Polymeric dispersants for petroleum process streams
AssigneeEcolab USA Inc.
InventorsKailash Sawhney, Abuzar Syed
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Abstract
Disclosed herein are methods and compositions for reducing fouling by natural and synthetic foulants that tend to precipitate during petroleum collecting, processing, transporting, and storing. The method includes applying one or more antifouling polymers to a petroleum product to form a treated petroleum product, wherein fouling by the treated petroleum product is reduced and a stable dispersion is formed over a wide range of processing conditions. The one or more antifouling polymers include the polymerized residues of one or more α-olefins and maleic anhydride, further wherein the maleic anhydride residues are reacted with a primary amine. Concentrates of the antifouling polymers in solvents are stable and pourable at temperatures of 0° C. to −40° C.
Claims15
A treated petroleum product composition comprising
- a petroleum product comprising a foulant;
- and
- one or more antifouling polymers, the one or more antifouling polymers comprising the polymerized residues of one or more α-olefins and maleic anhydride, wherein 80 mol %-100 mol % of the maleic anhydride residues are reacted with a primary amine defined by the formula R—NH2, wherein R is a linear or branched hydrocarbon moiety comprising 6 to 30 carbon atoms or a mixture of two or more such moieties;
- further wherein no imide moieties are detected by infrared analysis of the one or more antifouling polymers.
A concentrate composition comprising:
- a solvent;
- and
- about 15 wt % to 90 wt % of one or more antifouling polymers, the one or more antifouling polymers comprising the polymerized residues of one or more α-olefins and maleic anhydride, wherein 80 mol %-100 mol % of the maleic anhydride residues are reacted with a primary amine defined by the formula R—NH2, wherein R is a linear or branched hydrocarbon moiety comprising 6 to 30 carbon atoms or a mixture of two or more such moieties;
- further wherein no imide moieties are detected by infrared analysis of the one or more antifouling polymers.
A method of reducing fouling in one or more petroleum process streams, the method comprising
- adding about 1 ppm to 1000 ppm by weight or by volume of one or more antifouling polymers to a petroleum product to form a treated petroleum product;
- and
- disposing the treated petroleum product within petroleum process equipment to form a treated petroleum process stream,
- wherein the one or more antifouling polymers comprise the polymerized residues of one or more α-olefins and maleic anhydride, further wherein 80 mol %-100 mol % of the maleic anhydride residues are reacted with a primary amine defined by the formula R—NH2, wherein R is a linear or branched hydrocarbon moiety comprising 6 to 30 carbon atoms or a mixture of two or more such moieties;
- and wherein no imide moieties are detected by infrared analysis of the one or more antifouling polymers.
Dependencies are inferred from the claim text.