A turbine oil composition and method of making

Abstract

The present application provides a turbine oil composition and preparation method, mainly solves the existing turbine oil easy to produce oil sludge and paint film problems in the prior art. The present application adopts a new turbine oil composition, which is composed of the following components in parts by weight: antioxidant 0.3-1.0 parts, metal deactivator 0.02-0.1 parts, rust inhibitor 0.02-0.05 parts, demulsifier 0.01-0.1 parts, antifoaming agent 0.005-0.05 parts, long carbon chain fatty alcohol 3-10 parts, hydrogenated base oil 88-98 parts. The present application better solves the turbine oil sludge and paint film problems.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of petroleum and petrochemical industry, and particularly relates to a turbine oil composition and a preparation method. BACKGROUND

[0002] Turbine oil is composed of base oil and additives, and is mainly used for the lubrication of sliding bearings, reduction gears, speed regulators and hydraulic control systems of turbine and its associated units. With the development of the power industry, supercritical steam turbines, gas turbines and gas-steam combined cycle units have been applied, and the operating conditions of equipment are more severe, and the operating temperature is greatly increased, which leads to rapid oxidation of turbine oil, easy occurrence of oil sludge and paint film, and causes servo valve blockage and bearing shell temperature fluctuation.

[0003] It is generally believed that oil sludge and paint film mainly come from the oxidative degradation products of base oil or antioxidants in turbine oil. Because the oxidative products of turbine oil have relatively large molecular polarity, they have low solubility in oil, and thus are easy to precipitate from the oil and deposit on the metal surface to form paint film. The main method to reduce the paint film problem is to improve the oxidation resistance of the oil, including using highly refined base oil and selecting antioxidants with low sediment generation. The base oil of turbine oil has developed from API class I to class II, class III and class IV. The oxidation stability of turbine oil formulated with API class II, class III or class IV base oil is significantly improved, and the amount of oil sludge generated after oxidation is reduced. However, because the solubility of highly refined base oil for oil sludge and paint film is lower than that of API class I base oil, when the oil deteriorates, the polar oxidative products are not easy to be dissolved by the base oil, and may still precipitate and form oil sludge and paint film.

[0004] API class V base oil refers to other synthetic oils other than class I-IV base oil, including synthetic esters, polyethers and alkyl naphthalenes. Some types of class V base oil molecules have polar functional groups, and have greater solubility for the oxidative products of turbine oil than mineral oil, so a new technology of using class V base oil to reduce the paint film problem of turbine oil has emerged. Patent CN112358907A invents a low paint film lubricating oil containing class V base oil, Fischer-Tropsch synthetic base oil and functional additives. Among them, the class V base oil is diisodecyl phthalate or alkyl naphthalene. High temperature oxidation test shows that the lubricating oil can effectively inhibit the paint film. Another study shows that adding a certain proportion of oil-soluble polyether to the turbine oil formula helps to improve the detergency of turbine oil and effectively inhibit the generation of oil sludge. SUMMARY

[0005] In view of the above problems existing in the prior art, the application provides a turbine oil composition and a preparation method.

[0006] In a first aspect, the present application provides a turbine oil composition, wherein the raw materials of the turbine oil composition comprise an antioxidant, a long carbon chain fatty alcohol and a base oil.

[0007] As a specific embodiment of the present application, the antioxidant is selected from at least one of alkylated phenyl-alpha-naphthylamine, N-phenyl-alpha-naphthylamine, octyl / butyldiphenylamine or 3,5-di-tert-butyl-4-hydroxyphenyl propionic C7-C9 alcohol ester. Preferably, the antioxidant is selected from at least one of Irganox L06, T531, Irganox L57 or Irganox L135.

