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Diesel oil pour-point and viscosity reducer, and preparation method thereof

A technology of viscosity reducer and diesel oil, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc. It can solve the problems of poor viscosity reduction rate, small limitations, small freezing point and cold filter point, etc., and achieve good low temperature flow sexual effect

Inactive Publication Date: 2014-03-19
JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the existing pour point depressants and viscosity depressants that have poor viscosity reduction rate, certain limitations, and the range of reducing the freezing point and cold filtration point is too small, and can greatly reduce the cold filtration point and freezing point of diesel oil. and viscosity, and is widely applicable to various diesel oils with small limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0023] Take the following medicines by quality:

[0024] Ethylene-vinyl acetate copolymer 23 parts

[0025] 17 parts of styrene-stearyl maleate copolymer

[0026] Polymethacrylate 15 parts

[0027] 6 parts of nonionic surfactant

[0028] 8 parts ethyl acetate

[0029] 6 parts maleic anhydride

[0030] No. 200 solvent oil 25 parts

[0031] The ethylene-vinyl acetate is prepared according to the following method: put vinyl acetate and ethylene into the autoclave according to the molar ratio of 1:2, control the pressure at 12Mpa, the temperature is 180°C, and use 1wt% of the initiator azo Diisobutyronitrile or benzoyl peroxide can be polymerized for 3 hours to prepare ethylene-vinyl acetate copolymer.

[0032] Described styrene-stearyl maleate copolymer is made according to the following method: styrene and maleic anhydride are added reactor according to molar ratio 1:2, take dibenzamide peroxide as initiator, with Toluene is used as a solvent, and the temperature is raise...

Embodiment 2

[0042] Take the following medicines by quality:

[0043] Ethylene-vinyl acetate copolymer 25 parts

[0044] 15 parts of styrene-stearyl maleate copolymer

[0045] Polymethacrylate 15 parts

[0046] Non-ionic surfactant 8 parts

[0047] 6 parts ethyl acetate

[0048]6 parts maleic anhydride

[0049] No. 200 solvent oil 25 parts

[0050] The ethylene-vinyl acetate is prepared according to the following method: put vinyl acetate and ethylene into the autoclave according to the molar ratio of 1:2, control the pressure at 12Mpa, the temperature is 180°C, and use 1wt% of the initiator azo Diisobutyronitrile or benzoyl peroxide can be polymerized for 3 hours to prepare ethylene-vinyl acetate copolymer.

[0051] Described styrene-stearyl maleate copolymer is made according to the following method: styrene and maleic anhydride are added reactor according to molar ratio 1:2, take dibenzamide peroxide as initiator, with Toluene is used as a solvent, and the temperature is raised t...

Embodiment 3

[0061] Take the following medicines by quality:

[0062] Ethylene-vinyl acetate copolymer 27 parts

[0063] 13 parts of styrene-stearyl maleate copolymer

[0064] Polymethacrylate 12 parts

[0065] 6 parts of nonionic surfactant

[0066] 5 parts ethyl acetate

[0067] 6 parts maleic anhydride

[0068] No. 200 solvent oil 25 parts

[0069] The ethylene-vinyl acetate is prepared according to the following method: put vinyl acetate and ethylene into the autoclave according to the molar ratio of 1:2, control the pressure at 12Mpa, the temperature is 180°C, and use 1wt% of the initiator azo Diisobutyronitrile or benzoyl peroxide can be polymerized for 3 hours to prepare ethylene-vinyl acetate copolymer.

[0070] Described styrene-stearyl maleate copolymer is made according to the following method: styrene and maleic anhydride are added reactor according to molar ratio 1:2, take dibenzamide peroxide as initiator, with Toluene is used as a solvent, and the temperature is raise...

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PUM

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Abstract

The invention discloses a diesel oil pour-point and viscosity reducer, and a preparation method thereof. The diesel oil pour-point and viscosity reducer comprises following ingredients, by weight, 20 to 30 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of styrene-maleic acid octadecanol ester copolymer, 10 to 20 parts of polymethacrylate, 5 to 10 parts of a nonionic surfactant, 5 to 10 parts of ethyl acetate, 5 to 10 parts of maleic anhydride, and 25 to 30 parts of solvent oil No.200. The diesel oil pour-point and viscosity reducer is capable of avoiding defects of existing pour-point depressants and viscosity reducers that viscosity reducing rate is low, application is restricted, pour-point reducing amplitude, and viscosity reducing amplitude are both small; is capable of reducing cold filter plugging point, pour point and viscosity of diesel oil greatly; and can be widely used for various diesel oils; and limitation is less.

Description

technical field [0001] The invention belongs to the technical field of diesel oil additives, and in particular relates to a diesel pour point depressant, a viscosity depressant and a preparation method. Background technique [0002] Diesel oil is a complex hydrocarbon mixture containing multiple components. Wax crystals will be precipitated at low temperatures. As the temperature drops, the wax crystals will increase and finally form three-dimensional network crystals. When the crystals grow to a certain extent, they will block the filter. net, thereby rendering the entire diesel engine unusable. Therefore, improving the low-temperature fluidity of diesel oil is one of the main problems to be solved urgently to increase the output of diesel oil. [0003] Ordinary diesel oil contains more straight-chain alkanes, so it is easy to condense into paraffin and precipitate when the temperature is low, which will block the oil circuit of the diesel engine and affect the normal oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/196C10L1/197C10L1/19C10L1/18C10L10/14
Inventor 车春玲
Owner JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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