Hydrogen gas turbine oil composition as well as preparation method and application thereof

Abstract

The invention relates to a hydrogen gas turbine oil composition as well as a preparation method and application thereof, and the hydrogen gas turbine oil composition comprises the following components in parts by weight: 99.120-99.459 parts of hydrogenated mineral oil; 0.02 to 0.05 part of an anti-wear reagent at extreme pressure; 0.01 to 0.02 part of a demulsifying agent; 0.45 to 0.65 part of an antioxidant; 0.02 to 0.05 part of a metal deactivator; 0.04 to 0.06 part of an antirust agent; 0.001 to 0.05 part of an anti-foaming agent; the antioxidant is a mixture of alkyl phenyl-alpha-naphthylamine, N-phenyl-alpha-naphthylamine and phosphorous acid triester; the weight ratio of the alkyl phenyl-alpha-naphthylamine to the N-phenyl-alpha-naphthylamine to the phosphorous acid triester is (4-12): (1-2): (4-8). According to the hydrogen gas turbine oil composition, an additive compounding system is used, metal corrosion resistance and extreme pressure wear resistance of an oil product are improved, oil sludge precipitation and paint film formation are greatly reduced, the service life of the oil product is prolonged, and the base oil is mineral oil; the formula effectively balances the adverse effects of the extreme pressure agent on the rust prevention and thermal oxidation stability of oil products, various additives show good compatibility and synergistic effect, the performance is excellent, and the use requirements of hydrogen gas turbine equipment are met.

Description

Technical Field

[0001] The invention relates to a hydrogen gas turbine oil composition and relates to the technical field of turbine oil. Background Art

[0002] Hydrogen gas turbines are new high-end gas turbine equipment that use hydrogen as a combustion medium. Hydrogen gas turbine oil is used to power hydrogen fuel gas turbines. Hydrogen and natural gas have different thermophysical and chemical properties, which makes the two have obvious differences in combustion characteristics. Hydrogen gas turbines using hydrogen as fuel face operational difficulties such as flashback, spontaneous combustion, higher NOx emissions and unstable characteristics. The matching of turbine oil products for hydrogen gas turbines (hereinafter referred to as hydrogen gas turbine oil) brings the following challenges. First, the initial temperature of the combined cycle power generation unit using decarbonized fuel is increased to 1700℃, which is higher than that of H-class gas engines (1426-1600℃). The oil is required to have higher thermal oxidation stability and lower sludge / varnish formation tendency under high temperature conditions. At the same time, the oil needs to be resistant to high temperature oxidation and high temperature corrosion to bearing metals; second, it faces high temperature and high pressure water vapor during operation, requiring lubricants to have excellent anti-emulsification properties.

[0003] Large international hydrogen gas turbine manufacturers (GE, SIEMENS, Mitsubishi Power, ANSALDO, etc.) have all carried out research and verification of hydrogen-rich fuel combustion technology and updated relevant gas turbine oil specifications based on the characteristics of their own hydrogen gas turbines. Domestic hydrogen gas turbine technology has a certain industrial foundation, forming a gas turbine manufacturing industry group with Harbin Electric Group, Shanghai Electric Group, and Dongfang Electric Group as the core, and AVIC Engine, ENN and other high-tech innovative enterprises as the auxiliary. Domestic gas turbine manufacturers mainly adopt the mode of cooperation with international electric companies or technology introduction in the production of gas turbines. For example, SAIC cooperates with SIEMENS and ANSALDO to produce F-class gas turbines, Dongfang Electric cooperates with Mitsubishi Power to produce F-class and J-class gas turbines, and Harbin Steam and GE cooperate to produce F-class and H-class gas turbines. Therefore, the performance requirements of gas turbine oil for related gas turbines mainly refer to foreign standards or OEM (original equipment manufacturer) oil product specifications. At present, there is no universal standard for hydrogen gas turbine oil at home and abroad. Lubricant companies develop turbine oil products for hydrogen gas turbines according to gas turbine oil specifications. Hydrogen gas turbine oil is a cutting-edge product. At present, there is no relevant literature on the development and performance improvement of hydrogen gas turbine oil. The following existing technical literature records the development of gas turbine oil in this field:

