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Gasoline antiknock additive and preparation method thereof

An additive and gasoline technology, applied in the field of gasoline antiknock additives and preparation, can solve the problems of easy crystallization, easy generation of gum, high cost, and achieve the effects of not easily polluting water sources, increasing octane number, and being easy to store

Inactive Publication Date: 2013-06-12
杨玉峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN1138846C prepared a gasoline anti-knock additive with pyromellitic anhydride, isobutylamine and other substances. Although it can significantly change the anti-knock performance of some gasoline, the additive composition is complicated and the cost is high. Different types The composition of gasoline is quite different
Chinese patents CN1389546A and CN1394940A have all used N-methylaniline as the main component of gasoline anti-knock additives, but there are following problems: 1. in the gasoline components with few olefins and aromatics content, it is easy to crystallize out; 2. N-methylaniline Aniline has a wetting effect on some plastic and rubber parts; ③The blended gasoline is unstable and easy to produce gum; ④N-Methylaniline is highly toxic and pollutes seriously

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of gasoline antiknock additive, its main component is by mass percentage:

[0024] Monoisooctyldiphenylamine 85-90%

[0025] Diisooctyldiphenylamine 10-15%

[0026] A preparation method of gasoline antiknock additive, comprising the following steps:

[0027] ① Weigh 85Kg of diphenylamine into the reaction kettle, heat and melt at 60°C;

[0028] ②Start the agitator to stir, add the catalyst, and raise the temperature to 130°C;

[0029] ③ Slowly add 73Kg diisobutylene;

[0030] ④React at a constant temperature at 130°C, and monitor the reaction process with gas chromatography;

[0031] ⑤ When the content of diphenylamine is analyzed to be less than 0.5%, the catalyst is filtered out and cooled to room temperature;

[0032] ⑥ Quantitative filling.

Embodiment 2

[0034] A kind of gasoline antiknock additive, its main component is by mass percentage:

[0035] Monoisooctyldiphenylamine 80-85%

[0036] Diisooctyldiphenylamine 15-20%

[0037] A preparation method of gasoline antiknock additive, comprising the following steps:

[0038] ① Weigh 85Kg of diphenylamine into the reaction kettle, heat and melt at 60°C;

[0039] ②Start the agitator to stir, add the catalyst, and raise the temperature to 140°C;

[0040] ③Slowly add 78Kg diisobutylene;

[0041] ④React at a constant temperature at 140°C, and monitor the reaction process with gas chromatography;

[0042] ⑤ When the content of diphenylamine is analyzed to be less than 0.5%, the catalyst is filtered out and cooled to room temperature;

[0043] ⑥ Quantitative filling.

Embodiment 3

[0045] A kind of gasoline antiknock additive, its main component is by mass percentage:

[0046] Mono-1-phenylethyl diphenylamine 85-90%

[0047] Di-1-phenylethyl diphenylamine 10-15%

[0048] A preparation method of gasoline antiknock additive, comprising the following steps:

[0049] ① Weigh 85Kg of diphenylamine into the reaction kettle, heat and melt at 60°C;

[0050] ②Start the agitator to stir, add the catalyst, and raise the temperature to 130°C;

[0051] ③Slowly add 68Kg styrene;

[0052] ④React at a constant temperature at 130°C, and monitor the reaction process with gas chromatography;

[0053] ⑤ When the content of diphenylamine is analyzed to be less than 0.5%, the catalyst is filtered out and cooled to room temperature;

[0054] ⑥ Quantitative filling.

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PUM

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Abstract

The invention belongs to the field of petrochemical engineering and particularly relates to a gasoline antiknock additive and a preparation method thereof. The gasoline antiknock additive is prepared from toluene, a single alkyl substituted diphenylamine derivative and a dialky substituted diphenylamine derivative according to a certain proportion. According to the preparation method disclosed by the invention, diphenylamine and hydrocarbylation reagent are adopted to carry out reaction, and the material proportion meeting the requirement of the additive is synthesized by controlling the conditions of the reaction temperature, the molar ratio of a reactants and the like, thus greatly lowering the product cost; and substance molecules of the additive contain a conjugated system consisting of two benzene rings and a nitrogen atom, amino can be easily dissociated to produce hydrogen, and the concentration of peroxide is lowered through the reaction between free hydrogen and peroxide which is generated in the burning process of gasoline, thus improving the antiknock performance of the gasoline. The gasoline antiknock additive has the characteristics of little dosage, low cost, no side effects, high solubility in the gasoline, insolubility in water, stable property and the like.

Description

(1) Technical field: [0001] The invention belongs to the field of petrochemical industry, in particular to a gasoline antiknock additive and a preparation method. (2) Background technology [0002] The anti-knock performance of gasoline is determined by the octane number of gasoline. Linear alkanes have the lowest octane ratings; highly branched isoparaffins and aromatics have the highest octane ratings; naphthenes and alkenes are in between. There are two ways for refineries to increase gasoline octane: one is through catalytic reforming or alkylation; the other is to add octane improvers. Under the current situation of my country's oil refinery technology composition, adding antiknock agents is a more economical and effective method to increase the octane number of gasoline. [0003] Gasoline antiknock agents can be generally divided into two categories: one is metal antiknock agents, such as alkyl lead, manganese antiknock agents (methylcyclopentadiene manganese tricarb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/223C10L1/16
Inventor 杨玉峰
Owner 杨玉峰
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