A kind of modified vegetable oil fatty acid methyl ester and its preparation method and application

A technology of oil fatty acid methyl ester and fatty acid methyl ester, which is applied in the field of modified vegetable oil fatty acid methyl ester and its preparation, can solve the problems of diesel fuel bacteria breeding, engine failure, wear and tear of fuel injectors, etc., so as to broaden the source of raw materials and improve lubricity. , the effect of reducing the freezing point

Active Publication Date: 2022-04-08
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 modified vegetable oil fatty acid methyl ester and its preparation method and application
  • A kind of modified vegetable oil fatty acid methyl ester and its preparation method and application
  • A kind of modified vegetable oil fatty acid methyl ester and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027]Preparation of soybean oil fatty acid methyl ester: Add 800g soybean oil, 160g methanol, and 8g potassium hydroxide in a 2L high-pressure reactor, and carry out stirring reaction. The reaction temperature is 60°C, and the reaction time is 20min. Isolate 76g of the glycerin product in the lower layer, then wash the upper layer product 3 times with 50°C hot water, and distill the washed product for 2h at 2000Pa and 60°C to obtain fatty acid methyl ester of soybean oil with an iodine value of 125mgKOH / g. The point is -2.5°C.

[0028] Alumina-supported nickel metal catalyst: add 20g aluminum isopropoxide and 1.4g nickel nitrate hexahydrate into 100ml ethanol solvent under stirring conditions, stir for 24 hours, dry at 60°C, and heat up at a rate of 2°C / min to 600° C. and calcined for 10 hours to obtain an alumina-supported nickel catalyst.

[0029] 500g soybean oil fatty acid methyl ester, 143g 2-butenedialdehyde, and 50g catalyst were mixed, stirred and reacted at 140°C an...

Embodiment 2

[0031] The same method as in Example 1 was used to prepare soybean oil fatty acid methyl ester and catalyst.

[0032] Mix 500g soybean oil fatty acid methyl ester, 114g 2-butenedialdehyde, and 25g catalyst, stir and react at 150°C and 300r / min for 4h, and end the reaction. After the system was lowered to room temperature, the catalyst was recovered by filtration, and the pressure was 65 Pa, and 200° C. was distilled under reduced pressure for 2 hours to obtain the modified soybean oil fatty acid methyl ester. The conversion rate of soybean oil fatty acid methyl ester is 48.0%, the freezing point of the product is -24.6°C, and the water layer is not turbid in the demulsification test.

Embodiment 3

[0034] The same method as in Example 1 was used to prepare soybean oil fatty acid methyl ester and catalyst.

[0035] Mix 500g soybean oil fatty acid methyl ester, 171g 2-butenedialdehyde, and 100g catalyst, stir and react at 130°C and 300r / min for 6h, and end the reaction. After the system was lowered to room temperature, the catalyst was recovered by filtration, and the pressure was 65 Pa, and 200° C. was distilled under reduced pressure for 2 hours to obtain the modified soybean oil fatty acid methyl ester. The conversion rate of soybean oil fatty acid methyl ester is 54.9%, the freezing point of the product is -28.4°C, and the water layer is not turbid in the demulsification test.

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Abstract

The invention relates to a modified vegetable oil fatty acid methyl ester and a preparation method thereof. The vegetable oil fatty acid methyl ester, an unsaturated dialdehyde and a catalyst are mixed in proportion and reacted at 130-150° C.; the vegetable oil fatty acid methyl ester is non- Conjugated vegetable oil fatty acid methyl ester, the catalyst is an alumina-loaded active metal catalyst; after the reaction is completed, the modified vegetable oil fatty acid methyl ester is obtained through vacuum distillation. The modified vegetable oil fatty acid methyl ester prepared by the invention is used to improve the lubricity of low-sulfur diesel oil, and has the characteristics of good lubricity, good bacteriostasis, low freezing point, and low acid value, and can avoid diesel oil while improving lubricity. Long-term storage has the problem of breeding bacteria and clogging the filter.

Description

technical field [0001] The invention belongs to the technical field of biodiesel, and in particular relates to a modified vegetable oil fatty acid methyl ester and a preparation method and application thereof. Background technique [0002] With the widespread use of diesel engines, the consumption of diesel is increasing year by year. However, a large amount of diesel consumption will inevitably lead to further aggravation of vehicle emissions of harmful substances. Due to the serious impact of emissions on the ecological environment, human health and economic development, governments of various countries have successively formulated strict emission regulations to limit the harmful emissions of diesel vehicles. With the implementation of the National V standard for diesel in my country, the sulfur content of diesel will drop below 10ppm, and desulfurized diesel has been implemented in domestic refineries. At present, sulfur reduction technologies such as hydrotreating and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/19C10L1/04C10L10/08C10L10/14
CPCC10L1/19C10L1/04C10L10/08C10L10/14C10L2230/083C10L2270/026
Inventor 祁文博李澜鹏李秀峥曹长海王宜迪程瑾
Owner CHINA PETROLEUM & CHEM CORP
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