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Lubricating oil composition and method for improving its comprehensive performance

A lubricating oil composition and composition technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of water separation and demulsification performance that cannot meet the requirements, etc.

Active Publication Date: 2018-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the increase of engine power and the extension of oil change intervals, the performance of the original oil products is required to be further improved, and the requirements for water separation and demulsification performance are also getting higher and higher, while the existing formula The water separation and demulsification properties in the medium sometimes cannot meet the requirements, therefore, further improvement is required

Method used

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  • Lubricating oil composition and method for improving its comprehensive performance
  • Lubricating oil composition and method for improving its comprehensive performance
  • Lubricating oil composition and method for improving its comprehensive performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 10

[0072] The preparation of embodiment 1 octadecylthiophosphonic anhydride H-1

[0073]In a 500mL three-neck flask equipped with a motor stirrer and reflux water separation and condensation facilities, add 100 grams of C18α-olefins (0.4mol), 100 grams of HVI150 neutral oil, 50 grams of phosphorus pentasulfide (0.23mol), and then add 0.75 grams of sulfur , control the reaction temperature to 150°C, at this time, hydrogen sulfide gas is released, absorb hydrogen sulfide gas with 20% sodium hydroxide solution, react at this temperature for 5 hours, stop the reaction, lower the temperature, and filter out the unreacted phosphorus pentasulfide residue , Obtain 236 grams of oily liquid, i.e. octadecylthiophosphonic anhydride H-1, S content 9.3%, P content 3.8%.

Embodiment 2 20

[0074] The preparation of embodiment 2 tetracosyl thiophosphonic anhydride H-2

[0075] In a 500mL three-necked flask equipped with a motor stirrer and reflux water separation and condensation facilities, add 100 grams of C24α-olefins (0.3mol), 80 grams of HVI150 neutral oil, 36 grams of phosphorus pentasulfide (0.16mol), and then add 0.6 grams of nonyl Base phenol, control the reaction temperature to 180°C, at this time, hydrogen sulfide gas is released, absorb hydrogen sulfide gas with 20% sodium hydroxide solution, control the reaction at this temperature for 6 hours, stop the reaction, cool down, and filter to separate the unreacted Phosphorus pentasulfide residue was obtained to obtain 201 g of oily liquid, i.e. tetracosylthiophosphonic anhydride H-2, with an S content of 7.7% and a P content of 2.9%.

Embodiment 3

[0076] The preparation of embodiment 3 propylene sulfonic acid mixtures

[0077] Add 80 grams of petroleum ether at 30°C to 60°C in a 500mL corrosion-resistant autoclave with stirring, heating, and cooling bath, then close the reactor, turn on the stirring, and pass it into a cooling bath for temperature control, and then use a high-pressure pump to Put in 40 grams (0.952mol) of propylene, and feed high-purity nitrogen, control the pressure of the reactor between 0.8~1MPa, control the temperature of the reactor at 0~10°C, heat the steel cylinder storing sulfur trioxide, and Measure on the electronic scale, then control the heating temperature so that the pressure of the sulfur trioxide cylinder is greater than the pressure of the autoclave, and open the outlet valve of the sulfur trioxide cylinder to pass the gas into the vent pipe of the autoclave, and then into the liquid phase of the autoclave Carry out sulfonation reaction, sulfur trioxide feed rate is 77.7 grams (0.971mol...

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Abstract

The invention provides a lubricating oil composition and a method for improving the comprehensive performance of the lubricating oil. The lubricating oil composition of the present invention comprises: alkyl thiophosphonic anhydride, demulsifier, detergent, antioxidant, dispersant and a major amount of lubricating base oil. The lubricating oil composition of the invention has excellent high-temperature detergency, oxidation stability, anti-wear and anti-friction properties, especially excellent high-temperature detergency and anti-emulsification properties, rapid and thorough water separation, and is suitable for the lubrication of marine diesel engines. It is especially suitable for crankcase lubrication of two-stroke low-speed crosshead marine diesel engines and lubrication of medium-speed piston diesel engines.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition suitable for marine diesel engines. Background technique [0002] With the development of my country's economy and the rapid development of the marine transportation industry, the demand for marine oil for large ships continues to increase, and the quality of oil products continues to improve. These oil products mainly include two-stroke low-speed crosshead cylinder oil, system oil and four-stroke medium-speed cylindrical piston diesel engine oil. Among them, although the working conditions of system oil and four-stroke medium-speed tubular piston diesel engine oil are not as harsh as those of marine cylinder oil, they still involve the operation where the fuel is diesel with high sulfur content and water exists. Therefore, oil products have certain requirements for the base value, generally the system oil is required to be within the range of 6-10mg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00C10M169/04C10N40/25C10N30/06
Inventor 刘依农段庆华张耀
Owner CHINA PETROLEUM & CHEM CORP
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