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Compounded diesel pour point depressant, and preparation method and application thereof

A diesel pour point depressant and technology of pour point depressant, which are used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of unsatisfactory diesel fluidity improvement effect and limited pour point depressant effect, and improve the pour point depressant effect. , Improve low temperature flow performance, overcome the effect of poor effect

Active Publication Date: 2019-08-06
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these pour point depressants can improve the low temperature fluidity of diesel oil to a certain extent, their pour point depressant effects are limited, and the effect of improving the fluidity of diesel oil at low temperature is still not ideal.

Method used

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  • Compounded diesel pour point depressant, and preparation method and application thereof
  • Compounded diesel pour point depressant, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A composite diesel pour point depressant containing polar nitrogen-containing compounds, comprising the following components and contents in parts by weight:

[0036] 30 parts of ethanolamine,

[0037] 30 parts of triethanolamine,

[0038] Myristyl methacrylate-N-vinylimidazole pour point depressant 40 parts.

[0039] Wherein, the preparation method of myristyl methacrylate-N-vinylimidazole pour point depressant is: after myristyl methacrylate and N-vinylimidazole are mixed in a mol ratio of 3:1, join in toluene solvent, Under the condition that 0.9% of the total mass of reactants is benzoyl peroxide as an initiator, the reaction is carried out at 120°C for 9 hours, and the tetradecyl methacrylate-N-vinylimidazole pour point depressant is used. The tetradecyl methacrylate-N-vinylimidazole pour point depressant that obtains is carried out NMR and infrared characterization, the result is respectively as follows figure 1 , figure 2 shown. Depend on figure 1 It can b...

Embodiment 2

[0043] A composite diesel pour point depressant containing polar nitrogen-containing compounds, comprising the following components and contents in parts by weight:

[0044] 10 parts of ethanolamine,

[0045] 30 parts of triethanolamine,

[0046] 60 parts of myristyl methacrylate-N-vinylimidazole pour point depressant.

[0047] Wherein, the preparation method of myristyl methacrylate-N-vinylimidazole pour point depressant is: after myristyl methacrylate and N-vinylimidazole are mixed in a mol ratio of 3:1, join in toluene solvent, Under the condition that 0.9% of the total mass of reactants is benzoyl peroxide as an initiator, the reaction is carried out at 120°C for 9 hours, and the tetradecyl methacrylate-N-vinylimidazole pour point depressant is used.

[0048] The preparation method of the composite diesel pour point depressant is as follows: directly mixing ethanolamine, triethanolamine and myristyl methacrylate-N-vinylimidazole pour point depressant.

[0049] When the ...

Embodiment 3

[0051] A composite diesel pour point depressant containing polar nitrogen-containing compounds, comprising the following components and contents in parts by weight:

[0052] 30 parts of ethanolamine,

[0053] 10 parts of triethanolamine,

[0054] 60 parts of myristyl methacrylate-N-vinylimidazole pour point depressant.

[0055]Wherein, the preparation method of myristyl methacrylate-N-vinylimidazole pour point depressant is: after myristyl methacrylate and N-vinylimidazole are mixed in a mol ratio of 3:1, join in toluene solvent, Under the condition that 0.9% of the total mass of reactants is benzoyl peroxide as an initiator, the reaction is carried out at 120°C for 9 hours, and the tetradecyl methacrylate-N-vinylimidazole pour point depressant is used.

[0056] The preparation method of the composite diesel pour point depressant is as follows: directly mixing ethanolamine, triethanolamine and myristyl methacrylate-N-vinylimidazole pour point depressant.

[0057] When the c...

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Abstract

The invention relates to a compounded diesel pour point depressant, and a preparation method and an application thereof. The compounded diesel pour point depressant comprises, by weight, 20-80 parts of a polar nitrogen-containing compound and 20-80 parts of a tetradecyl methacrylate-N-vinylimidazole pour point depressant. The compounded diesel pour point depressant is prepared by uniformly mixingthe polar nitrogen-containing compound with the tetramethyl methacrylate-N-vinylimidazole pour point depressant. The compounded diesel pour point depressant is added to diesel when applied, and the mass percentage content of the compounded diesel pour point depressant in the diesel is 0.1-0.5%. Compared with diesel pour point depressants in the prior art, the compounded diesel pour point depressant of the present invention contains the polar nitrogen-containing compound, can reduce the condensation point of the diesel by 14-18 DEG C and reduce the cold filter plugging point by 6-8 DEG C in test after being added to the diesel, solves the problem of poor effect of the diesel pour point depressants at a low temperature, and can further improve the low temperature fluidity of the diesel and improve the low temperature flowing performance.

Description

technical field [0001] The invention belongs to the technical field of diesel oil pour point depressant, and relates to a composite diesel oil pour point depressant and its preparation method and application. Background technique [0002] At low temperature, the solubility of n-alkanes in diesel oil will decrease, causing wax crystals to precipitate in the form of crystals, resulting in poor fluidity of diesel oil and blockage of diesel filter pipes. At present, the most effective way to improve the fluidity of diesel oil is to add a pour point depressant to diesel oil. Adding a small amount of pour point depressant can make diesel oil have good performance in harsh environments, which has important practical and economic significance. [0003] Commonly used diesel pour point depressants mainly include ethylene-vinyl acetate copolymers, acrylate polymers, polar nitrogen-containing compounds, vinyl acetate-fumarate copolymers, and maleic anhydride polymers. Although these po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C10L10/14C10L1/22C10L1/222C10L1/232
CPCC10L1/10C10L1/22C10L1/2225C10L1/232C10L10/14C10L2300/20
Inventor 薛原杨太顺陈凤飞解麦莹殷素雅韩生
Owner SHANGHAI INST OF TECH
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