Method for manufacturing cleaner fuels
First Claim
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1. A method of manufacturing hydrocarbon fuel, the method comprising:
- (a) removing natural polar compounds from a petroleum feedstock fraction prior to catalytically hydroprocessing the petroleum feedstock fraction to substantially decrease the concentration of natural polar compounds in the petroleum feedstock fraction, the petroleum feedstock fraction having a boiling point in the range from 110°
C. to 560°
C., and (b) catalytically hydroprocessing the petroleum feedstock fraction to produce a hydrocarbon fuel.
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Abstract
A method is provided for manufacturing cleaner fuels, in which NPC (Natural Polar Compounds), naturally existing in small quantities within various petrolic hydrocarbon fractions, are removed from the petrolic hydrocarbon fractions ranging, in boiling point, from 110 to 560° C. and preferably from 200 to 400° C., in advance of catalytic hydroprocessing. The removal of NPC improves the efficiency of the catalytic process and produces environment-friendly products, such as diesel fuel with a sulfur content of 50 ppm (wt) or lower. Also, the NPC can be used to improve fuel lubricity.
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22 Claims
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1. A method of manufacturing hydrocarbon fuel, the method comprising:
- (a) removing natural polar compounds from a petroleum feedstock fraction prior to catalytically hydroprocessing the petroleum feedstock fraction to substantially decrease the concentration of natural polar compounds in the petroleum feedstock fraction, the petroleum feedstock fraction having a boiling point in the range from 110°
C. to 560°
C., and (b) catalytically hydroprocessing the petroleum feedstock fraction to produce a hydrocarbon fuel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- (a) removing natural polar compounds from a petroleum feedstock fraction prior to catalytically hydroprocessing the petroleum feedstock fraction to substantially decrease the concentration of natural polar compounds in the petroleum feedstock fraction, the petroleum feedstock fraction having a boiling point in the range from 110°
-
17. A method for improving the lubricity of diesel fuels, the method comprising adding natural polar compounds extracted from petrolic hydrocarbons having a boiling point in the range of 200°
- C. to 400°
C. - View Dependent Claims (18, 19, 20, 21, 22)
- C. to 400°
Specification