Reduced emissions transportation fuel
AssigneeSunoco, Inc.
InventorsHelen M. Doherty, H. Randolph Roehl
Life of this patent
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Abstract
Transportation fuels are provided that have reduced toxics, VOC and NOx emissions, as well as, reduced sulfur content. The transportation fuels provided meet emissions reduction requirements determined by using the EPA Complex Model and for reduced sulfur. Reduction in sulfur content allows the use of components with high concentrations of olefins, while still reducing toxics, hydrocarbon (VOCs) and NOx emissions to acceptable levels.
Claims4
An oxygenated transportation fuel complying with the emissions performance requirements of the Clean Air Act Amendments for Conventional Gasoline and for Reformulated Gasoline as predicted by the EPA Complex Model, said transportation fuel comprising a blend of hydrocarbon streams, said blend having the following properties:
- a) sulfur content of less than about 300 ppm,
- b) an octane rating of from about 87 to about 94,
- c) a 50% D-86 distillation point of less than about 235° F,
- d) a 90% D-86 distillation point of less than about 360° F,
- e) an olefins content of greater than about 15%,
- f) a Reid Vapor Pressure of less than 7.5;
- and at least one oxygenate.
Dependencies are inferred from the claim text.