Anti-coking steam turbine oil composition as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of lubricating oil, and particularly relates to an anti-coking steam turbine oil composition as well as a preparation method and application thereof. The steam turbine oil composition comprises the following components in percentage by mass: 0.1-2% of a polycyclic thiophene derivative antioxidant, 0.5-5% of an antirust agent, 0.01-0.1% of a metal deactivator, 0-3% of other antioxidants, 0.01-0.03% of a demulsifier, 0.01-0.05% of an anti-wear reagent at extreme pressure and the balance of base oil, totaling 100%. According to the steam turbine oil composition provided by the invention, the polycyclic thiophene derivative is used as a main antioxidant, and multiple functional additives are compounded, so that the steam turbine oil composition shows excellent coking resistance, oxidation resistance and anti-rust property, and all the components show good compatibility and synergistic effect, so that the steam turbine oil composition is stable and excellent in performance, meets the harsh working condition requirements of steam turbines such as high temperature and high pressure in the future, and has wide application prospects. Good application prospects are realized.

Description

Technical Field

[0001] This invention belongs to the field of lubricating oil technology, specifically relating to an anti-coking turbine oil composition, its preparation method, and its application. Background Technology

[0002] A steam turbine is a rotary power unit that uses the pressure and / or heat energy of steam or other working fluids to drive a rotor, generating mechanical work to power equipment such as pumps, compressors, and ship propellers; or converting it into electrical energy through a generator. Steam turbines are widely used in the power industry, ship propulsion, petrochemical industry, and other applications requiring high-power drive. Steam turbine oil must not only provide lubrication to reduce friction and wear between mechanical parts, but also possess good thermal stability and oxidation resistance. Coking is a prominent problem during steam turbine operation. Coking mainly occurs because the oil gradually oxidizes under high temperature and air conditions, generating oxidation products that further condense to form high-molecular-weight polymers, leading to increased oil viscosity until coking occurs. Coking degrades oil performance, affecting its lubrication and heat transfer efficiency, accelerating corrosion of the oil and mechanical parts, and shortening the oil's service life.

[0003] To address the coking problem in turbine oils, the industry has proposed various methods, including adding chemical antioxidants, such as amines and phenolic compounds, to slow down the oxidation process; selecting base oils with better thermal stability and antioxidant properties; improving the overall performance of the oil by adjusting additive formulations; and promptly identifying and addressing oil oxidation and coking problems through regular oil analysis and equipment maintenance.

[0004] For example, Chinese invention patent application CN104893683A discloses an anti-coking alkylbenzene synthetic heat transfer oil and its preparation method, which is mainly composed of the following components: alkylbenzene base oil, amine antioxidants, phenolic antioxidants, detergents, and dispersants; wherein the content of alkylbenzene base oil should not be less than 95wt%; the alkylbenzene base oil has the following characteristics: initial boiling point > 320℃, density > 0.83g / cm3, flash point > 180℃, residual carbon < 0.02%, acid value < 0.02mg KOH / g, pour point < -55℃, and copper strip corrosion grade less than 1. However, under high-temperature operating conditions, the synthetic heat transfer oil of this invention cannot control the formation of varnish and carbon deposits.

[0005] Another Chinese invention patent application, CN104651026A, discloses an anti-coking turbine oil and its preparation method. It comprises hydrorefined base oil, synthetic base oil, extreme pressure anti-wear agent, antioxidant, pour point depressant, demulsifier, and antifoaming agent. The hydrorefined base oil refers to API Group II or III base oils. The synthetic base oil is propylene oxide polyalkylene ether. The extreme pressure anti-wear agent is a composition of ashless composite additives and acidic sulfides. The antioxidant is a mixture of thioether-based liquid high molecular weight phenol, alkyl diphenylamine, or their derivatives. The oil composition of this invention contains a polyalphaolefin as the pour point depressant, a polyether-type demulsifier, and a composite antifoaming agent. The composition by weight percentage is 70-95% hydrorefined base oil, 0-30% synthetic base oil, 0.3-1.5% extreme pressure anti-wear agent, 0.5-2% antioxidant, 0.1-1% pour point depressant, 0.01-0.05% demulsifier, and 0.01-0.04% antifoaming agent. However, the oil composition of this invention does not exhibit ideal anti-coking, anti-oxidation, and anti-rust properties under high temperature and high speed conditions.