[0008] More preferably, as a specific embodiment of the present application, the antioxidant comprises T531, Irganox L57 and Irganox L135, and the mass ratio of T531, Irganox L57 and Irganox L135 is preferably 10-15:10-15:10-15. It is believed that T531 has good oxidation life but is prone to sludge; Irganox L57 has a shorter oxidation life than T531 but is less prone to sludge, while L135 has good high-temperature effect and is less prone to sludge; the combination of the three can balance the amount of sludge and oxidation life of the oil.

[0009] More preferably, as a specific embodiment of the present application, the antioxidant is Irganox L06. The present inventors have found that when Irganox L06 is used as the antioxidant in the composition of the present application, the composition has good life and sludge amount, and does not need to be used in combination with other antioxidants, and may even have a negative effect when used in combination with other antioxidants.

[0010] As a specific embodiment of the present application, the kinematic viscosity (40℃) of the long carbon chain fatty alcohol is not greater than 45mm 2 / s, the flash point (open) is not less than 190℃, and the acid value is not greater than 0.05mgKOH / g. Preferably, the long carbon chain fatty alcohol is selected from at least one of 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-hexyl-dodecanol, 2-octyl-dodecanol, 2-hexyl-1-tetradecanol, 2-octyl-1-tetradecanol, tetracosanol or octacosanol.

[0011] Preferably, as a specific embodiment of the present application, the long carbon chain fatty alcohol contains 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-hexyl-dodecanol, 2-octyl-dodecanol, 2-hexyl-1-tetradecanol, 2-octyl-1-tetradecanol, tetracosanol and octacosanol, and the weight ratio of 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-hexyl-dodecanol, 2-octyl-dodecanol, 2-hexyl-1-tetradecanol, 2-octyl-1-tetradecanol, tetracosanol and octacosanol is preferably 0.75-1.2:0.25-0.5:0.5-0.8:0.75-1.6:0.5-0.8:0.75-1.2:0.25-0.4:0.75-1.6. The present inventors have found that the above-mentioned long carbon chain fatty alcohols are compounded to have balanced solubility, flash point and kinematic viscosity, and excellent comprehensive performance. It is believed that alcohols with smaller molecular weight have good solubility for oil paint film, but poor thermal stability and low flash point, and the solubility for paint film decreases as the molecular weight of the alcohol increases, but the thermal stability is better.

[0012] As a specific embodiment of the present application, the base oil is API Group II hydrogenated base oil.

[0013] As a specific embodiment of the present application, the raw material for preparing the turbine oil composition further comprises a metal deactivator, an antirust agent, a demulsifier, and an antifoaming agent.

[0014] As a specific embodiment of the present application, the metal deactivator is selected from at least one of benzotriazole derivatives, toluene triazole derivatives or heterocyclic compounds.

[0015] As a specific embodiment of the present application, the antirust agent is selected from at least one of dodecenyl succinic acid, amino acid derivatives or succinic acid ester derivatives; preferably, at least one of T746, K1031 or Maxwell RN-4800.

[0016] As a specific embodiment of the present application, the demulsifier is a block polyether, preferably at least one of L61 or PE6100.

[0017] As a specific embodiment of the present application, the antifoaming agent is selected from at least one of acrylate polymers, modified silicon or composite silicon type antifoaming agents; preferably, at least one of AMH2, FB130B or 1# composite antifoaming agent.

[0018] As a specific embodiment of the present application, the raw material for preparing the turbine oil composition comprises, in parts by weight

[0019]

[0020] The above raw materials in the present application can be self-made or commercially available, and the present application does not make special limitations thereto.

[0021] In a second aspect, the present application provides a preparation method of a turbine oil composition, comprising the following steps:

[0022] S1: uniformly mixing the antioxidant, long carbon chain fatty alcohol, base oil, optional metal deactivator, optional rust inhibitor and optional demulsifier to obtain a first mixture;

[0023] S2: optionally, adding an antifoaming agent to the first mixture obtained in step S1 and uniformly mixing to obtain the turbine oil composition.

