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Demulsifier composition, lubricating oil composition and method for improving demulsification performance of lubricating oil

A technology of demulsifier and composition, which is applied in the field of demulsifier composition, can solve the problems of adding more, not easy to guarantee the quality of lubricating oil, and the increase of lubricating oil production cost, and achieve the effect of good stability and excellent oil-water separation effect

Active Publication Date: 2018-06-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the demulsifier introduced in the above patent can be used for demulsification of lubricating oil, there is still the problem that the demulsification effect is sometimes not good, and more demulsifiers need to be added
In addition, some demulsifiers, especially polyether demulsifiers, are easy to separate from the oil phase due to their hydrophilic groups, which not only increases the production cost of lubricating oil, but also makes it difficult to ensure the quality of lubricating oil.
Therefore, the existing demulsifiers for lubricating oils still have limitations and need to be further improved

Method used

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  • Demulsifier composition, lubricating oil composition and method for improving demulsification performance of lubricating oil
  • Demulsifier composition, lubricating oil composition and method for improving demulsification performance of lubricating oil
  • Demulsifier composition, lubricating oil composition and method for improving demulsification performance of lubricating oil

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Effect test

Embodiment 1

[0064] The preparation of embodiment 1 propylene sulfonic acid mixture

[0065] Add 80 grams of petroleum ether at 30°C to 60°C in a 500mL autoclave with stirring, heating, and cooling bath, then close the reaction kettle, turn on the stirring, and pass it into a cooling bath for temperature control, and then use a high-pressure pump to inject 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 cylinder with sulfur trioxide, and place it in an electronic Measure on the 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, and pass the gas into the vent pipe of the autoclave, and then into the liquid phase of the autoclave for Sulfonation reaction, the amount of sulfur trioxide feed is 77.7 grams (0.97...

Embodiment 2

[0066] The preparation of embodiment 2 butylene sulfonic acid mixture

[0067] Add 70 grams of normal hexane in a 500mL autoclave with stirring, heating and cooling bath, then close the reactor, open the stirring, and pass into the cooling bath for temperature control, then use a high-pressure pump to pour 38 grams of butene ( 0.679mol), 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 place it on an electronic scale for measurement. 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, and the gas is passed into the vent pipe of the autoclave, and then passed into the liquid phase of the autoclave to carry out the sulfonation reaction. Sulfur trioxide feed rate is 54.88 grams (0.686mol), at this mome...

Embodiment 3

[0068] The synthesis of embodiment 3 four (4-hydroxyphenyl) porphyrins

[0069] Add 10 grams of p-hydroxybenzaldehyde (M=122.12, 0.0819 mol), 160 ml of propionic acid and 10 ml of dimethyl sulfoxide mixed solvent into a three-necked flask with reflux, stirring, and temperature control devices, and heat up to 125-130 ° C for reflux , then drop 5.5 grams of pyrrole (M=67.09, 0.0819mol), the reflux reaction time is 140 minutes, then import the material into a beaker, put it into a refrigerator and cool it to 2-4°C, and filter it after standing for 10 hours to obtain blue crystals, Then the crystals were washed with propionic acid, recrystallized with absolute ethanol, and separated through a 100-mesh silica gel column to obtain a blue-purple segment. The solvent was evaporated and crystallized with absolute ethanol to obtain tetrakis (4-hydroxyphenyl) porphyrin 4.5 gram.

[0070] Structural characterization of the product: It can be seen from its ultraviolet spectrum that there ...

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Abstract

The invention provides a demulsifier composition, a lubricating oil composition containing the demulsifier composition and a method for improving the demulsification performance of lubricating oil. The demulsifier composition of the present invention comprises: 1) the copolymer of alkyl acrylate and α-alkenyl sulfonic acid; 2) the polymerization of tetrakis (4-hydroxyphenyl) porphyrin and propylene oxide, ethylene oxide Reaction product; the mass ratio between the two is 1~10:10~1. The demulsifier composition of the present invention has good stability in lubricating oil, has excellent oil-water separation effect and demulsification effect, is especially suitable for the separation of trace water in lubricating oil, and is especially suitable for industrial gear oil, steam turbine oil, and marine crankcase Oil.

Description

technical field [0001] The invention relates to a demulsifier composition, in particular to a demulsifier composition suitable for internal combustion engine oil and industrial lubricating oil. Background technique [0002] Internal combustion engine oil and industrial lubricating oil often encounter occasions where water exists during use. These lubricating oils are easy to form a water-in-oil emulsification system with water, especially when they contain surface-active additives, the emulsification of the lubricating oil is more difficult. serious. If the oil-water separation cannot be realized in time, the lubricating condition of the lubricating oil will be changed. In the light case, it will affect the formation of the oil film and reduce the lubricating ability. In the severe case, it will cause mechanical corrosion and wear, and even damage the equipment, affecting production and safety. Therefore, the demulsification of lubricating oil is an important physical and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M157/06C10M169/04
Inventor 刘依农段庆华李玲
Owner CHINA PETROLEUM & CHEM CORP
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