[0006] Therefore, there is an urgent need in the art to provide a turbine oil composition that still exhibits excellent anti-coking, dispersibility, oxidation resistance, and rust prevention properties under the harsh operating conditions of steam turbines at high temperatures and high speeds. Summary of the Invention

[0007] This invention addresses the problems existing in the prior art by providing an anti-coking turbine oil composition, its preparation method, and its application.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] An anti-coking turbine oil composition, by weight percentage, comprises the following components: 0.1-2% polycyclic thiophene derivative antioxidant, 0.5-5% rust inhibitor, 0.01-0.1% metal passivator, 0-3% other antioxidants, 0.01-0.03% demulsifier, 0.01-0.05% extreme pressure anti-wear agent, 0.01-0.03% antifoaming agent, and base oil to make up to 100%.

[0010] More preferably, by weight percentage, it comprises the following components: 0.2-1% polycyclic thiophene derivative antioxidant, 0.5-1% rust inhibitor, 0.03-0.05% metal passivator, 0.2-0.6% other antioxidants, 0.01-0.02% demulsifier, 0.01-0.02% extreme pressure anti-wear agent, 0.01-0.02% antifoaming agent, and base oil to make up to 100%.

[0011] More preferably, by weight percentage, it comprises the following components: 0.2-0.8% polycyclic thiophene derivative antioxidant, 0.5-0.8% rust inhibitor, 0.03-0.04% metal passivator, 0.4-0.6% other antioxidants, 0.01-0.15% demulsifier, 0.015-0.02% extreme pressure anti-wear agent, 0.015-0.02% antifoaming agent, and base oil to make up to 100%.

[0012] Preferably, the polycyclic thiophene derivative antioxidant includes at least one of 4-butylnaphtho[2,3-B]thiophene, 5-butylnaphtho[2,3-B]thiophene, 4-dodecylnaphtho[2,3-B]thiophene, 5-dodecylnaphtho[2,3-B]thiophene, 3-hexyl-4-octylthiopheno[2,3-B]indole, 3-hexyl-thiopheno[2,3-B]indole, and 4-octylthiopheno[2,3-B]indole.

[0013] More preferably, the polycyclic thiophene derivative antioxidant includes at least one of 4-butylnaphtho[2,3-B]thiophene, 4-dodecylnaphtho[2,3-B]thiophene, and 3-hexyl-4-octylthiopheno[2,3-B]indole.

[0014] Preferably, the rust inhibitor includes at least one of alkenyl succinic acid rust inhibitors and alkenyl succinate rust inhibitors.

[0015] Preferably, the alkenyl succinic acid rust inhibitor is selected from at least one of dodecenyl succinic acid, decenyl succinic acid, tetradecenyl succinic acid, and hexadecenyl succinic acid.

[0016] More preferably, the alkenyl succinic acid rust inhibitor is dodecenyl succinic acid, tetradecenyl succinic acid, or hexadecenyl succinic acid.

[0017] Preferably, the alkenyl succinate rust inhibitor is selected from at least one of dodecenyl succinate half-ester, decenyl succinate half-ester, tetradecenyl succinate half-ester, and hexadecenyl succinate half-ester.

[0018] More preferably, the alkenyl succinate rust inhibitor is dodecenyl succinate half ester or decenyl succinate half ester.

[0019] Preferably, the metal passivating agent is selected from at least one of thiadiazole derivatives, benzotriazole and its derivatives, and N,N'-disaline propanediamine. Such metal passivating agents have good oil solubility, can prevent corrosion of metal surfaces by sulfur and organic acids, and can react with metal ions to form inert substances, thus eliminating their catalytic oxidation effect.

[0020] Preferably, the thiadiazole derivative is selected from at least one of butylthiadiazole, octylthiadiazole, and dodecylthiadiazole.

[0021] Preferably, the benzotriazole derivative is selected from at least one of methylbenzotriazole, benzotriazole octadecylamine salt, and N-di-n-butylaminomethylenetriazole.