[0004] The Chinese invention patent application CN113493719A discloses a gas turbine lubricating oil composition, which includes 0.5-2% antioxidant, 0.1-0.5% ionic liquid, 0.03-0.06% rust inhibitor, 0.04-0.08% dispersant, 0.01-0.02% demulsifier, 0.01-0.02% antifoaming agent, 0.1-0.02% pour point depressant, and the balance of base oil. The composition is characterized by containing a new type of ionic liquid compounding system, which effectively protects metals and meets the requirements of the operating conditions of today's gas turbine equipment. However, the thiazole phosphate ionic liquid used in this solution has slightly poor friction reduction under low loads, strong polarity, and has a certain surface corrosion effect on steel. And the structure is special and it is difficult to buy on the market. In addition, this solution does not pay attention to the control indicators of sludge and paint film.

[0005] The Chinese invention patent application publication specification CN111575094A provides a gas turbine oil composition, which contains 0.1 to 0.5 parts of antioxidant; 0.03 to 0.1 parts of metal passivator; 0.04 to 0.1 parts of rust inhibitor; 0.01 to 0.05 parts of demulsifier; 0.005 to 0.02 parts of antifoaming agent; and 98.4 to 99.6 parts of base oil, wherein the antioxidant is at least one selected from alkyl diphenylamine, alkyl phenyl-α-naphthylamine, phenyl-α-naphthylamine or dialkyl dithiocarbamate, which mainly solves the technical problem of insufficient high-temperature antioxidant performance of gas turbine oil compositions in the prior art, but the composition has no extreme pressure and anti-wear effect.

[0006] The Chinese invention patent application publication specification CN105623794A relates to a gas turbine lubricating oil additive composition, containing 10-40% antioxidant, 1-5% metal passivator, 2-6% rust inhibitor, 1-5% dispersant, 0.5-5% demulsifier, 0.5-5% antifoaming agent, and the balance diluent. It is characterized by using a compound system of amine antioxidants and phosphorus-imidazole antioxidants. The composition is an additive package and has no extreme pressure and anti-wear effects. Summary of the invention

[0007] The present application discloses a hydrogen gas turbine oil composition, which uses a specific antioxidant and extreme pressure anti-wear agent compound system to improve the metal corrosion resistance and extreme pressure anti-wear properties of the oil, while greatly reducing sludge precipitation and varnish formation, and extending the service life of the oil. The base oil is mineral oil; the formula effectively balances the adverse effects of extreme pressure agents on the rust prevention and thermal oxidation stability of the oil, and various additives show good compatibility and synergistic effects, excellent performance, and meet the use requirements of hydrogen gas turbine equipment. The oil quality meets the specification requirements of GB11120-2011L-TGSE gas / steam turbine oil, and meets the MS04-MA-CL003 specification requirements of Mitsubishi Electric Corporation, and meets the technical requirements of oil products with extreme pressure performance when the bearing working environment temperature is higher than 250°C.

[0008] The product of the present invention has better sludge and paint film control capabilities, and meets the requirements of mainstream market customers for oil products with ultra-long service life and ultra-low sludge production.

[0009] One of the technical problems to be solved by the present invention is to provide a hydrogen gas turbine oil composition, in which antioxidants are strictly screened, alkylphenyl-α-naphthylamine has an alkyl chain, which can increase the oil solubility of the product and thus reduce the formation of sludge and paint film, and after compounding with N-phenyl-a-naphthylamine in an appropriate proportion, it has good performance in anti-oxidation durability, extended induction period, and inhibition of late oxidation effect of oil products, and excellent economy, and phosphite triester can improve the high-temperature corrosion performance of lubricating oil after synergistically combining with amine antioxidants in an appropriate proportion. This special additive system effectively balances the adverse effects of extreme pressure agents on oil rust prevention and thermal oxidation stability, and various additives show good compatibility and synergistic effects.