[0024] As a specific embodiment of the present application, in the steps S1 and S2, the mixing mode is independently heated stirring, the stirring speed is 500-700 rpm / min, the heating temperature is independently 50-60℃, and the stirring time is independently 0.5-2h.

[0025] In the step S2, the filtration is to 5-15 microns.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1. The long carbon chain fatty alcohol is applied to the turbine for the first time in the present application, which plays a significant role in inhibiting oil sludge and paint film, and the effect is better than the existing technology of adding synthetic ester, polyether or alkyl naphthalene. The reasonable selection and dosage of the antioxidant and the selection of deep hydrogenation refined base oil in the present application make the turbine oil have excellent oxidation stability; the long chain fatty alcohol has high chemical stability and the chemical bond is not easily broken at high temperature, and at the same time, the alcohol molecules have polarity, which has a very good dissolving effect on the polar oxidation products of the turbine oil, so that the generation of oil sludge and paint film can be avoided; the rust inhibitor and the demulsifier can ensure that the metal parts in the lubricating system are not rusted after the oil contacts with water, and the oil is not seriously emulsified; the antifoaming agent plays a role in inhibiting the generation of foam and quickly defoaming; by adjusting the functional additives, long chain fatty alcohol and base oil, the oil product meets the technical indicators, and the amount of oil sludge and paint film deposition is significantly inhibited.

[0028] 2. The performance of the turbine oil composition obtained in the embodiments of the present application meets the technical index requirements, wherein the paint film tendency index after simulated oxidation of the oil product and the oil sludge amount when the residual value of the Dry-TOST test oxygen bomb attenuates to 25% can reflect the inhibition ability of the turbine oil on the paint film and oil sludge. In the application examples of the present application, the shafting parameters of the oil equipment such as steam turbines and centrifugal compressors are more stable during the application of the turbine oil composition of the present application.

[0029] 3、The additive in the application is a commonly used additive in industrial lubricating oil, the long carbon chain fatty alcohol is a commonly used industrial raw material, which is widely used in metal processing fluid, cosmetics, textile and pharmaceutical industry, and the hydrogenated base oil is a bulk petroleum product, which is convenient to obtain. The preparation method of the composition is simple, the raw materials and preparation cost are low, and the composition can be widely used in steam turbines, gas turbines and industrial turbines, such as centrifugal compressors, fans, smoke machines, centrifugal pumps and the like. DETAILED DESCRIPTION

[0030] The application will be further described below in combination with specific examples, but does not constitute any limitation to the application.

[0031] In the various examples and comparative examples of the application, the information of various reagents used is as follows:

[0032] Antioxidant Irganox L06, BASF Co., Ltd.;

[0033] Antioxidant T531, Jinzhou Shengda Chemical Co., Ltd.;

[0034] Antioxidant Irganox L57, BASF Co., Ltd.;

[0035] Antioxidant Irganox L135, BASF Co., Ltd.;

[0036] Metal deactivator Irgamet 39, BASF Co., Ltd.;

[0037] Metal deactivator T552, Changsha Wangcheng Petrochemical Co., Ltd.;

[0038] Rust inhibitor T746, Beijing Baoguan Chemical Factory;

[0039] Rust inhibitor K1031, Jin's Industrial Co., Ltd.;

[0040] Rust inhibitor RN-4800, Shanghai Yucheng Chemical Co., Ltd.;

[0041] Demulsifier L61, Beijing Xingpu Fine Chemical Technology Development Co., Ltd.;

[0042] Demulsifier PE6100, BASF-YPC Co., Ltd.;

[0043] Antifoaming agent AMH2, BASF Co., Ltd.;

[0044] Antifoaming agent FB130B, Mengqingsheng Additives Trade (Shanghai) Co., Ltd.;

[0045] 2-hexyl-1-decanol, chemical pure,

[0046] 2-octyl-1-decanol, chemical pure,

[0047] 2-hexyl-dodecanol, chemically pure,

[0048] 2-octyl-dodecanol, chemically pure,

[0049] 2-hexyl-1-tetradecanol, chemically pure,

[0050] 2-octyl-1-tetradecanol, chemically pure,

[0051] Tetracosanol, chemically pure,

[0052] Octacosanol, chemically pure,

[0053] Base oil HVI II 6, meeting the quality requirements of API Group II base oil.