[0022] Preferably, the base oil includes at least one of API Group II base oil and API Group III base oil.

[0023] Preferably, the other antioxidants include at least one selected from thiocarbamate, tris(2,4-di-tert-butylphenyl)phosphite, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2,6-di-tert-butyl-p-cresol, octylphenyl-α-naphthylamine, dioctyl diphenylamine, dinonyl diphenylamine, octyl butyl diphenylamine, nonyl butyl diphenylamine, styryl octyl diphenylamine, and α-methylstyryl diphenylamine.

[0024] Preferably, the thiocarbamate is selected from at least one of dimethyl thiocarbamate, diethyl thiocarbamate, and ethyl phenyl thiocarbamate; and the octylphenyl-α-naphthylamine is selected from at least one of p-n-octylphenyl-α-naphthylamine and m-n-octylphenyl-α-naphthylamine.

[0025] More preferably, the other antioxidants include at least one of tris(2,4-di-tert-butylphenyl) phosphite, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octylphenyl-α-naphthylamine, and octylbutyldiphenylamine.

[0026] Preferably, the demulsifier is a tetraoxypropylene derivative of ethylene oxide / propylene oxide block copolymer ether or amine.

[0027] Preferably, the tetraoxypropylene derivative of the amine is selected from at least one of polyetheramine D-230, polyetheramine D-400, and jefamine T-403.

[0028] Preferably, the extreme pressure anti-wear agent is selected from at least one of di-n-butyl phosphite, triaryl phosphate, and trialkyl phosphate.

[0029] Preferably, the trialkyl phosphate is selected from at least one of tributyl phosphate, tripropyl phosphate, and trihexyl phosphate.

[0030] Preferably, the antifoaming agent is selected from at least one of composite antifoaming agents, polymethacrylate, and polyacrylate.

[0031] Preferably, the composite antifoaming agent is composite antifoaming agent No. 1 or composite antifoaming agent No. 2.

[0032] The present invention also provides a method for preparing the above-mentioned turbine oil composition, comprising the following steps: mixing polycyclic thiophene derivative antioxidant, rust inhibitor, metal passivator, other antioxidant, demulsifier, extreme pressure anti-wear agent, antifoaming agent and base oil to obtain the final product.

[0033] The present invention also provides the application of the above-described turbine oil composition or the turbine oil composition prepared by the above-described preparation method in the preparation of turbine oil.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The turbine oil composition provided by this invention uses polycyclic thiophene derivatives as the main antioxidant and is compounded with a variety of functional additives. It exhibits excellent anti-coking, anti-oxidation and anti-rust properties. The components show good compatibility and synergistic effect, making its performance stable and excellent. It meets the harsh operating conditions of turbines such as high temperature and high pressure in the future and has good application prospects. Detailed Implementation

[0036] It is worth noting that the raw materials used in this invention are all commercially available products.

[0037] Example 1

[0038] An anti-coking turbine oil composition, the components of which are shown in Table 1 by mass percentage.

[0039] Table 1. Composition and proportion of anti-coking turbine oil composition

[0040] name mass / wt% 4-Butylnaphtho[2,3-B]thiophene 0.5 Dodecenyl succinic acid 0.5 Tris(2,4-di-tert-butylphenyl)phosphite 0.05 Pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] 0.5 Methylbenzotriazole 0.03 Ethylene oxide / propane block copolymer 0.01 Triaryl phosphate 0.02 polyacrylate 0.02 Group II base oils 70 Group III base oils 28.37

[0041] The preparation method of the above turbine oil composition is as follows: Group II base oil and Group III base oil are added to a blending kettle and stirred at 500 r / min, and the oil temperature is stabilized at 60±2℃; then 4-butylnaphtho[2,3-B]thiophene, dodecenyl succinic acid, tris(2,4-di-tert-butylphenyl) phosphite, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], methylbenzotriazole and triaryl phosphate are added in sequence, and stirred for 2 h until the oil is clear and transparent; finally, polyacrylate and ethylene oxide / propane block copolymer are added, and stirred for 0.5 h until the oil is clear and transparent and free of obvious foreign matter, which is the final product.

