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Cold Flow Improvement of Distillate Fuels Using Alpha-Olefin Compositions

a technology of alpha-olefin composition and distillate fuel, which is applied in the direction of lubricant composition, liquid carbonaceous fuel, fuel, etc., can solve the problems of inability to transfer the fuel to the engine, and the fluidity problems of distillate fuels, so as to improve the cold flow property and improve the cold flow of distillate fuels

Inactive Publication Date: 2013-09-19
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to improve the cold flow of distillate fuel, especially the middle distillate fuel, by adding certain additives. These additives can reduce the likelihood of the fuel becoming plugged in the cold filter, which can help to improve its overall quality and efficiency.

Problems solved by technology

Upon encountering low temperatures, distillate fuels, and in particular middle distillate fuels, tend to develop fluidity problems.
More particularly, the fluidity problems involve paraffins in the fuel agglomerate at low temperatures to form a waxy semi-solid or gel-like material that plugs pipes and filters, inhibiting transmission of the fuel to, for example, an engine.
Therefore, despite the apparent relationship between low temperature fluidity and pour point, they typically require different treatments.
Further, it may not be correctly assumed that a low temperature fluidity modifier will depress the pour point, or that a pour point depressant will improve low temperature fluidity.
(−12° C.) as well, thereby to interfere with the crystallization of the paraffins.
Despite the existence of a variety of low temperature fluidity modifiers, none provides completely satisfactory performance in all fuels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples 1-9

[0028]CFPP tests were run for three four different middle distillate fuels: Kern, Coffeyville, Cenex #3, and Hovensa. The components are as defined in Table I.

TABLE ICold Flow Improver AdditivesDF5063EVA polymer, 50% active*T3005EVA polymer, 50% activeC1608C30+ alpha-olefin-maleic anhydride polymer, 25% active1787-123C20-24 alpha-olefin-acrylic acid polymer, 50% active1787-125C20-24 alpha-olefin-acrylic acid polymer, 80% active1787-189C20-24 / C24-28 alpha-olefin polymer, 25% active1789-001C20-24 alpha-olefin-vinyl acetate, (polymer) 25% active1789-097C20-24 + C24-28 alpha-olefin-vinyl acetate (19%),(polymer) 25% active1789-155C20-24 + C24-28 alpha-olefin-vinyl acetate (9.5%),(polymer) 25% active*Active refers to actual polymer; the balance is aromatic solvent.

[0029]Table II presents the CFPP test results for four different fuels using a total of 200 ppm (includes solvent) dosage for each Example, except the blank. The comparative Examples are 2 and 4 where no alpha-olefin component i...

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Abstract

The cold flow of middle distillate fuels may be improved by adding an effective improving amount of one or more alpha-olefin compositions. The compositions include, but are not necessarily limited to, polymers of alpha-olefins per se, copolymerized or grafted alpha-olefins with maleic anhydride, acrylic acid, vinyl acetate, alkyl acrylates, methacrylic acid, and / or alkyl methacrylates. These resulting copolymers or grafted polymers may be blended with alkylphenol-formaldehyde resins, which in turn may be blended with ethylene-vinyl acetate (EVA) copolymer. In a non-limiting example, the cold filter plugging point (CFPP) may be synergistically improved as compared with the expected additive effect of using the components separately.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Patent Application 61 / 611,864 filed Mar. 16, 2012, incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]The present invention relates to improving the cold flow of distillate fuels, and more particularly relates in one non-limiting embodiment to improving the cold filter plugging point of middle distillate fuels by chemical treatment.TECHNICAL BACKGROUND[0003]Upon encountering low temperatures, distillate fuels, and in particular middle distillate fuels, tend to develop fluidity problems. In one non-limiting definition, middle distillate fuels include jet fuel, kerosene, heating oil and diesel fuel. More particularly, the fluidity problems involve paraffins in the fuel agglomerate at low temperatures to form a waxy semi-solid or gel-like material that plugs pipes and filters, inhibiting transmission of the fuel to, for example, an engine.[0004]Conventionally, this pro...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L10/14C10L1/19
CPCC10L10/14C10L1/1905C10L1/1641C10L1/1966C10L1/1955C10L1/196C10L1/1963C10L1/192
Inventor MORGAN, BENSCHIELD, JOHN A.BIGGERSTAFF, PAUL J.PHAN, KIMCHI T.WARD, JACK BRADFORD
Owner BAKER HUGHES INC
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