Abstract: Systems and processes for the production of fuel and fuel blends involve the production of fuels for blending with one or more alcohols such as ethanol and/or butanol. A method for producing a fuel blend includes blending a light distillate product from an oil refinery with butanol. The fuel blending can be at the oil refinery.

Abstract: Systems and processes for the production of fuel and fuel blends involve the production of fuels for blending with one or more alcohols such as ethanol and/or butanol. A method for producing a fuel blend includes blending a light distillate product from an oil refinery with butanol. The fuel blending can be at the oil refinery.

Abstract: Systems and processes for the production of fuel and fuel blends involve the production of fuels for blending with one or more alcohols such as ethanol and/or butanol. A method for producing a fuel blend includes blending a light distillate product from an oil refinery with butanol. The fuel blending can be at the oil refinery.

Abstract: Systems and processes for the production of fuel and fuel blends involve the production of fuels for blending with one or more alcohols such as ethanol and/or butanol. A method for producing a fuel blend includes blending a light distillate product from an oil refinery with butanol. The fuel blending can be at the oil refinery.

Abstract: Methods for producing mid-grade and premium gasolines at a terminal from a seasonally adjusted high-octane blend stock are disclosed. Compositions useful as the high-octane blending stock also are disclosed.

Abstract: Hydrocarbon oils such as diesel fuels, turbine fuels and intermediate distillates may be subjected to quantitative analysis of their saturate, aromatic and polar components by supercritical fluid chromatography using carbon dioxide as the solvent. A sample of the oil is passed into a packed column of silica or the like whereby the respective fractions are separated and retained on the column. Supercritical carbon dioxide at selected pressure and temperature conditions is passed through the column to extract, separately, each of the fractions retained on the column. The extracted fraction and solvent are passed through a restrictor and expanded down to a pressure which will allow the solvent to evaporate and to permit retention or collection of the extracted fraction in a collector arrangement including a selector valve and plural collection containers.