Fuel additive, preparation method thereof and fuel composition

A fuel additive and additive technology, which is applied to fuel additives, fuels, liquid carbon-containing fuels, etc., can solve the problems of difficult control of experimental parameters, complex composition of anti-wear agents, and general anti-wear properties, and achieves simple preparation process and production cost. Low cost and good compatibility

Pending Publication Date: 2021-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis process is complicated and the experimental parameters are difficult to control
[0011] Patent CN103289763A discloses a low-sulfur diesel antiwear agent, which is composed of triethanolamine, toluene, ricinoleic acid, glycerol, polyethylene glycol and antioxidant, but the composition of the antiwear agent is relatively complicated, and its antiwear performance is general

Method used

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  • Fuel additive, preparation method thereof and fuel composition
  • Fuel additive, preparation method thereof and fuel composition
  • Fuel additive, preparation method thereof and fuel composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 500g methyl ricinoleate (mass fraction is 75%, Shanghai Aladdin Biochemical Technology Co., Ltd.) and 128.5g succinic anhydride (succinic anhydride, mass fraction is 99%, Shanghai Aladdin Biochemical Technology Co., Ltd.) In a 1000mL reactor equipped with an electric stirrer, a thermometer, a reflux condenser and a nitrogen inlet tube (the molar ratio of ricinoleic acid methyl ester to succinic anhydride is about 1:0.8). Introduce nitrogen, slowly heat to 80°C while stirring, and reflux for 4 hours.

[0078] As shown in Reaction Formula 1.

[0079]

[0080] The obtained succinate-based ricinoleic acid methyl ester was 624.1 g, and the yield was about 71.3%.

Embodiment 2

[0082] 500g methyl ricinoleate (mass fraction is 75%, Shanghai Aladdin Biochemical Technology Co., Ltd.) and 245.7g succinic acid (massfraction is 99.5%, Shanghai Aladdin Biochemical Technology Co., Ltd.) Stirrer, thermometer, reflux condenser and nitrogen inlet tube in the 1000mL reactor (the molar ratio of ricinoleic acid methyl ester to succinic acid is about 1:1.3). Introduce nitrogen gas, slowly heat to 120°C while stirring, and reflux for 10 hours. Excess succinic acid was removed by distillation under reduced pressure to obtain 739.9 g of succinate-based ricinoleic acid methyl ester, with a yield of about 76.7%.

Embodiment 3

[0084] Castor oil biodiesel was obtained according to the preparation method of castor oil biodiesel provided in Example 1 of patent CN101974372A. 1000g castor oil biodiesel (castor oil biodiesel fatty acid ester composition is shown in Table 2) and 801.5g succinic anhydride (succinic anhydride, mass fraction is 99%, Shanghai Aladdin Biochemical Technology Co., Ltd.) In a 3000mL reactor with an electric stirrer, a thermometer, a reflux condenser and a nitrogen inlet pipe, the molar ratio of castor oil biodiesel (the molecular weight is considered to be the same as that of ricinoleic acid methyl ester, based on 312.5g / mol) to succinic anhydride is about 1:2.5, feed nitrogen, heat and stir to raise the temperature to 100°C, reflux for 8 hours, remove excess succinic anhydride by distillation under reduced pressure, and obtain about 1706.1 g of the product, with a yield of about 92.8%.

[0085] Table 2 Castor oil biodiesel fatty acid ester composition

[0086] Fatty ac...

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Abstract

The invention relates to a fuel additive which at least contains a compound as shown in a structural formula I; in the structural formula I, R1 can be hydrogen and alkyl containing or not containing double bonds, R2 is alkyl containing or not containing double bonds, the total carbon number of R1 and R2 is 1-30, R3 is hydrogen or alkyl of C1-C20, and R4 is alkyl of C1-C30 or does not exist. The additive disclosed by the invention is obtained by taking hydroxy fatty acid (ester) as a raw material and carrying out esterification reaction with dicarboxylic acid or anhydride thereof; the generated fuel additive has a surprising remarkable anti-wear effect.

Description

technical field [0001] The invention relates to the field of fuels, in particular to a fuel additive, a preparation method thereof and a fuel composition. Background technique [0002] With the continuous upgrading of oil quality, the problem of poor lubricity of low-sulfur diesel oil is becoming more and more prominent. Effective anti-wear components such as reactive compounds and acidic substances are removed, resulting in poor lubricity of diesel oil. Then came the problems of underpowered engines, poor fuel atomization, excessive wear on precision parts and failed fuel pumps. [0003] Adding anti-wear additives to low-sulfur diesel is a widely used method to improve the lubricity of diesel. Currently used diesel lubricity additives are mainly some polar compounds, such as alcohols, ethers, fatty acids and their esters, and amine compounds. These compounds are usually oily agents with polar groups such as hydroxyl, carboxyl or ester groups. Under boundary lubrication c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/188C10L10/08
CPCC10L1/188C10L10/08Y02E50/10
Inventor 夏鑫蔺建民李宝石李妍
Owner CHINA PETROLEUM & CHEM CORP
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