thermocatalytically converting lignocellulosic biomass to a bio-oil containing stream;
- (b) separating solids from the bio-oil containing stream to render a separated bio-oil containing stream;
- (c) subjecting the separated bio-oil containing stream to hydrotreatment to render hydrotreated bio-oil;
- (d) removing sulfur from the hydrotreated bio-oil and recovering distillate having a boiling point between from about 320° F. to about 700° F. from the hydrotreated bio-oil, wherein the amount of sulfur in the recovered distillate is less than 25 parts per million weight (ppmw) and further wherein the recovered distillate contains electrophilic hydrogen donors;
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- (e) mixing the recovered distillate from step (d) with the base diesel wherein the amount of sulfur in the diesel fuel composition is less than or equal to 0.0015 percent by weight.
Dependencies are inferred from the claim text.