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US 10,870,809 B2Granted
Refinery antifoulant process
AssigneeInfineum International Limited
InventorsAndrew C. Sutkowski, Krzysztof J. Maranski, Paul Kerby
Life of this patent
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Abstract
Fouling in a hydrocarbon refining process is reduced by adding to a crude hydrocarbon for a refining process, an additive combination including: (A) a polyalkenyl-substituted carboxylic acid or anhydride, and (B) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent, where the mass:mass ratio of (A) to (B) is in the range of 10:1 to 1:10, and the treat rate of the additive combination is in the range of 5 to 1000 ppm by mass.
Claims10
A method for reducing fouling in a hydrocarbon refining process comprising providing a crude hydrocarbon for a refining process;
- and adding to the hydrocarbon an additive combination comprising:
- (A) a polyalkenyl-substituted carboxylic acid or anhydride, and
- (B) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent dispersed in diluent,
- wherein the mass:mass ratio of (A) to (B) is in the range of 10:1 to 1:10, and the treat rate of the additive combination is in the range of 5 to 1000 ppm by mass.
1 more element
Dependencies are inferred from the claim text.