[0042] Example 2

[0043] An anti-coking turbine oil composition, the components of which are shown in Table 2 by mass percentage.

[0044] Table 2 Composition and proportion of anti-coking turbine oil composition

[0045]

[0046]

[0047] The preparation method of the above turbine oil composition is as follows: Group II base oil and Group III base oil are added to a blending kettle and stirred at 500 r / min, and the oil temperature is stabilized at 60±2℃; then 4-dodecylnaphtho[2,3-B]thiophene, dodecenyl succinate half ester, octylphenyl-α-naphthylamine, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], methylbenzotriazole and triaryl phosphate are added in sequence, and stirred for 2 h until the oil is clear and transparent; finally, polymethacrylate and ethylene oxide / propane block copolymer are added and stirred for 0.5 h until the oil is clear and transparent and free of obvious foreign matter, which is the final product.

[0048] Example 3

[0049] An anti-coking turbine oil composition, the components of which are shown in Table 3 by mass percentage.

[0050] Table 3 Composition and proportion of anti-coking turbine oil composition

[0051] name mass / wt% 4-Dodecylnaphtho[2,3-B]thiophene 0.2 Dodecenyl succinate half-ester 0.5 3-Hexyl-4-octylindolthiophene 0.5 Dodecylthiadiazole 0.03 Ethylene oxide / propane block copolymer 0.01 Tributyl phosphate 0.02 polyacrylate 0.03 Group II base oils 70 Group III base oils 28.71

[0052] The preparation method of the above turbine oil composition is as follows: Group II base oil and Group III base oil are added to a blending kettle and stirred at 500 r / min, and the oil temperature is stabilized at 60±2℃; then 4-dodecylnaphthalene[2,3-B]thiophene, dodecenyl succinate half ester, 3-hexyl-4-octylindolethiophene, dodecylthiadiazole and tributyl phosphate are added in sequence and stirred for 2 h until the oil is clear and transparent; finally, polyacrylate and ethylene oxide / propane block copolymer are added and stirred for 0.5 h until the oil is clear and transparent and free of obvious foreign matter, which is the final product.

[0053] Example 4

[0054] An anti-coking turbine oil composition, the components of which are shown in Table 4 by mass percentage.

[0055] Table 4. Composition and proportion of anti-coking turbine oil composition

[0056] name mass / wt% 3-Hexyl-4-octylthiopheno[2,3-B]indole 2 decenyl succinate half-ester 5 2,6-Di-tert-butyl-p-cresol 1 Octylbutyldiphenylamine 2 N,N'-Disalminepropanediamine 0.1 Ethylene oxide / propane block copolymer 0.03 Trihexyl phosphate 0.05 polymethyl methacrylate 0.03 Group II base oils 70 Group III base oils 19.79

[0057] The preparation method of the above turbine oil composition is as follows: Group II base oil and Group III base oil are added to a blending kettle and stirred at 500 r / min, and the oil temperature is stabilized at 60±2℃; then 3-hexyl-4-octylthiophene[2,3-B]indole, decenyl succinate half ester, 2,6-di-tert-butyl-p-cresol, octylbutyl diphenylamine, N,N'-disalicylic acid propylenediamine and trihexyl phosphate are added in sequence and stirred for 2 h until the oil is clear and transparent; finally, polymethyl methacrylate and ethylene oxide / propane block copolymer are added and stirred for 0.5 h until the oil is clear and transparent and free of obvious foreign matter, which is the final product.

[0058] Comparative Example 1

[0059] Same as Example 1, except that 4-butylnaphtho[2,3-B]thiophene is replaced with 2-octylthiophene.

[0060] An anti-coking turbine oil composition, the components of which are shown in Table 5 by mass percentage.

[0061] Table 5 Composition and proportion of anti-coking turbine oil composition

[0062]

[0063]

[0064] The preparation method of the above turbine oil composition is the same as that in Example 1.

[0065] Comparative Example 2

[0066] Same as Example 2, except that it does not contain 4-dodecylnaphthalene and [2,3-B]thiophene.

