Oxidation inhibitors for alcohol fuel engine lubricating oil and preparation method thereof

An oxidation inhibitor and engine technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve problems such as the influence of oxidative decay of engine lubricating oil, and achieve the effects of inhibiting carbon deposition, easy to use, and improving combustion conditions

Inactive Publication Date: 2014-07-02
HARBIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of the impact of alcohol ether fuels on the oxidative decay of engine lubricating oils, and provides a composite additive that can effectively inhibit its oxidative decay

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] 1. First install and debug equipment, mainly including raw material storage tanks, finished product storage tanks, blending kettles, heating equipment and laboratory equipment;

[0022] 2. Carry out laboratory tests on relevant indicators of raw materials, and feed materials only after passing the test;

[0023] 3. Heat 5% diluent oil to 55-65°C, then add 27% modified low-basic calcium petroleum sulfonate, and stir at constant temperature for no less than 30 minutes;

[0024] 4. Then add 25% of 2,5-mercaptothiadiazole and 30% of amino borate in sequence, and stir at a constant temperature of 55-65°C for not less than 30 minutes;

[0025] 5. Finally, add 13% N-phenyl-alpha amine and stir at a constant temperature of 55-65°C for 20 minutes, then the finished product will be finished, and the finished product will be ready after passing the inspection.

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PUM

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Abstract

The invention discloses oxidation inhibitors of different proportions for alcohol fuel engine lubricating oil and a preparation method thereof. The oxidation inhibitors are a group of composite additives composed of 5 to 45% of N-phenyl-alpha-naphthylamine, 3 to 35% of 2,5-mercaptothiadiazole, 10 to 60% of aminoborate, 15 to 40% of modified low-base number petroleum calcium sulfonate and 5 to 10% of dilution oil. The preparation method comprises the following steps: heating dilution oil to 55 to 65 DEG C; then successively adding N-phenyl-alpha-naphthylamine, 2,5-mercaptothiadiazole, aminoborate and modified low-base number petroleum calcium sulfonate; and carrying out stirring at a constant temperature of 45 to 50 DEG C for no less than 45 min so as to obtain the oxidation inhibitors. 3.5 to 5% of the oxidation inhibitors are added into in-use internal combustion engine oil, so oxidation and decay of alcohol fuel engine lubricating oil can be effectively inhibited, the service life of engine lubricating oil is prolonged, and carbon formation in an engine is reduced. The oxidation inhibitors are convenient to use.

Description

technical field [0001] The invention relates to a fine chemical product, in particular to an oxidation inhibitor of alcohol fuel engine lubricating oil and a preparation method thereof. Background technique [0002] With the continuous progress of industrialization, the demand for energy is increasing day by day, and energy issues have become a major factor restricting economic development. Therefore, the research and use of alternative fuels that replace petroleum have developed rapidly. Alternative fuels include: methanol and ethanol are alternative fuels for gasoline; (for example: 10% ethanol gasoline is promoted in most areas of my country) dimethyl ether and monoester are alternative fuels for diesel; thus, alcohol ethers have become alternative fuels as alternative fuels. As the mainstream, alcohol ethers are used as alternative fuels. Although they have played a certain role in alleviating energy shortages, some technical problems in their promotion should attract suff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M163/00C10N40/25C10N30/10
Inventor 宋应金于宁金世会邱泽国郭运徐玲玲陈化飞
Owner HARBIN UNIV OF COMMERCE
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