CN102911780A - Treating method for lubrication oleic acid values - Google Patents
Treating method for lubrication oleic acid values Download PDFInfo
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- CN102911780A CN102911780A CN2012104185262A CN201210418526A CN102911780A CN 102911780 A CN102911780 A CN 102911780A CN 2012104185262 A CN2012104185262 A CN 2012104185262A CN 201210418526 A CN201210418526 A CN 201210418526A CN 102911780 A CN102911780 A CN 102911780A
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Abstract
The invention provides a treating method for lubrication oleic acid values. The treating method includes the step of reacting 80-99.99% by weight of sample lubricating oil with 0.1-20% by weight of acid value treating agent to obtain lubricating oil with an acid value lower than 0.03mgKOH/g. The sample lubricating oil is the lubricating oil containing additive or base lubricating oil. The acid value treating agent is epoxide or organic amine compound. The acid value treating agent and organic acid in the sample lubricating oil undergo ring-opening reaction to form ester, organic amine and the organic acid undergo neutral reaction to form amine salt or undergo addition reaction to form derivative of urea, thereby the organic acid is consumed, and the purpose for lowering the acid value is reached. By the treating method, not only the acid value in the sample lubricating oil can be lowered, also oil loss is less. In addition, the adopted acid value treating agent is non-corrosive, easy to filter and pollution-free.
Description
Technical field
The present invention relates to the lubricating oil process field, relate in particular to a kind for the treatment of process of acid value of lubricating oil.
Background technology
Lubricating oil is a kind of not volatile oily lubricant, generally be the product of fractionation oil, also has to refine from vegetable and animals oils.Lubricating oil can be divided into animal and vegetable oil by its source, petroleum oil and ucon oil three major types.The consumption of petroleum oil accounts for total consumption more than 97%, so lubricating oil often refers to petroleum oil.Lubricating oil is comprised of base oil and additive two portions, and base oil is lubricated main body of oil, is determining the basic character of lubricating oil, and additive can remedy and improve the deficiency of base oil aspect of performance, is the important component part of lubricating oil.Lubricating oil is mainly used in reducing the friction between the moving parts surface, simultaneously to machinery equipment have cooling, sealing, anticorrosion, antirust, insulation, power transmits, cleans the effects such as impurity.Its mainly take from the lubricating oil distillate of crude unit and residue oil fraction as raw material.
The acid number of lubricating oil is the quality index of organic acid total content in the expression lubricating oil.In and the required potassium hydroxide milligram number of 1g petroleum products be called acid number.The size of acid value of lubricating oil has a significant impact the use of lubricating oil.Acid value of lubricating oil is large, and the organic acid content of expression lubricating oil is high, might cause corrosion to mechanical component, and when especially having water to exist, this corrosive nature may be more obvious.Lubricating oil is oxidized rotten in storage and use procedure in addition, and acid number also increases gradually, and the size that acid number commonly used changes is weighed the oxidation of lubricating oil stability, or as criteria for changing oil.
When acid value of lubricating oil is higher when need reducing acid number, the general way that adds solid alkali that adopts is carried out neutralization reaction, solids removed by filtration alkali then, thus reduce lubricating oil organic acid content, reduce the acid number of lubricating oil.But adding of solid alkali joined and lubricating oil generation side reaction, and the oil product loss is larger, and filtration procedure is complicated.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind for the treatment of process of acid value of lubricating oil, can effectively reduce acid value of lubricating oil, and the oil product loss is little.
The invention discloses a kind for the treatment of process of acid value of lubricating oil, comprising:
Sample lubricating oil and acid number treatment agent are reacted, obtain finished lube;
Described acid number treatment agent is epoxide or organic amine compound;
The weight percent of described sample lubricating oil and acid number treatment agent is (80 ~ 99.9%): (0.1 ~ 20%).
Preferably, described epoxide is 2,3-R-GLYCIDOL, 2,3-R-GLYCIDOL, cyclohexanediol glycidyl ether, α-glycidyl allyl ether, β-chloroethyl glycidyl ether, phenyl glycidyl ether, a toluene glycidyl ether, benzyl glycidyl ether, diphenolic propane diglycidol ether, 1,1 of 2-cylohexanediol diglycidyl ether, glycidyl allyl ether, ethylene glycol diglycidylether, butanediol diglycidyl ether, glycidyl ester, C 12～14 alkyl glycidyl ethers or C4～30, one or more in the 2-long-chain oxirane.