[0010] In order to solve one of the above technical problems, the technical solution adopted by the present invention is as follows: a hydrogen gas turbine oil composition, which includes the following components in percentage by weight:

[0011]

[0012] The antioxidant is a mixture of alkylphenyl-α-naphthylamine, N-phenyl-α-naphthylamine and triester phosphite;

[0013] The weight ratio of alkylphenyl-α-naphthylamine, N-phenyl-a-naphthylamine and triester phosphite is (4-12):(1-2):(4-8). Alkylphenyl-α-naphthylamine has good heat resistance, phenyl-α-naphthylamine and all-amine antioxidants have good rotating oxygen bomb test results, and triester phosphite acts as a secondary antioxidant and synergistically with amine antioxidants to improve the high-temperature corrosion resistance of oil products and extend the oxidation life of oil products. The amount of triester phosphite added should be controlled within a certain range. If the amount added is too small, it cannot have the expected antioxidant effect. If the amount added is too large, it may cause the appearance of the oil to be unstable or affect the performance of other additives.

[0014] As a preferred technical solution, the alkyl group of the alkylphenyl-α-naphthylamine is a C6-C9 alkyl group.

[0015] As a preferred technical solution, the hydrogenated mineral oil is a hydrogenated base oil of HVI Class III or above, with a kinematic viscosity at 40°C between 28.8% and 35.2%, and a viscosity index between 120 and 140.

[0016] As a preferred technical solution, the extreme pressure anti-wear agent is dialkyl dithiophosphate, triphenyl thiophosphate, tricresyl phosphate, sulfur, phosphorus and nitrogen compounds, or a mixture of the above components, such as IR353, T309, T399, RC3775. Its addition amount is controlled at 0.02wt% to 0.05wt% to improve the oil film strength of the oil product. When the addition amount is too small, the extreme pressure performance of the oil product cannot meet the requirements. When the addition amount reaches a certain amount, the extreme pressure performance of the oil product is not significantly improved if the addition amount is increased, and it will have a negative impact on other properties.

[0017] As a preferred technical solution, the demulsifier is a condensate of amine and epoxide, an oil-soluble polyether, a polyoxypropylene derivative or a mixture of the above components, such as T-1001, PE6100, X15861, LZ5957, and DL32.

[0018] The degree of polymerization of the oil-soluble polyether and polyoxypropylene type derivative is not particularly limited.

[0019] As a preferred technical solution, the amount of the demulsifier added is controlled at 0.01wt% to 0.02%. If the amount added is too small, the demulsification effect cannot be achieved, and if the amount added is too large, the demulsification effect of the oil product will be counterproductive.

[0020] As a preferred technical solution, the metal deactivator is N, N'-dialkylaminomethylenebenzotriazole, N, N-di(2-ethylhexyl)-4-methyl-1H-benzotriazole-1-methylamine, alkylthiadiazole, or a mixture of the above components, such as T551, Cuvan484, T561, and the addition amount is controlled at 0.02wt% to 0.05wt%. The selection of the above metal deactivator can effectively hinder the catalytic activity of the metal, reduce the high temperature corrosion tendency of the oil to the metal, and also enhance the inhibitory effect on copper corrosion, and increase the wear resistance and rust prevention ability of the oil.

[0021] As a preferred technical solution, the rust inhibitor is a compound mixture of dodecenylsuccinic acid and succinic acid half ester derivatives; the weight ratio of the dodecenylsuccinic acid to the succinic acid half ester derivatives is (6-8): (1-3); or, the rust inhibitor is a compound mixture of dodecenylsuccinic acid and diisobutyl maleate; the weight ratio of the dodecenylsuccinic acid to diisobutyl maleate is (6-8): (1-3). The amount of the rust inhibitor added is controlled at 0.04wt% to 0.06wt%. If the amount added is too small, the rust inhibitor cannot achieve the desired rust prevention effect. If the amount added is too large, it may affect the extreme pressure and anti-wear properties or other properties of the oil.

