PMA diesel oil pour point depressant and preparation method and application thereof

A technology of diesel pour point depressant and polymerization reaction, which is applied in the petroleum industry, fuel additives, fuels, etc. It can solve the problems of diesel oil losing low-temperature fluidity, diesel engine flameout, endangering the lives of drivers and passengers, etc., and achieves excellent solubility And dispersibility, good pour point depressing effect, good pour point depressing effect

Pending Publication Date: 2022-06-10
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the winter low temperature season in the cold regions of the north and some areas, the n-alkanes in diesel will precipitate in the form of wax crystals, and continue to grow and cross-link with each other, eventually forming large wax crystals and a three-dimensional network structure. This causes the diesel to lose cold fluidity which can clog the diesel engine's copper wire filter
The precipitation of large wax crystals may also cause the flameout of the running diesel engine, affecting the normal operation of the work, which will cause serious economic losses to the transportation and production of industry and agriculture; more dangerously, the sudden flameout may cause the vehicle Loss of power source, which will endanger the lives of drivers and passengers

Method used

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  • PMA diesel oil pour point depressant and preparation method and application thereof
  • PMA diesel oil pour point depressant and preparation method and application thereof
  • PMA diesel oil pour point depressant and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A PMA-based diesel pour point depressant containing 3-benzoyl ethyl acrylate is formed by polymerization of tetradecyl methacrylate and 3-benzoyl ethyl acrylate, and its preparation method is as follows:

[0038] (1) 21.44g and 10.33g of tetradecanol and methacrylic acid were weighed respectively according to the molar ratio of tetradecanol and methacrylic acid 1:1.2, and were added to a dry and clean three-necked flask, and 45mL of toluene was added as a solvent at the same time. The three-necked flask with the reactants was moved to an oil bath and heated and stirred to fully dissolve, and then the polymerization inhibitor hydroquinone and catalyst p-toluenesulfonic acid were added to the three-necked flask and fully dissolved, wherein hydroquinone and p-toluenesulfonic acid were fully dissolved. Toluenesulfonic acid was 0.6% and 1.2% of the total mass of the reactants, respectively. The temperature was raised to 80°C for 2h of pre-reaction. After the pre-reaction, the...

Embodiment 2

[0044] The difference between the preparation process of this example and Example 1 is that in step (2), 4.24 g of tetradecyl methacrylate, 1.02 g of ethyl 3-benzoyl acrylate (tetradecyl methacrylate and 3-benzyl methacrylate) were added. The molar ratio of acyl ethyl acrylate was 3:1), and the mass of the initiator benzoyl peroxide dissolved in 10 mL of toluene was 0.0526 g.

Embodiment 3

[0046] The difference between the preparation process of this example and Example 1 is that in step (2), 5.65g of tetradecyl methacrylate, 0.68g of ethyl 3-benzoyl acrylate (tetradecyl methacrylate and 3-benzyl methacrylate) were added. The molar ratio of acyl ethyl acrylate was 6:1), and the mass of the initiator benzoyl peroxide dissolved in 10 mL of toluene was 0.0633 g.

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Abstract

The invention relates to a diesel oil pour point depressant, in particular to a PMA diesel oil pour point depressant and a preparation method and application thereof, the diesel oil pour point depressant is tetradecyl methacrylate-ethyl benzoyl acrylate copolymer, the structural general formula is shown in the specification, m: n = (1-15): 1, and both m and n are positive integers; the preparation method comprises the following steps: completely dissolving methacrylic acid and tetradecyl alcohol in methylbenzene, then adding a polymerization inhibitor and a catalyst, reacting after complete dissolution, and carrying out washing, rotary evaporation and vacuum drying on a product to obtain tetradecyl methacrylate; the preparation method comprises the following steps: completely dissolving tetradecyl methacrylate and ethyl 3-benzoyl acrylate in toluene, heating in an inert atmosphere, then adding a polymerization initiator to carry out polymerization reaction, and carrying out rotary evaporation and vacuum drying on the reaction product to obtain the PMA diesel oil pour point depressant. Compared with the prior art, the PMA diesel oil pour point depressant can effectively reduce the condensation point and the cold filter plugging point of diesel oil, so that the cold flow property of the diesel oil is improved.

Description

technical field [0001] The invention relates to a diesel pour point depressant, in particular to a PMA diesel pour point depressant and a preparation method and application thereof. Background technique [0002] Diesel is an important traditional energy source, which is a mixture of various complex hydrocarbons such as aliphatic hydrocarbons, isoparaffins, aromatic hydrocarbons and non-hydrocarbon compounds. In today's era of development of both emerging energy and traditional energy, diesel as a traditional energy still has a wide range of application value. It is not only used in the military industry, but also in industries related to the national economy and people's livelihood, such as industrial and agricultural production and transportation. However, in the cold northern regions and in the winter low temperature season in some regions, the n-alkanes in diesel will be precipitated in the form of wax crystal precipitation, and continue to grow and cross-link with each o...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/68C10L1/236C10L10/14
CPCC08F220/1818C10L1/236C10L10/14C08F220/68
Inventor 蔺华林任飞鹤卢义麟孙彬赵玉壮穆晓银薛原韩生
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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