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Demulsifier composition and lubricating oil composition

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

Active Publication Date: 2018-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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 and lubricating oil composition
  • Demulsifier composition and lubricating oil composition
  • Demulsifier composition and lubricating oil composition

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Experimental program
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Effect test

Embodiment 1

[0055] The preparation of embodiment 1 propylene sulfonic acid mixture

[0056] 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 Add 40 grams (0.952 mol) of propylene, and feed high-purity nitrogen, control the pressure of the reactor between 0.8 and 1 MPa, control the temperature of the reactor at 0 to 10°C, heat the cylinder containing sulfur trioxide, and place Measure on an electronic scale, and 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 then pass the gas into the vent pipe of the autoclave, and then into the liquid phase of the autoclave Carry out the sulfonation reaction in the middle, the amount of...

Embodiment 2

[0057] The preparation of embodiment 2 butylene sulfonic acid mixture

[0058] 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

[0059] The synthesis of embodiment 3 sulfurized alkylphenol A

[0060] Add 100g (0.455mol) of nonylphenol, 100mL of n-decane, and 35g (1.09mol) of sulfur into a 500ml three-neck flask with temperature control, water cooling and stirring, then gradually raise the temperature to 160°C, and protect the reaction with nitrogen Material, feed reaction tail gas into 10% sodium hydroxide solution at the same time, to absorb the hydrogen sulfide gas that reaction generates, at this moment nonylphenol gradually becomes dark brown by colorless, finally becomes black liquid, after reacting for 4 hours, reducing Pressure distillation, the temperature is controlled at 165 ° C, and the sulfurized alkylphenol A is obtained after the solvent is evaporated, and the measured sulfur content is 23.9%. Measured by VPO method, the average molecular weight of sulfurized nonylphenol A is 881 (equivalent to containing 3 alkylphenols per molecule, k is 1, and the average value of the number of sulfur at...

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Abstract

The invention provides a demulsifier composition and a lubricating oil composition containing the demulsifier composition. The demulsifier composition provided by the invention comprises: 1) a copolymer of alkyl acrylate and alpha-olefin sulfonate; 2) a copolymer of alkylphenol sulfide, propylene oxide and ethylene oxide, wherein the mass ratio of the two copolymers is (1-10):(10-1). The demulsifier composition of the invention has a high stability in lubricating oils, has an excellent oil-water separation effect and demulsifyingeffect, is especially suitable for separating trace water from the lubricating oils, and can be used for industrial gear oil, 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 lubricating oil. Background technique [0002] Turbine oil, industrial gear oil, marine system lubricating oil, etc. 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 lubricating oil is more serious. If the oil-water separation cannot be realized in time, the lubricating condition of the lubricating oil will be deteriorated. 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 demulsibility of lubricating oil is an important physical and chemical index. [0003] Lubricating oil demulsifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M151/00C08F220/18C08F228/02C08G65/28C10N30/00C10N40/04
Inventor 刘依农段庆华李玲张耀
Owner CHINA PETROLEUM & CHEM CORP
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