[0022] As a preferred technical solution, the antifoaming agent is selected from at least one of polymethyl silicone oil, acrylate and ether copolymer, and modified silicon antifoaming agent, such as T901, T921, FOAM BAN 155, and FOAM BAN 130B. The amount added is controlled at 0.001wt% to 0.05wt%. If the amount added is too small, it cannot play the due antifoaming role. If the amount added is too large, it may affect the appearance of the oil product.

[0023] The polymerization degree of polymethyl silicone oil, acrylate and ether copolymer is not limited, and the ratio of the structural units of acrylate and ether copolymer is not limited.

[0024] The second technical problem to be solved by the present invention is a method for preparing a composition corresponding to the first technical problem to be solved.

[0025] To achieve the second object of the invention, the technical solution adopted by the present invention is as follows: the lubricating oil composition is used for lubricating the sliding bearings, reduction gears, speed governors and hydraulic control systems of hydrogen gas turbines and related transmission units. The turbine oil of hydrogen gas turbines mainly plays the role of lubrication, cooling and speed regulation.

[0026] The method for preparing the hydrogen gas turbine oil composition of the present invention comprises the following steps:

[0027] Firstly, the hydrogenated mineral oil and antioxidant are heated and mixed I, and then an extreme pressure anti-wear agent, a demulsifier, a metal deactivator, a rust inhibitor and an anti-foaming agent are added, and heated and mixed II to obtain the hydrogen gas turbine oil composition;

[0028] The conditions of the heating mixing I include 80-85° C. and 1-3 hours; the time of the heating mixing I is 1 hour, 2 hours, 3 hours, or any value between any two of the above points.

[0029] The conditions of the heating mixing II include 40-50°C and 1-5 hours. The temperature of the heating mixing II is 40°C, 45°C, 50°C, or any value between any two of the above points; the time of the heating mixing II is 1h, 2h, 3h, 4h, 5h, or any value between any two of the above points.

[0030] As a specific embodiment, the method for preparing the hydrogen gas turbine oil composition of the present invention comprises the steps of:

[0031] (1) adding base oil and antioxidant in proportion, heating to 80-85°C and stirring to completely dissolve the additives, maintaining for 1-3 hours, and then lowering the temperature to 40-50°C;

[0032] (2) Add other ingredients except the antifoaming agent and stir for 2 to 3 hours until the mixture is completely dissolved and becomes transparent.

[0033] (3) Add antifoaming agent and stir for 1 to 2 hours until the antifoaming agent is completely dispersed in the oil.

[0034] The third technical problem to be solved by the present invention is the use of the composition corresponding to the first technical problem to be solved.

[0035] After a large number of experimental studies, the researchers of the present invention selected suitable base oils and additives compatible with them, and explored the types and proportions of various additives to obtain a hydrogen gas turbine oil composition, which has excellent metal corrosion resistance and extreme pressure and wear resistance, good sludge and paint film control performance, and further extended oil service life. It is suitable for lubrication of sliding bearings, reduction gears, speed governors and hydraulic control systems of hydrogen gas turbines and related transmission units. The hydrogen gas turbine oil composition has excellent comprehensive performance, metal corrosion resistance (ASTM D4636, 175℃172h), viscosity increase after the test is less than 2%, acid value increase is less than 0.1mgKOH / g, and the weight loss of metal sheets before and after the test is: cadmium sheet weight loss is less than ±0.1mg / cm 2 , aluminum sheet weight loss is less than ±0.1mg / cm 2 , copper sheet weight loss is less than ±0.1mg / cm 2 , magnesium sheet weight loss is less than ±0.1mg / cm2, steel sheet weight loss is less than ±0.1mg / cm 2 , extreme pressure and anti-wear properties (NB / SH / T 0306) FZG gear machine test / failure level is not less than level 11, in the Dry-Tost test at 120°C, the oxidation life of the remaining rotating oxygen elastic rate of 50% is at least 1200 hours, and the sludge generation is less than 40mg / kg.

