Diesel oil pour point depressant and preparation method thereof

A technology of diesel pour point depressant and styrene, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc. It can solve the problems of high wax content, complex composition, poor pour point depressant effect, etc., and achieve the reduction of diesel cold filter point Effect

Inactive Publication Date: 2010-06-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic additives used to improve the low-temperature fluidity of -20 and -35 diesel oil have been widely used, but for No. 0 diesel oil, due to the high wax content and complex composition, the pour point depressing effect is poor

Method used

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  • Diesel oil pour point depressant and preparation method thereof
  • Diesel oil pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the percentage by weight, 30% of styrene-maleic anhydride copolymer stearyl, 50% of poly-α-stearyl methacrylate and 20% of alkylnaphthalene were weighed respectively. Wherein the alkylnaphthalene is C14-C20 alkylnaphthalene.

[0017] Add styrene-maleic anhydride copolymer stearyl ester, poly-alpha-methacrylic acid stearyl ester, and alkylnaphthalene to the container in sequence at 70°C, stir and mix evenly to make a diesel pour point depressant. Add this pour point depressant to No. 0 Beijing oil, Dushanzi, Jinweixi, and Zhenhai diesel oil, and the pour point depressant results are shown in Table 1.

[0018] Table 1

[0019]

Embodiment 2

[0021] According to the percentage by weight, 20% of styrene-maleic anhydride copolymer stearyl, 60% of poly-α-stearyl methacrylate and 20% of alkylnaphthalene were weighed respectively. Wherein the alkylnaphthalene is C14-C20 alkylnaphthalene.

[0022] Add styrene-maleic anhydride copolymer stearyl ester, poly-alpha-methacrylic acid stearyl ester, and alkylnaphthalene to the container in sequence at 70°C, stir and mix evenly to make a diesel pour point depressant.

Embodiment 3

[0024] According to the percentage by weight, 25% of styrene-maleic anhydride copolymer stearyl, 55% of poly-α-stearyl methacrylate and 20% of alkylnaphthalene were weighed respectively. Wherein the alkylnaphthalene is C14-C20 alkylnaphthalene.

[0025] Add styrene-maleic anhydride copolymer stearyl ester, poly-alpha-methacrylic acid stearyl ester, and alkylnaphthalene to the container in sequence at 70°C, stir and mix evenly to make a diesel pour point depressant.

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Abstract

The invention provides a diesel oil pour point depressant, which comprises the following components in percentage by mass: 20 to 40 percent of phenylethylene-maleic anhydride copolymer fatty ester, 40 to 60 percent of poly alpha-methacrylic acid fatty ester and 20 to 40 percent of alkyl naphthalene. The diesel oil pour point depressant of the invention can obviously improve the low-temperature rheological property of the diesel oil and reduce the cold filter plugging point of the diesel oil.

Description

technical field [0001] The invention belongs to the field of diesel oil pour point depressants, and relates to a diesel oil pour point depressant, in particular to a pour point depressant suitable for No. 0 diesel oil. Background technique [0002] Diesel pour point depressant (also known as diesel low temperature flow improver) is an important additive in the production and use of diesel. Diesel pour point depressant can eutectic and adsorb with the wax precipitated by diesel oil at low temperature, prevent paraffin wax from growing up, and improve the low temperature fluidity of diesel oil. At present, the domestic additives used to improve the low-temperature fluidity of -20 and -35 diesel oils have been widely used. However, for No. 0 diesel oil, due to its high wax content and complex composition, the pour point depressing effect is poor. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned shortcomings of the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/196C10L1/16C10L10/14
Inventor 刘淑玲仝建波杜经武
Owner SHAANXI UNIV OF SCI & TECH
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