Preferably, described organic amine compound is one or more in the carbodiimide.
Preferably, described organic amine compound is N, N-DIC or N, N'-dicyclohexylcarbodiimide.
Preferably, described sample lubricating oil is pentaerythritol fatty ester, poly-alkylene ethylene glycol oil or naphthene base crude oil.
Preferably, the described reaction times is 0.5～10 hour.
Preferably, described temperature of reaction is 60～150 ℃.
Preferably, the vacuum tightness of described reaction is 0.030～0.098MPa.
Preferably, the weight percent of described sample lubricating oil and acid number treatment agent is (85 ~ 95%): (5 ~ 15%).
Compared with prior art, the present invention reacts sample lubricating oil and acid number treatment agent, obtains finished lube.Described acid number treatment agent is epoxide or organic amine compound, epoxide can with sample lubricating oil in organic acid generation ring-opening reaction form ester, organic amine then forms the derivative of amine salt or addition reaction formation urea with organic acid generation neutralization reaction, thereby consume organic acid, reach the purpose that reduces acid number.The products that these reactions generate still can be used as the part of lubricant base or additive, so the present invention not only reduced the acid number of sample lubricating oil, and the oil product loss is little.In addition, the acid number treatment agent non-corrosiveness that the present invention adopts is easy to remove after filtration, can be to environment.Experiment shows, the acid number of the lubricating oil after the present invention processes is 0.01 ~ 0.03mgKOH/g.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just as further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
The embodiment of the invention discloses a kind for the treatment of process of acid value of lubricating oil, comprising:
Sample lubricating oil and the acid number treatment agent of acid number greater than 0.2mgKOH/g reacted, obtain acid number less than the lubricating oil of 0.03mgKOH/g;
Described sample lubricating oil is lubricating oil or the lubricant base that contains additive;
Described acid number treatment agent is epoxide or organic amine compound;
The weight percent of described sample lubricating oil and acid number treatment agent is (80 ~ 99.9%): (0.1 ~ 20%).
According to the present invention, the present invention does not all have particular restriction to kind and the source of described sample lubricating oil.Sample lubricating oil can be to carry out the base oil that acid number is processed, and also can be to carry out the later lubricating oil of adding additive that acid number is processed.This treating processes can be a process of a certain class lubricating oil of preparation, also can be the existing higher lubricating oil of acid number is processed.Described sample lubricating oil is pentaerythritol fatty ester, poly-alkylene ethylene glycol oil or naphthene base crude oil.Described acid number treatment agent is epoxide or organic amine compound.Described epoxide is preferably 2,3-R-GLYCIDOL, 2,3-R-GLYCIDOL, cyclohexanediol glycidyl ether, α-glycidyl allyl ether, β-chloroethyl glycidyl ether, phenyl glycidyl ether, a toluene glycidyl ether, benzyl glycidyl ether, diphenolic propane diglycidol ether, 1,1 of 2-cylohexanediol diglycidyl ether, glycidyl allyl ether, ethylene glycol diglycidylether, butanediol diglycidyl ether, glycidyl ester, C 12～14 alkyl glycidyl ethers or C4～30, one or more in the 2-long-chain oxirane.Described organic amine compound is preferably one or more in the carbodiimide, N more preferably, N-DIC or N, N'-dicyclohexylcarbodiimide.
According to the present invention, described sample lubricating oil and acid number treatment agent react.The weight percent of described sample lubricating oil and acid number treatment agent is (80 ~ 99.9%): (0.1 ~ 20%) is preferably (85 ~ 95%): (5 ~ 15%).The described reaction times is preferably 0.5～10 hour, more preferably 1～8 hour.Described temperature of reaction is preferably 60～150 ℃, more preferably 90～120 ℃.The vacuum tightness of described reaction is preferably 0.030～0.098MPa, more preferably 0.050～0.088MPa.After described sample lubricating oil and the reaction of acid number treatment agent, preferably reacted mixed solution is carried out aftertreatment, obtain finished lube.Described aftertreatment is preferably lowers the temperature reacted mixed solution, then filters.The preferred temperature of described cooling is down to below 60 ℃.The present invention does not have particular restriction to described filtration, adopts industrial filter paper to get final product according to mode well known to those skilled in the art.
