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Preparing method for diesel oil lubricity improver

A lubricity and improver technology is applied in the field of preparation of diesel lubricity additives, which can solve the problems of reducing the lubricating ability of the engine injection system, reducing the lubricity of diesel oil, damage, etc., and achieving strong lubricating ability, improving lubricity and good lubricating ability. Effect

Active Publication Date: 2016-10-05
PETROCHINA CO LTD +1
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Problems solved by technology

[0004] Reducing the sulfur content of diesel oil can lead to a decrease in the lubricity of diesel oil, because the natural anti-wear components oxygenates, nitrogen-containing compounds, and aromatic compounds in diesel oil are removed during the hydrofinishing process, thereby reducing fuel oil. The ability to lubricate the engine injection system, resulting in premature failure of the engine's fuel injection system, such as high-pressure distribution pumps, pipeline injection pumps and nozzles

Method used

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  • Preparing method for diesel oil lubricity improver

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preparation example Construction

[0030] The dosage of each raw material in the preparation method of diesel lubricity improver:

[0031] In the present invention, the amount of each raw material used in the preparation method of the diesel lubricity improver is not particularly limited, usually in parts by weight, 100 parts of linear carboxylic acid, 2 to 100 parts of aromatic carboxylic acid, 2 to 100 parts of polyol 20 parts, 2-20 parts of amine; preferably, in parts by weight, 100 parts of linear carboxylic acid, 5-50 parts of aromatic carboxylic acid, 5-15 parts of polyol, and 5-15 parts of amine.

[0032] If the amount of aromatic carboxylic acid is less than 2 parts, the lubricating performance of the product will be deteriorated due to too little amount of aromatic carboxylic acid, while if the amount of aromatic carboxylic acid is more than 100 parts, the low-temperature fluidity of the product will be deteriorated due to the excessive amount of aromatic carboxylic acid. Nothing else works.

[0033...

Embodiment 1

[0044] Add 80 parts of linoleic acid and 20 parts of cinnamic acid to the reaction kettle, stir and mix at room temperature, feed nitrogen, and heat slowly, when the reaction temperature rises to 60 ° C, add 8 parts of ethylene glycol, and react at 180 ° C After 6 hours, 6 parts of diethanolamine were added, and the reaction was continued at 180° C. for 4 hours. After the reaction was completed, the heating was stopped, and after cooling to room temperature, a liquid diesel oil lubricity improver was obtained.

Embodiment 2

[0046] Add 90 parts of linoleic acid and 10 parts of cinnamic acid to the reaction kettle, stir and mix evenly at room temperature, introduce nitrogen, slowly heat, when the reaction temperature rises to 60 ° C, add 8 parts of glycerol, and react at 200 ° C After 6 hours, 6 parts of diethanolamine were added, and the reaction was continued at 200° C. for 4 hours. After the reaction was completed, the heating was stopped, and after cooling to room temperature, a liquid diesel oil lubricity improver was obtained.

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Abstract

A preparing method for a diesel oil lubricity improver comprises the steps that straight-chain carboxylic acid and aromatic carboxylic acid are added into a reaction kettle, stirred and mixed evenly, nitrogen is introduced at the same time, heating is slowly carried out, polyalcohol is added when the reaction temperature is increased to 50 DEC C or above, and a reaction is carried out for 4-12 h at 160-220 DEG C; then amine is added, the reaction continues for 4-12 h at 160-220 DEG C, heating is stopped after the reaction is finished, the mixture is cooled to the room temperature, and the diesel oil lubricity improver is obtained.

Description

technical field [0001] The invention relates to the field of diesel oil, in particular to a preparation method and application of a diesel oil lubricity additive. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection and the continuous introduction of relevant environmental protection regulations in various countries, environmental protection and the automotive industry have put forward higher and higher requirements for diesel quality, and the sulfur content in diesel has been strictly limited. Low sulfur has become the development of diesel inevitable trend. The automotive diesel produced in my country meets the requirements of the automotive diesel (III) standard, which stipulates that the sulfur content of the product is not more than 350 mg / kg; only the automotive diesel sold in Beijing, Shanghai, Guangzhou and other regions meets the automotive diesel (IV) requirements. Quality index requirements. On February 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/222C10L1/224C10L1/19C10L1/188C10L1/182C10L10/08
Inventor 黄卿周旭光谢建海安文杰郭鹏李海平杨淑芳高鹏
Owner PETROCHINA CO LTD
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