[0036] The hydrogen gas turbine oil composition of the present invention uses an additive compound system to improve the metal corrosion resistance and extreme pressure and wear resistance of the oil product, while greatly reducing sludge precipitation and paint film formation, thereby extending the service life of the oil product. The base oil is mineral oil. The formula effectively balances the adverse effects of extreme pressure agents on the rust prevention and thermal oxidation stability of the oil product. Various additives show good compatibility and synergistic effects, and have excellent performance, thereby meeting the use requirements of hydrogen gas turbine equipment. DETAILED DESCRIPTION

[0037] The present invention will be further described below by way of examples.

[0038] The above raw materials in the present invention can be prepared in-house or commercially available, and the present invention is not particularly limited thereto.

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this patent in detail and do not limit the scope of protection of the present invention in any way. Unless otherwise defined, the technical terms used in the following embodiments have the same meanings as those generally understood by technicians in the field to which the present invention belongs. The reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments and equipment used in the following examples, etc., can all be purchased on the market or can be obtained by existing methods; the reagent dosage, unless otherwise specified, is the reagent dosage in conventional experimental operations; the experimental methods, unless otherwise specified, are all conventional methods.

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation method, characteristics and effects of the hydrogen gas turbine oil composition proposed by the present invention are described in detail below in combination with preferred embodiments, but it is not intended to limit the scope of the present invention.

[0041] Sources of various raw materials in the embodiments of the present invention:

[0042] Dialkyl dithiophosphate IR353 (BASF AG)

[0043] Triphenyl thiophosphate T309 (Shenyang Weihua Chemical Co., Ltd.)

[0044] Tricresyl phosphate T399 (Shandong Ruixing Flame Retardant Technology Co., Ltd.)

[0045] Sulfur, phosphorus and nitrogen compound RC3775 (LANXESS Chemical (China) Co., Ltd.)

[0046] Amine and epoxide condensate T-1001 (Wuxi Nanfang Petroleum Additives Co., Ltd.)

[0047] Polyoxypropylene derivative PE6100 (Yangzi Petrochemical-BASF Co., Ltd.)

[0048] Polyoxypropylene derivative LZ5957 (Lubrizol Corporation)

[0049] Polyoxypropylene derivative DL32 (Jinzhou Xinxing Petroleum Additives Co., Ltd.)

[0050] C6-C9 alkylphenyl-α-naphthylamine (LANXESS Chemical (China) Co., Ltd.)

[0051] N-phenyl-a-naphthylamine (Changzhou Huadaming Co., Ltd.)

[0052] Phosphite triester 626 (Tianjin Lianlong Co., Ltd.)

[0053] N, N'-Dialkylaminomethylenebenzotriazole T551 (Tianjin Yuning Chemical Co., Ltd.)

[0054] Thiadiazole derivative Cuvan484 (Yantai Hengnuo New Materials Co., Ltd.)

[0055] Alkyl thiadiazole T561 (Changzhou Huadaming Co., Ltd.)

[0056] Dodecenylsuccinic acid T746 (Dalian Huapu Chemical Co., Ltd.)

[0057] Succinic acid half ester derivative RN4800 (Shanghai Yucheng Chemical Co., Ltd.)

[0058] Diisobutyl maleate K1031 (King Co., Ltd., USA)

[0059] Polymethyl silicone oil T901 (Sinopec Lubricant Co., Ltd. Chongqing Branch)

[0060] Acrylate and ether copolymer FOAM BAN 155 (Mengqingxin Additive Trading (Shanghai) Co., Ltd.)

[0061] Polyoxypropylene modified silicone antifoaming agent FOAM BAN 130B (Mengqingxin Additive Trading (Shanghai) Co., Ltd.)