The lubricating oil that the present invention is obtained carries out determination of acid value, and the result shows, the acid number of the lubricating oil that obtains according to acid number treatment process of the present invention is 0.01 ~ 0.03mgKOH/g.
With the present invention sample lubricating oil and acid number treatment agent are reacted, obtain finished lube.Described acid number treatment agent is epoxide or organic amine compound, epoxide can with sample lubricating oil in organic acid generation ring-opening reaction form ester, organic amine then forms the derivative of amine salt or addition reaction formation urea with organic acid generation neutralization reaction, thereby consume organic acid, reach the purpose that reduces acid number.The products that these reactions generate still can be used as the part of lubricant base or additive, so the present invention not only reduced the acid number of sample lubricating oil, and the oil product loss is little.In addition, the acid number treatment agent non-corrosiveness that the present invention adopts is easy to remove after filtration, can be to environment.Experiment shows, the acid number of the lubricating oil after the present invention processes is 0.01 ~ 0.03mgKOH/g.
In order further to understand the present invention, below in conjunction with embodiment the treatment process of acid value of lubricating oil provided by the invention is described, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Be 0.28mgKOH/g and 40 ℃ of pentaerythritol fatty ester and 5 kilograms of N that kinematic viscosity is 32.9mm2/s with 95 kilograms of acid numbers, the N-DIC is by 200 liters of chuck vacuum of vacuum pump suction still, start stirrer, the open cold condenser, start vacuum pump, keep vacuum tightness at 0.085MPa, be warmed up to 110 ± 10 ℃, constant temperature 1 hour.Be cooled to below 60 ℃, filter, obtain finished lube.The finished lube that obtains is taken a sample, and the mensuration acid number is 0.01mgKOH/g.Kinematic viscosity to the finished lube that obtains is measured, and its 40 ℃ of kinematic viscosity are 32mm
2/ s.
Embodiment 2
Restraining acid numbers with 900 is that 0.52mgKOH/g and 40 ℃ of kinematic viscosity are 68.8mm
2The poly-alkylene ethylene glycol oil of/s and 100 gram neopentylglycol diglycidyl ethers start stirrer by 2 liters of there-necked flasks of vacuum pump suction, open water of condensation, start vacuum pump, keep vacuum tightness at 0.085MPa, are warmed up to 125 ± 5 ℃, constant temperature 1 hour.Be cooled to below 60 ℃, filter, obtain finished lube.The finished lube that obtains is taken a sample, and the mensuration acid number is 0.03mgKOH/g.Kinematic viscosity to the finished lube that obtains is measured, and its 40 ℃ of kinematic viscosity are 68.5mm
2/ s.
Embodiment 3
Be that 0.36mgKOH/g and 40 ℃ of kinematic viscosity are 46.3mm with 85 kilograms of acid numbers
2/ s naphthene base crude oil and 15 kilogram 2,3-R-GLYCIDOL start stirrer by 200 liters of chuck vacuum of vacuum pump suction still, and the open cold condenser starts vacuum pump, keeps vacuum tightness at 0.082MPa, is warmed up to 100 ± 10 ℃, constant temperature 2 hours.Be cooled to below 60 ℃, filter, obtain finished lube.The finished lube that obtains is taken a sample, and the mensuration acid number is 0.03mgKOH/g.Kinematic viscosity to the finished lube that obtains is measured, and its 40 ℃ of kinematic viscosity are 46.2mm
2/ s.
Embodiment 4
Restraining acid numbers with 900 is that 0.25mgKOH/g and 40 ℃ of kinematic viscosity are 32.8mm
2The DRA cycloalkyl refrigerator oil of/s and 100 gram ethylene glycol diglycidylethers start stirrer by 2 liters of there-necked flasks of vacuum pump suction, open water of condensation, start vacuum pump, keep vacuum tightness at 0.085MPa, are warmed up to 125 ± 5 ℃, constant temperature 3 hours.Be cooled to below 60 ℃, filter, obtain finished lube.The finished lube that obtains is taken a sample, and the mensuration acid number is 0.02mgKOH/g.Kinematic viscosity to the finished lube that obtains is measured, and its 40 ℃ of kinematic viscosity are 32.0mm
2/ s.
