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Composition with diesel antiwear properties and diesel composition and their preparation method

A composition and performance technology, applied in biofuels, hydrocarbon oil treatment, petroleum industry, etc., can solve problems affecting product use and cumbersome steps, and achieve the effects of improving lubricity, easy availability of raw materials, and small average coefficient of friction

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method steps are cumbersome, and unreacted raw materials such as fatty acids and polyols in the reaction product remain too much in the product, which affects the use of the product

Method used

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  • Composition with diesel antiwear properties and diesel composition and their preparation method
  • Composition with diesel antiwear properties and diesel composition and their preparation method
  • Composition with diesel antiwear properties and diesel composition and their preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] The source of the raw material can be vegetable oil, or tall oil fatty acid recovered from animal oil or papermaking waste liquid. In order to achieve the above-mentioned fatty acid composition, the crude fatty acid is generally refined first. The refining methods include rectification, film Evaporation, molecular distillation and other distillation methods remove impurities and unsaponifiable matter, and methods such as urea inclusion, solvent low-temperature freezing filtration, and pressure filtration can also be used to reduce the content of saturated fatty acids. According to a preferred embodiment of the present invention, the raw material is obtained from biodiesel through rectification, saponification and acidification.

[0040] In step (1), the esterification reaction can utilize conventional esterification methods, such as adding a catalyst or performing the reaction at high temperature without a catalyst. The catalyst can be an acid catalyst, a base catalyst ...

Embodiment 1

[0056] (1) Esterification reaction

[0057] 500g of tall oil fatty acid (Arizonal company brand is 2LT product, cloud point-10 ℃) and 179.8g of glycerol are placed in a reactor equipped with electric stirrer, thermometer, reflux condenser, reflux water separator, heated and stirred The temperature was raised to 190°C, and the water generated by the reaction was carried out by purging with nitrogen and condensed into the water separator. After 10 hours of reaction, 27.6 g of water was separated, and 638.9 g of the reaction product was collected. The analysis results are shown in Table 2;

[0058] (2) Molecular distillation

[0059] 300 g of the reaction product from the previous step was subjected to a molecular distillation with a VKL70-5FDRR full-heating full-gear pump molecular distillation device of the German VTA company, with a controlled temperature of 145 ° C and an absolute pressure of 1.0 Pa. 278 g of the molecular distillation heavy fraction was collected as the fin...

Embodiment 2

[0063] (1) Esterification reaction

[0064] The NaOH of 500g refined cottonseed oil fatty acid (cloud point-13 ℃), 167.2g glycerol and 5.3g is placed in the reactor that an electric stirrer, thermometer, reflux condenser, reflux water separator are housed, and heating and stirring are heated up to At 160°C, purging with nitrogen gas carried out the water generated by the reaction and condensed it into the water separator. After 8 hours of reaction, 25.9 g of water was separated, and 626.7 g of the reaction product was collected. The analysis results are shown in Table 3;

[0065] (2) Molecular distillation

[0066] 300 g of the reaction product from the previous step was subjected to primary molecular distillation (temperature 146° C., absolute pressure 2.0 Pa) with a VKL70-5FDRR full-heating full-gear pump molecular distillation device from VTA, Germany. The heavy component from the primary molecular distillation was subjected to secondary molecular distillation (temperature...

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Abstract

Relating to the fuel field, the invention discloses a composition with diesel oil wear resistance, a diesel oil composition and preparation methods thereof. The composition contains: 90wt% or more than 90wt% of C12-25 unsaturated fatty acid glyceride in terms of unsaturated fatty acid residue and 2.5wt% or less than 2.5wt% of saturated fatty acid glyceride in terms of saturated fatty acid residue,the content of fatty acid monoglyceride in the composition is 40% or more, and the acid value of the composition is less than or equal to 1mg KOH / g. The preparation method of the composition disclosed by the invention includes: subjecting the raw materials and glycerin to esterification; and conducting molecular distillation on the esterification product. The diesel oil composition disclosed by the invention contains the composition and the base diesel oil. The preparation method of the diesel oil composition disclosed by the invention includes mixing the composition or the prepared composition with base diesel oil. According to the invention, an ester type antiwear agent meeting the purchasing standard of Sinopec Group can be obtained, and can significantly improve the lubricity of low-sulfur diesel oil.

Description

technical field [0001] The invention relates to the field of fuels, in particular to a composition with diesel anti-wear properties, a diesel composition and a preparation method thereof. Background technique [0002] With the increasing attention to environmental issues around the world, the production of high-quality clean energy has become the development direction of the modern oil refining industry, and the production standards of diesel oil have gradually increased. This clean diesel has the characteristics of low aromatic content, high cetane number, light distillate, low sulfur and low nitrogen. Sulfur is the most harmful element that increases the content of pollutants in the atmosphere, so it is necessary to strictly control the content of sulfur compounds in diesel. The clean diesel currently produced is mainly produced by hydrogenation process. This method not only removes sulfur compounds in diesel, but also reduces the content of nitrogen-containing compounds ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/04C10L1/10C10L1/188C10L1/19C11C3/02
CPCC10G2300/30C10G2400/04C10G2400/10C10L1/04C10L1/10C10L1/1881C10L1/19C11C3/02Y02E50/10
Inventor 蔺建民刘金胜李宝石黄燕民
Owner CHINA PETROLEUM & CHEM CORP
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