[0062] In order to evaluate the performance of this composition for the lubrication of hydrogen gas turbines, the evaluation test was carried out using the technical requirements of GB11120-2011 L-TGSE gas / steam turbine oil with a viscosity grade of 32. The results showed that the oil can meet the requirements of metal corrosion resistance, extreme pressure and anti-wear properties, and basic physical and chemical properties of turbine oil. In order to reduce sludge precipitation and varnish formation and extend the service life of the oil, the standard test method for determining the oxidation stability and insoluble matter formation of antioxidant turbine oils at 120°C without water in the MS04-MA-CL003 specification of Mitsubishi Electric Corporation (ASTM D7873-2022a) and the internationally accepted standard test method for the determination of lubricants that produce insoluble color bodies in in-service turbine oils by thin film diaphragm colorimetry (ASTMD7843-2021) were used for evaluation and testing.

[0063] Example 1

[0064] According to the weight parts in Table 1, weigh the required amount of antioxidant and add it to the hydrogenated mineral oil, heat it to 80°C and stir it, maintain it for 1 hour and then reduce the temperature to 45°C; weigh the required amount of extreme pressure anti-wear agent, demulsifier, metal deactivator, rust inhibitor and add it to the mineral base oil containing antioxidant, stir until the mixture is completely dissolved and transparent; weigh the required amount of anti-foaming agent and stir for 30 minutes to obtain the hydrogen gas turbine oil composition. The specific components of the composition are shown in Table 1.

[0065] Example 2

[0066] According to the weight parts in Table 1, weigh the required amount of antioxidant and add it to the hydrogenated mineral oil, heat it to 80°C and stir it, maintain it for 1 hour and then reduce the temperature to 45°C; weigh the required amount of extreme pressure anti-wear agent, demulsifier, metal deactivator, rust inhibitor and add it to the mineral base oil containing antioxidant, stir until the mixture is completely dissolved and transparent; weigh the required amount of anti-foaming agent and stir for 30 minutes to obtain the hydrogen gas turbine oil composition. The specific components of the composition are shown in Table 1.

[0067] Example 3

[0068] According to the weight parts in Table 1, weigh the required amount of antioxidant and add it to the hydrogenated mineral oil, heat it to 80°C and stir it, maintain it for 1 hour and then reduce the temperature to 45°C; weigh the required amount of extreme pressure anti-wear agent, demulsifier, metal deactivator, rust inhibitor and add it to the mineral base oil containing antioxidant, stir until the mixture is completely dissolved and transparent; weigh the required amount of anti-foaming agent and stir for 30 minutes to obtain the hydrogen gas turbine oil composition. The specific components of the composition are shown in Table 1.

[0069] Example 4

[0070] According to the weight parts in Table 1, weigh the required amount of antioxidant and add it to the hydrogenated mineral oil, heat it to 80°C and stir it, maintain it for 1 hour and then reduce the temperature to 45°C; weigh the required amount of extreme pressure anti-wear agent, demulsifier, metal deactivator, rust inhibitor and add it to the mineral base oil containing antioxidant, stir until the mixture is completely dissolved and transparent; weigh the required amount of anti-foaming agent and stir for 30 minutes to obtain the hydrogen gas turbine oil composition. The specific components of the composition are shown in Table 1.

[0071] Comparative Examples 1-2

[0072] Comparative Example 1 is Mobil 32 gas turbine oil, and Comparative Example 2 is Shell 32 gas turbine oil. Tests were performed according to various test methods, and the test results are shown in Table 2.

