CN110699158A - Refrigerating machine oil, preparation method and application thereof - Google Patents
Refrigerating machine oil, preparation method and application thereof Download PDFInfo
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- CN110699158A CN110699158A CN201911000678.9A CN201911000678A CN110699158A CN 110699158 A CN110699158 A CN 110699158A CN 201911000678 A CN201911000678 A CN 201911000678A CN 110699158 A CN110699158 A CN 110699158A
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- alkylbenzene
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- refrigerator oil
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- branched chain
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
- C10M2203/065—Well-defined aromatic compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/285—Esters of aromatic polycarboxylic acids
- C10M2207/2855—Esters of aromatic polycarboxylic acids used as base material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention provides a refrigerator oil, comprising: 25-75 parts by weight of alkylbenzene containing branched chains; 25-75 parts by weight of diester; 0.2-2 parts by weight of an antioxidant; 0.01-0.5 parts by weight of a corrosion inhibitor; 0.5-2 parts of an extreme pressure antiwear agent; 0-0.05 part by weight of an antifoaming agent; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain. Compared with the prior art, the branched alkylbenzene and diester are used as base oil, and the antioxidant, the corrosion inhibitor, the extreme pressure antiwear agent and the antifoaming agent are added, so that the obtained refrigerator oil has low flocculation point with a refrigerant R22, excellent thermal stability and high-temperature oxidation resistance, and good low-temperature fluidity, can particularly meet the application in special industrial application fields requiring deep refrigeration, makes up the defect of refrigeration effect when mineral refrigerator oil is used at present in China, and has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of lubricating oil, and particularly relates to refrigerating machine oil, and a preparation method and application thereof.
Background
The refrigerating machine oil is a special lubricating oil for refrigerating type compression devices and is an important component for determining and influencing the refrigerating function and effect of a refrigerating system. In the working process of the refrigeration compressor, the refrigerant is decompressed and evaporated to obtain low temperature, and the refrigerating machine oil lubricates working parts of the refrigeration device. In recent years, refrigerators, freezers, air conditioners, and large refrigerators have been proposed. The technical development of refrigerated vehicles and other various refrigerating devices is gradually improved, and the energy conservation, the rotation, the small size and the light weight, the full sealing and the high efficiency become new characteristics of the refrigeration industry. These changes and developments have prompted the development of refrigerator oil development and production, as well as increased demands on the performance and quality of refrigerator oils.
The refrigerant is commonly called as "refrigerant" and is the working medium of the refrigerator. The refrigerant continuously circulates in the refrigerating system and exchanges energy with the outside world through the change of the thermodynamic state of the refrigerant, so that the aim of refrigeration is fulfilled. The solubility of various refrigerants to different types of lubricating oils varies, and the influence on the viscosity, the freezing point (pour point), and the like of the refrigerating machine oil varies in the refrigeration compressor, and the operating conditions of the refrigeration compressor vary depending on the refrigerant used at the same time, which are factors to be considered particularly when selecting the refrigerating machine oil.
Many refrigerants are commonly used, and they are classified into inorganic compound refrigerants, freon refrigerants, hydrocarbon refrigerants, and azeotropic solution (mixed refrigerant) refrigerants according to their material compositions. The traditional refrigerant is chlorofluorocarbon (CFC), but because chlorine has a destructive effect on the ozone layer, the non-concerned refrigerant HCFC replacing the CFC becomes the current main refrigerant for protecting the environment, wherein R22 is the most representative refrigerant.
However, the HCFC refrigerant is selective for refrigerating machine oil due to structural reasons, and although naphthenic oil produced in a special place has certain intersolubility with the refrigerant R22, the flocculation point is high, so that the refrigeration effect is poor, and the HCFC refrigerant has limitations on equipment requiring deep refrigeration.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a refrigerator oil, a preparation method and an application thereof, wherein the refrigerator oil has a low flocculation point with a refrigerant R22, and has good thermal stability, high temperature oxidation resistance and low temperature fluidity, and can particularly meet the use requirements of special industrial application fields requiring deep refrigeration.
The invention provides a refrigerator oil, comprising:
the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain.
