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A kind of antibacterial low-sulfur diesel oil lubrication improver and preparation method thereof

A lubrication improver and low-sulfur diesel technology, which is applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of diesel bacteria, worn injectors, engine failures, etc., so as to broaden the source of raw materials and reduce condensation. point, improve the effect of wear resistance

Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And feces from bacteria can clog filters, causing starvation; worse, wear injectors and cause engine failure
The existing technology usually relies on adding a fuel cleaning system to avoid the problem of diesel bacteria breeding, which increases the cost

Method used

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  • A kind of antibacterial low-sulfur diesel oil lubrication improver and preparation method thereof
  • A kind of antibacterial low-sulfur diesel oil lubrication improver and preparation method thereof
  • A kind of antibacterial low-sulfur diesel oil lubrication improver and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Put 126g of 3-n-butenal and 0.25g of hydroquinone into the reaction kettle, start stirring at a stirring speed of 300rpm and raise the temperature to 135°C for mixing. Gradually add 500 g of tungoleic acid (commercial tungoleic acid, Anhui Ruifengde Oil Deep Processing Co., Ltd., model: T160) dropwise into the reaction kettle, so that the addition of tungoleic acid is completed within 2 hours, and the dropping rate is basically uniform. After the addition, continue to react for 9 hours. After finishing the reaction, distill under reduced pressure at 200°C for 2 hours at a pressure of 65 Pa to obtain the improver product. After calculation, the conversion rate of carbon-carbon conjugated double bond of oleic acid is 76.8%. After testing, the acid value of the product is 118.5mgKOH / g, and the freezing point is -25.6°C. Depend on figure 1 and figure 2 It can be seen that a new characteristic peak of the compound appeared at the outflow time of 14.13 minutes, which prov...

Embodiment 2

[0033] Put 63g of 3-butenal and 0.15g of hydroquinone into the reaction kettle, start stirring at a stirring speed of 300rpm, and raise the temperature to 130°C for mixing. Gradually add 500g of tungoleic acid (commercial tungoleic acid) to the reaction kettle dropwise, so that the addition of tungoleic acid is completed within 1 hour, and the dropping rate is basically uniform. Distilled under reduced pressure for 2h to obtain the improver product. The conversion rate of the carbon-carbon conjugated double bond of oleic acid is 74.9%, the acid value of the product is 119.7mgKOH / g, and the freezing point is -25.4°C.

Embodiment 3

[0035] Put 252g of 3-n-butenal and 0.5g of hydroquinone into the reaction kettle, start stirring at a stirring speed of 300rpm, and raise the temperature to 150°C for mixing. Gradually add 500g of tungoleic acid (commercial tungoleic acid) dropwise into the reaction kettle, so that the addition of tungoleic acid is completed within 3 hours, and the dropping rate is basically uniform. Distilled under reduced pressure for 2h to obtain the improver product. The conversion rate of carbon-carbon conjugated double bond of oleic acid is 76.2%, the acid value of the product is 117.8mgKOH / g, and the freezing point is -25.9℃.

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Abstract

The invention relates to a bacteriostatic low-sulfur diesel oil lubrication improver and a preparation method thereof. The unsaturated monoaldehyde and a polymerization inhibitor are mixed at 130-150° C., tungoleic acid is gradually added, and the reaction is continued for a certain period of time after the addition is completed. Distillation under reduced pressure to obtain improver products. The invention uses unsaturated monoaldehyde and tungoleic acid as raw materials, and the prepared improver has the characteristics of good lubricity, good bacteriostasis, low freezing point, low acid value, low blending ratio, etc., and can avoid Long-term storage of diesel fuel can breed bacteria and block filters.

Description

technical field [0001] The invention belongs to the technical field of diesel oil additives, and in particular relates to a bacteriostatic low-sulfur diesel oil lubrication improver and a preparation method thereof. Background technique [0002] With the implementation of the national V standard for diesel in my country, the sulfur content of diesel will drop below 10ppm, and the polar components will be greatly reduced, resulting in poor lubricity of the oil. Therefore, improving the lubricity of low-sulfur diesel is one of the key issues to solve the large-scale promotion of low-sulfur diesel. [0003] Adding vegetable oleic acid to low-sulfur diesel oil can better solve the lubricity problem of diesel oil, but usually, vegetable oleic acid mostly contains a certain amount of saturated fatty acids with a high freezing point, and existing separation methods, such as frozen pressing, distillation Refining methods, etc., are difficult to completely separate the saturated fat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/188C10L1/185C10L1/04C10L10/08C10L10/14
CPCC10L1/04C10L1/18C10L1/1857C10L1/1881C10L10/08C10L10/14C10L2230/083C10L2270/026
Inventor 程瑾李澜鹏曹长海王宜迪李秀峥
Owner CHINA PETROLEUM & CHEM CORP
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