[0073] Table 1

[0074]

[0075]

[0076] Table 2

[0077]

[0078]

[0079] As shown in the test results of the examples in the table, [Examples 1 to 5] show excellent high-temperature oxidation stability and copper sheet corrosion, indicating that the product has excellent metal corrosion resistance and can control the impact of oil oxidation on bearing metal at high temperature. [Examples 1 to 5] The FZG gear machine test reached level 11 or above. Compared with comparative example 1, the product has excellent extreme pressure and anti-wear performance and can meet the requirements of hydrogen gas turbine gearbox for oil extreme pressure performance. [Examples 1 to 5] The rotating oxygen bomb value and Dry-TOST test both show excellent performance. When the oxygen bomb residue reaches 50% in the Dry-TOST high-temperature oxidation test, the simulated oxidation life is more than 1100h, and the sludge generation is less than 50mg / kg. After 300h bearing adaptability bench (FED_STD-791D (3425.2)), the oil film tendency index (MPC) remains at a low level, indicating that the product has excellent oxidation stability and good sludge and film control performance, and can effectively extend the service life during the use of turbine oil.

[0080] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A hydrogen gas turbine oil composition, comprising the following components in parts by weight: The antioxidant is a mixture of alkylphenyl-α-naphthylamine, N-phenyl-α-naphthylamine and triester phosphite; The weight ratio of alkylphenyl-α-naphthylamine, N-phenyl-a-naphthylamine and triester phosphite is (4-12):(1-2):(4-8).

2. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The extreme pressure anti-wear agent is selected from at least one of dialkyl dithiophosphate, triphenyl thiophosphate, tricresyl phosphate or sulfur-phosphorus-nitrogen compounds.

3. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The demulsifier is selected from at least one of a copolymer of ethylene oxide and propylene oxide and a polyoxypropylene derivative.

4. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The metal deactivator is selected from at least one of N,N'-dialkylaminomethylenebenzotriazole, N,N-di(2-ethylhexyl)-4-methyl-1H-benzotriazole-1-methylamine and alkylthiadiazole.

5. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The rust inhibitor is a composite mixture of dodecenylsuccinic acid and succinic acid half ester derivative; the weight ratio of the dodecenylsuccinic acid to the succinic acid half ester derivative is (6-8):(1-3); Alternatively, the rust inhibitor is a compound mixture of dodecenylsuccinic acid and diisobutyl maleic anhydride; the weight ratio of dodecenylsuccinic acid to diisobutyl maleic anhydride is (6-8):(1-3).

6. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The antifoaming agent is selected from at least one of acrylate and ether copolymers, polyoxypropylene modified silicon antifoaming agents, and polymethyl silicone oil.

7. The hydrogen gas turbine oil composition according to claim 1, characterized in that: The mineral oil is a hydrogenated base oil of HVI Class III or above, and the kinematic viscosity of the hydrogenated base oil at 40° C. is between 28.8 and 35.2 mm 2 / s, and the viscosity index is between 120 and 140.

8. A method for preparing a hydrogen gas turbine oil composition according to any one of claims 1 to 7, comprising the steps of: Firstly, the hydrogenated mineral oil and antioxidant are heated and mixed I, and then an extreme pressure anti-wear agent, a demulsifier, a metal deactivator, a rust inhibitor and an anti-foaming agent are added, and heated and mixed II to obtain the hydrogen gas turbine oil composition; The heating and mixing conditions of I include 80-85° C., 1-3 hours; The conditions of the heating mixing II include 40-50° C., 1-5 hours.

9. A method for preparing a hydrogen gas turbine oil composition according to any one of claims 1 to 7, comprising the steps of: (1) mixing the hydrogenated mineral oil and the antioxidant, raising the temperature to 80-85° C., maintaining the temperature for 1-3 hours, and then lowering the temperature to 40-50° C.; (2) Add extreme pressure anti-wear agent, demulsifier, metal deactivator, and rust inhibitor, and stir at 40-50°C for 2-3 hours; (3) Add antifoaming agent and stir at 40-50°C for 1-2 hours.

10. Use of the hydrogen gas turbine oil composition according to any one of claims 1 to 7 or the hydrogen gas turbine oil composition prepared by the method according to claim 8 or 9, characterized in that: Used for lubrication of sliding bearings, reduction gears, speed governors or hydraulic control systems of hydrogen gas turbines or hydrogen gas turbine-related transmission units.

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