Preferably, the branches of the branched alkylbenzene are methyl.
Preferably, the branched alkylbenzene has a kinematic viscosity of 45-95 mm at 40 DEG C2/s。
Preferably, the kinematic viscosity of the diester at 40 ℃ is 26-32 mm2/s。
Preferably, the antioxidant is selected from one or more of organic phenolic antioxidants, sulfur-nitrogen type compounds and composite phosphate compounds.
Preferably, the corrosion inhibitor is selected from one or more of sulfonate, fatty acid and derivative compound thereof and phosphate complex compound.
Preferably, the extreme pressure antiwear agent is selected from sulfur-phosphorus-nitrogen compound compounds and/or organic chloride; the anti-foaming agent is selected from silicon type anti-foaming agents and/or non-silicon type anti-foaming agents.
The invention also provides a preparation method of the refrigerator oil, which comprises the following steps:
mixing 25-75 parts by weight of alkylbenzene containing a branched chain and 25-75 parts by weight of diester, then sequentially adding 0.2-2 parts by weight of antioxidant, 0.01-0.5 part by weight of corrosion inhibitor, 0.5-2 parts by weight of extreme pressure antiwear agent and 0-0.05 part by weight of antifoaming agent, heating and uniformly stirring under a vacuum condition to obtain the refrigerator oil; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene and/or para-disubstituted alkylbenzene.
Preferably, the heating temperature is 50-70 ℃; the stirring vacuum degree is-0.092 MPa to-0.098 MPa.
The invention also provides application of the refrigerator oil in a refrigerating system with a hydrochlorofluorocarbon refrigerant.
The invention provides a refrigerator oil, comprising: 25-75 parts by weight of alkylbenzene containing branched chains; 25-75 parts by weight of diester; 0.2-2 parts by weight of an antioxidant; 0.01-0.5 parts by weight of a corrosion inhibitor; 0.5-2 parts of an extreme pressure antiwear agent; 0-0.05 part by weight of an antifoaming agent; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain. Compared with the prior art, the branched alkylbenzene and diester are used as base oil, and the antioxidant, the corrosion inhibitor, the extreme pressure antiwear agent and the antifoaming agent are added, so that the obtained refrigerator oil has low flocculation point with a refrigerant R22, excellent thermal stability and high-temperature oxidation resistance, and good low-temperature fluidity, can particularly meet the application in special industrial application fields requiring deep refrigeration, makes up the defect of refrigeration effect when mineral refrigerator oil is used at present in China, and has wide application prospect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a refrigerator oil, comprising:
the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain.
According to the invention, the content of the alkylbenzene containing the branched chain is preferably 26 to 74 parts by weight; the preferable kinematic viscosity of the alkylbenzene containing branched chains at 40 ℃ is 45-95 mm2(ii) s, more preferably 49 to 95mm2S; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain; the branched alkylbenzene preferably has C1-C2, more preferably methyl; the alkyl benzene containing branch contains branchThe number of carbon atoms of the alkyl group in the chain is preferably 3 to 8, more preferably 5 to 7, and still more preferably 7; in the present invention, the alkylbenzene containing a branched chain is most preferably trimethylbutylbenzene and/or dimethylbutylbenzene.
The content of the diester is preferably 26-74 parts by weight; the kinematic viscosity of the diester at 40 ℃ is preferably 26-32 mm2S; the diester is preferably one or more of diisodecyl phthalate, diisooctyl sebacate and diisooctyl azelate.
The content of the antioxidant is preferably 0.1-1 part by weight, more preferably 0.2-0.5 part by weight, and still more preferably 0.25 part by weight; the antioxidant is preferably one or more of an organic phenol antioxidant, a sulfur-nitrogen type compound and a composite phosphate compound, and more preferably one or more of N-phenyl-alpha-naphthylamine (T531), 2, 6-di-tert-butyl-p-methylphenol (T501), octyl liquid diphenylamine and butyl liquid diphenylamine.