[0067] An anti-coking turbine oil composition, the components of which are shown in Table 6 by mass percentage.

[0068] Table 6 Composition and proportion of anti-coking turbine oil composition

[0069] name mass / wt% Dodecenyl succinate half-ester 0.5 p-n-octylphenyl-α-naphthylamine 0.05 Pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] 0.5 Methylbenzotriazole 0.03 Ethylene oxide / propane block copolymer 0.01 Triaryl phosphate 0.02 polymethyl methacrylate 0.01 Group II base oils 70 Group III base oils 28.88

[0070] The preparation method of the above turbine oil composition is the same as that in Example 2.

[0071] Comparative Example 3

[0072] Same as Example 3, except that 4-dodecylnaphtho[2,3-B]thiophene and 3-hexyl-4-octylindolethiophene are replaced with p-n-octylphenyl-α-naphthylamine.

[0073] An anti-coking turbine oil composition, the components of which are shown in Table 7 by mass percentage.

[0074] Table 7 Composition and proportion of anti-coking turbine oil composition

[0075]

[0076]

[0077] The preparation method of the above turbine oil composition is the same as that in Example 3.

[0078] Comparative Example 4

[0079] Similar to Example 1, except that Group II and Group III base oils are replaced with Group I base oils. An anti-coking turbine oil composition, with components shown in Table 8 by mass percentage, is also described.

[0080] Table 8 Composition and proportion of anti-coking turbine oil composition

[0081] name mass / wt% 4-Butylnaphtho[2,3-B]thiophene 0.5 Dodecenyl succinic acid 0.5 Tris(2,4-di-tert-butylphenyl)phosphite 0.05 Pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] 0.5 Methylbenzotriazole 0.03 Ethylene oxide / propane block copolymer 0.01 Triaryl phosphate 0.02 polyacrylate 0.02 Group I base oils 98.37

[0082] The preparation method of the above turbine oil composition is the same as that in Example 1.

[0083] Comparative Example 5

[0084] Same as Example 1, except that the component ratios are different.

[0085] An anti-coking turbine oil composition, the components of which are shown in Table 9 by mass percentage.

[0086] Table 9 Composition and proportion of anti-coking turbine oil compositions

[0087]

[0088]

[0089] The preparation method of the above turbine oil composition is the same as that in Example 1.

[0090] Test case

[0091] The anti-coking turbine oil compositions prepared in Examples 1-4 and Comparative Examples 1-5 were subjected to performance tests. The test indicators and methods are as follows:

[0092] Kinematic viscosity (100℃, mm) 2 / s): Refer to GB-T 265-1988 "Determination of Kinematic Viscosity and Calculation of Dynamic Viscosity of Petroleum Products";

[0093] Copper strip corrosion (100℃, 3h / grade): Refer to GB / T 5096-2017 "Test Method for Copper Strip Corrosion of Petroleum Products";

[0094] Liquid phase corrosion method A: Refer to GB-T 11143-2008 "Test method for rust prevention performance of mineral oil with inhibitor in the presence of water";

[0095] Demulsibility (54℃): Refer to GB / T 7305-2003 "Determination of Water Separability of Petroleum and Synthetic Liquids - Demulsibility";

[0096] Rotating oxygen bomb (min): Refer to NB / SH / T 0193-2022 "Determination of Oxidation Stability of Lubricating Oils - Rotating Oxygen Bomb Method";

[0097] Oxidation stability (1000h sludge / mg): Refer to SH / T 0565-2008 "Determination of sludge and corrosion tendency of mineral oils with inhibitors".

[0098] The test data results are shown in Table 10.

[0099] Table 10 Performance Tests

[0100]

[0101]

[0102] As shown in Table 10, compared with the component without polycyclic thiophene derivative antioxidants, the component containing polycyclic thiophene derivatives exhibits better performance in liquid phase corrosion and rotating bomb oxidation, indicating that polycyclic thiophene derivatives have excellent antioxidant effects. This formulation system performs better in API Group II and API Group III base oils than in Group I base oils.