Embodiment 5
Be that 0.29mgKOH/g, base oil are that tetramethylolmethane carbon five, carbon eight mixed aliphatic esters, 40 ℃ of kinematic viscosity boards are that 32.8 synthetic refrigerator oil and 15 kilograms of butanediol diglycidyl ethers are by 200 liters of chuck vacuum of vacuum pump suction still with 85 kilograms of acid numbers, start stirrer, the open cold condenser, start vacuum pump, keep vacuum tightness at 0.087MPa, be warmed up to 120 ± 10 ℃, constant temperature 3 hours.Be cooled to below 70 ℃, filter, obtain finished lube.The finished lube that obtains is taken a sample, and the mensuration acid number is 0.01mgKOH/g.Kinematic viscosity to the finished lube that obtains is measured, and its 40 ℃ of kinematic viscosity are 31.9mm
2/ s.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the treatment process of an acid value of lubricating oil comprises:
Sample lubricating oil and acid number treatment agent are reacted, obtain acid number less than the lubricating oil of 0.03mgKOH/g;
Described sample lubricating oil is lubricating oil or the lubricant base that contains additive;
Described acid number treatment agent is epoxide or organic amine compound;
The weight percent of described sample lubricating oil and acid number treatment agent is (80 ~ 99.9%): (0.1 ~ 20%).
2. the treatment process of acid value of lubricating oil according to claim 1, it is characterized in that, described epoxide is 2, the 3-R-GLYCIDOL, 2, the 3-R-GLYCIDOL, the cyclohexanediol glycidyl ether, α-glycidyl allyl ether, β-chloroethyl glycidyl ether, phenyl glycidyl ether, between the toluene glycidyl ether, benzyl glycidyl ether, diphenolic propane diglycidol ether, 1, the 2-cylohexanediol diglycidyl ether, glycidyl allyl ether, ethylene glycol diglycidylether, butanediol diglycidyl ether, glycidyl ester, 1 of C12～14 alkyl glycidyl ethers or C4～30, one or more in the 2-long-chain oxirane.
3. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, described organic amine compound is one or more in the carbodiimide.
4. the treatment process of acid value of lubricating oil according to claim 3 is characterized in that, described organic amine compound is N, N-DIC or N, N'-dicyclohexylcarbodiimide.
5. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, described sample lubricating oil is pentaerythritol fatty ester, poly-alkylene ethylene glycol oil or naphthene base crude oil.
6. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, the described reaction times is 0.5～10 hour.
7. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, described temperature of reaction is 60～150 ℃.
8. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, the vacuum tightness of described reaction is 0.030～0.098MPa.
9. the treatment process of acid value of lubricating oil according to claim 1 is characterized in that, the weight percent of described sample lubricating oil and acid number treatment agent is (85 ~ 95%): (5 ~ 15%).
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| CN201210418526.2A CN102911780B (en) | 2012-10-26 | 2012-10-26 | Treating method for lubrication oleic acid values |
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| CN201210418526.2A CN102911780B (en) | 2012-10-26 | 2012-10-26 | Treating method for lubrication oleic acid values |
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| CN102911780B CN102911780B (en) | 2015-04-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108676603A (en) * | 2018-06-27 | 2018-10-19 | 中国石油化工股份有限公司 | The fine purification treatment process and refined high viscosity esters base oil of a kind of high viscosity esters base oil |
| CN109536266A (en) * | 2017-09-21 | 2019-03-29 | 中国石油化工股份有限公司 | A kind of processing method reducing acid value of lubricating oil |
| CN110117337A (en) * | 2019-05-16 | 2019-08-13 | 江南大学 | A kind of preparation method of novel synthetic lubricant fluid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536266A (en) * | 2017-09-21 | 2019-03-29 | 中国石油化工股份有限公司 | A kind of processing method reducing acid value of lubricating oil |
| CN109536266B (en) * | 2017-09-21 | 2021-07-30 | 中国石油化工股份有限公司 | Treatment method for reducing acid value of lubricating oil |
| CN108676603A (en) * | 2018-06-27 | 2018-10-19 | 中国石油化工股份有限公司 | The fine purification treatment process and refined high viscosity esters base oil of a kind of high viscosity esters base oil |
| CN110117337A (en) * | 2019-05-16 | 2019-08-13 | 江南大学 | A kind of preparation method of novel synthetic lubricant fluid |
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