The content of the corrosion inhibitor is preferably 0.01 to 0.5 part by weight, more preferably 0.01 to 0.3 part by weight, still more preferably 0.01 to 0.1 part by weight, and most preferably 0.01 part by weight; the corrosion inhibitor is preferably a triazole derivative, and more preferably one or more of a benzotriazole derivative, a thiadiazole derivative, benzotriazole, tolyltriazole sodium salt and carboxyl benzotriazole.
The content of the extreme pressure antiwear agent is preferably 1-2 parts by weight; the extreme pressure antiwear agent is preferably a sulfur-phosphorus-nitrogen compound and/or an organic chloride, and more preferably one or more of tricresyl phosphate (TCP), isooctyl acid phosphate amine salt, tributyl thiophosphate and thiophosphoric acid compound amine salt.
The content of the antifoaming agent is preferably 0.01-0.03 parts by weight; the anti-foaming agent is preferably a silicon type anti-foaming agent and/or a non-silicon type anti-foaming agent, and more preferably dimethyl siloxane, alkyl methyl alkenyl ester or other alkyl alkenyl ester.
The branched alkylbenzene and diester are used as base oil, and the antioxidant, the corrosion inhibitor, the extreme pressure antiwear agent and the antifoaming agent are added, so that the obtained refrigerator oil has low flocculation point with a refrigerant R22, excellent thermal stability and high-temperature oxidation resistance, and good low-temperature fluidity, can be particularly used in special industrial application fields requiring deep refrigeration, makes up the deficiency of the refrigeration effect when mineral refrigerator oil is used at present in China, and has wide application prospect.
The invention also provides a preparation method of the refrigerator oil, which comprises the following steps: mixing 25-75 parts by weight of alkylbenzene containing a branched chain and 25-75 parts by weight of diester, then sequentially adding 0.2-2 parts by weight of antioxidant, 0.01-0.5 part by weight of corrosion inhibitor, 0.5-2 parts by weight of extreme pressure antiwear agent and 0-0.05 part by weight of antifoaming agent, heating and uniformly stirring under a vacuum condition to obtain the refrigerator oil; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain.
In the present invention, the sources of all raw materials are not particularly limited, and they may be commercially available.
In the present invention, the alkylbenzene containing branched chain, diester, antioxidant, corrosion inhibitor, extreme pressure antiwear agent and antifoaming agent are the same as described above, and are not described herein again.
Mixing alkylbenzene containing a branched chain with diester, then sequentially adding an antioxidant corrosion inhibitor, an extreme pressure antiwear agent and an antifoaming agent, heating and uniformly stirring under a vacuum condition to obtain the refrigerator oil; the heating temperature is preferably 50-70 ℃; the stirring vacuum degree is preferably-0.092 MPa to-0.098 MPa.
The invention also provides the application of the refrigerator oil in a refrigerating system with a hydrochlorofluorocarbon refrigerant; the refrigerant is preferably R22.
In order to further illustrate the present invention, the following will describe in detail a refrigerator oil, its preparation method and application in conjunction with the examples.
The reagents used in the following examples are all commercially available.
Examples 1 to 2 and comparative examples 1 to 3
The properties of the raw alkylbenzene in examples and comparative examples are shown in Table 1.
According to the raw material ratio of each component in the table 2, alkylbenzene containing a branched chain and diester are mixed, then an antioxidant corrosion inhibitor, an extreme pressure antiwear agent and an antifoaming agent are sequentially added, and the mixture is uniformly stirred at the temperature of 50-70 ℃ and the vacuum degree of-0.092 MPa-0.098 MPa to obtain the refrigerator oil. Please give specific names of the 1-5 alkylbenzenes.
TABLE 1 properties of alkylbenzenes
As can be seen from Table 1:
1) the alkylbenzene only contains monosubstitution, and has lower flocculation point with refrigerant hydrochlorofluorocarbon (such as R22) than monosubstitution and para-substituted mixture.
2) The alkyl benzene only contains single substitution, and when the alkyl benzene has methyl on a branched chain, the alkyl benzene has lower flocculation point with refrigerant hydrochlorofluorocarbon (such as R22) than the alkyl benzene does not have methyl.