[0103] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A turbine oil composition for preventing coking, characterized in that, By weight percentage, it comprises the following components: 0.1-2% polycyclic thiophene derivative antioxidant, 0.5-5% rust inhibitor, 0.01-0.1% metal passivator, 0-3% other antioxidants, 0.01-0.03% demulsifier, 0.01-0.05% extreme pressure anti-wear agent, 0.01-0.03% antifoaming agent, and base oil to make up to 100%.

2. The turbine oil composition according to claim 1, characterized in that, The polycyclic thiophene derivative antioxidants include at least one of 4-butylnaphtho[2,3-B]thiophene, 5-butylnaphtho[2,3-B]thiophene, 4-dodecylnaphtho[2,3-B]thiophene, 5-dodecylnaphtho[2,3-B]thiophene, 3-hexyl-4-octylthieno[2,3-B]indole, 3-hexyl-thieno[2,3-B]indole, and 4-octylthieno[2,3-B]indole.

3. The turbine oil composition according to claim 2, characterized in that, The polycyclic thiophene derivative antioxidants include at least one of 3-butylnaphthothiophene, 3-dodecylnaphthothiophene, and 3-hexyl-4-octylindolethiophene.

4. The turbine oil composition according to claim 1, characterized in that, The rust inhibitor includes at least one of alkenyl succinic acid rust inhibitors and alkenyl succinate rust inhibitors.

5. The turbine oil composition according to claim 4, characterized in that, The alkenyl succinic acid rust inhibitor is selected from at least one of dodecenyl succinic acid, decenyl succinic acid, tetradecenyl succinic acid, and hexadecenyl succinic acid.

6. The turbine oil composition according to claim 4, characterized in that, The alkenyl succinate rust inhibitor is selected from at least one of dodecenyl succinate half-ester, decenyl succinate half-ester, tetradecenyl succinate half-ester, and hexadecenyl succinate half-ester.

7. The turbine oil composition according to claim 1, characterized in that, The metal passivating agent is selected from at least one of thiadiazole derivatives, benzotriazole and its derivatives, and N,N'-disaline propylenediamine.

8. The turbine oil composition according to claim 7, characterized in that, The thiadiazole derivative is selected from at least one of butylthiadiazole, octylthiadiazole and dodecylthiadiazole, and the benzotriazole derivative is selected from at least one of methylbenzotriazole, benzotriazole octadecylamine salt and N-di-n-butylaminomethylenebenzenetriazole.

9. The turbine oil composition according to claim 1, characterized in that, The base oil includes at least one of API Group II base oil and API Group III base oil.

10. The turbine oil composition according to claim 1, characterized in that, The other antioxidants include at least one selected from the following: thiocarbamate, tris(2,4-di-tert-butylphenyl)phosphite, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2,6-di-tert-butyl-p-cresol, octylphenyl-α-naphthylamine, dioctyl diphenylamine, dinonyl diphenylamine, octylbutyl diphenylamine, nonylbutyl diphenylamine, styryloctyl diphenylamine, and α-methylstyryl diphenylamine.

11. The turbine oil composition according to claim 1, characterized in that, The demulsifier is a tetraoxypropylene derivative of ethylene oxide / propylene oxide block copolymer ether or amine.

12. The turbine oil composition according to claim 1, characterized in that, The extreme pressure anti-wear agent is selected from at least one of di-n-butyl phosphite, triaryl phosphate, and trialkyl phosphate.

13. The turbine oil composition according to claim 12, characterized in that, The trialkyl phosphate is selected from at least one of tributyl phosphate, tripropyl phosphate and trihexyl phosphate.

14. The turbine oil composition according to claim 1, characterized in that, The antifoaming agent is selected from at least one of composite antifoaming agents, polymethyl methacrylate, and polyacrylate.

15. A method for preparing a turbine oil composition according to any one of claims 1-14, characterized in that, The process includes the following steps: mixing polycyclic thiophene derivative antioxidants, rust inhibitors, metal passivators, other antioxidants, demulsifiers, extreme pressure anti-wear agents, antifoaming agents, and base oils to obtain the final product.

16. The use of a turbine oil composition according to any one of claims 1-14 or a turbine oil composition prepared by the preparation method according to claim 15 in the preparation of turbine oil.

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