3) When the para-substitution is high in the alkylbenzene (sample 5), the flocculation point of the alkylbenzene and the refrigerant hydrochlorofluorocarbon (such as R22) is increased.
TABLE 2 refrigerating machine oil composition and Performance test results
As can be seen from Table 2:
1) comparative examples 1 and 2 and examples 1 and 2 have lower flocculation points than-60 ℃ with refrigerant hydrochlorofluorocarbons (e.g., R22), but comparative example 3 has higher flocculation points with refrigerant hydrochlorofluorocarbons (e.g., R22), and may be associated with base oils (higher flocculation points for para-disubstituted alkylbenzenes) therein.
2) The viscosity index of examples 1 and 2 is higher than that of comparative example 1, indicating better viscosity temperature performance.
3) The kinematic viscosity of the embodiment 1 and the embodiment 2 is higher than that of the comparative embodiment 2, and the refrigeration equipment is more suitable for the working condition requirement.
Claims (10)
1. A refrigerator oil, comprising:
the alkylbenzene containing the branched chain is monosubstituted alkylbenzene containing the branched chain and/or para-disubstituted alkylbenzene containing the branched chain.
2. The refrigerator oil of claim 1 wherein the branches of the branched alkylbenzene are methyl groups.
3. The refrigerator oil of claim 1 wherein the branched alkylbenzene has a kinematic viscosity at 40 ℃ of 45 to 95mm2/s。
4. The refrigerator oil of claim 1 wherein the diester has a kinematic viscosity at 40 ℃ of 26 to 32mm2/s。
5. The refrigerator oil of claim 1 wherein the antioxidant is selected from one or more of organic phenolic antioxidants, sulfur-nitrogen type compounds and complex phosphate compounds.
6. The refrigerator oil of claim 1 wherein the corrosion inhibitor is selected from one or more of sulfonates, fatty acids and their derivatives and complex phosphate compounds.
7. The refrigerator oil of claim 1 wherein the extreme pressure antiwear agent is selected from a sulfur phosphorus nitrogen complex compound and/or an organic chloride; the anti-foaming agent is selected from silicon type anti-foaming agents and/or non-silicon type anti-foaming agents.
8. A method for preparing a refrigerating machine oil, comprising:
mixing 25-75 parts by weight of alkylbenzene containing a branched chain and 25-75 parts by weight of diester, then sequentially adding 0.2-2 parts by weight of antioxidant, 0.01-0.5 part by weight of corrosion inhibitor, 0.5-2 parts by weight of extreme pressure antiwear agent and 0-0.05 part by weight of antifoaming agent, heating and uniformly stirring under a vacuum condition to obtain the refrigerator oil; the alkylbenzene containing the branched chain is monosubstituted alkylbenzene and/or para-disubstituted alkylbenzene.
9. The method of claim 8, wherein the heating temperature is 50 ℃ to 70 ℃; the stirring vacuum degree is-0.092 MPa to-0.098 MPa.
10. Use of the refrigerator oil according to any one of claims 1 to 7 or the refrigerator oil produced according to any one of claims 8 to 9 in a refrigeration system wherein the refrigerant is a hydrochlorofluorocarbon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911000678.9A CN110699158B (en) | 2019-10-21 | 2019-10-21 | Refrigerating machine oil, preparation method and application thereof |
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| CN201911000678.9A CN110699158B (en) | 2019-10-21 | 2019-10-21 | Refrigerating machine oil, preparation method and application thereof |
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| CN110699158B CN110699158B (en) | 2022-11-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011382A (en) * | 2020-08-25 | 2020-12-01 | 抚顺欧力石化有限公司 | Preparation method of synthetic refrigerator oil |
| CN114854478A (en) * | 2022-04-28 | 2022-08-05 | 中国石油化工股份有限公司 | Refrigerating machine oil composition and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112011382A (en) * | 2020-08-25 | 2020-12-01 | 抚顺欧力石化有限公司 | Preparation method of synthetic refrigerator oil |
| CN114854478A (en) * | 2022-04-28 | 2022-08-05 | 中国石油化工股份有限公司 | Refrigerating machine oil composition and preparation method thereof |
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| CN110699158B (en) | 2022-11-22 |
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