[0054] In the examples and comparative examples of the present application, the test methods used are as follows:

[0055] Kinematic viscosity (40℃) / (mm2 / s), tested according to GB / T 265;

[0056] Acid value / (mgKOH / g), tested according to GB / T 7304;

[0057] Emulsion resistance (emulsion up to 3 mL, 54℃) / min, tested according to GB / T 7305;

[0058] Air release value (50℃) / min, tested according to SH / T 0308;

[0059] Foam properties (foam tendency / foam stability) / (mL / mL), tested according to GB / T 12579, values at 24℃, 93.5℃, and then 24℃, respectively;

[0060] Liquid phase rusting (B method), tested according to GB / T 11143;

[0061] Rotating bomb (150℃) / min, tested according to SH / T 0193;

[0062] Filterability tested by dry method / % and wet method / %, respectively, tested according to SH / T 0805;

[0063] Paint film tendency index of simulated oxidized oil, tested according to ASTM D7843;

[0064] Oil sludge amount when the residual value of the Dry-TOST test oxygen bomb attenuates to 25% / (mg / kg), tested according to ASTM D7873.

[0065] Example 1

[0066] This example provides a turbine oil composition and a method of preparation, the details of which are as follows:

[0067] Raw material components for preparation:

[0068] Antioxidant: 0.15 parts of T531, 0.10 parts of Irganox L57, 0.15 parts of Irganox L135;

[0069] Metal deactivator: 0.03 parts of Irgamet 39;

[0070] Rust inhibitor: 0.01 parts of T746, 0.03 parts of K1031;

[0071] Demulsifier: 0.01 parts of L61;

[0072] Antifoam agent: 0.02 parts of AMH2;

[0073] Long carbon chain fatty alcohol: 0.75 parts of 2-hexyl-1-decanol, 0.25 parts of 2-octyl-1-decanol, 0.50 parts of 2-hexyl-1-dodecanol, 1.00 parts of 2-octyl-1-dodecanol, 0.50 parts of 2-hexyl-1-tetradecanol, 0.75 parts of 2-octyl-1-tetradecanol, 0.25 parts of tetracosanol, 1.00 parts of octacosanol;

[0074] Base oil: 94.52 parts of hydrogenated base oil HVI II 6.

[0075] Method of preparation:

[0076] The above-mentioned antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, the temperature is raised to 55°C, the stirring is started with a speed of 600 rpm / min, after 1.5 hours, the antifoam agent is added, the temperature is kept at 55°C, the stirring is continued for 1 hour, and then the turbine oil composition is obtained by filtering with a 10 micron filter.

[0077] Example 2

[0078] This example provides a turbine oil composition and a method of preparation, the details of which are as follows:

[0079] Raw material components for preparation:

[0080] Antioxidant: 0.15 parts of T531, 0.10 parts of Irganox L57, 0.15 parts of Irganox L135;

[0081] Metal deactivator: 0.03 parts of Irgamet 39;

[0082] Rust inhibitor: 0.02 parts of T746;

[0083] Demulsifier: 0.01 part L61;

[0084] Antifoaming agent: 0.02 part AMH2;

[0085] Long carbon chain fatty alcohol: 1.20 parts 2-hexyl-1-decanol, 0.40 parts 2-octyl-1-decanol, 0.80 parts 2-hexyl-1-dodecanol, 1.60 parts 2-octyl-1-dodecanol, 0.80 parts 2-hexyl-1-tetradecanol, 1.20 parts 2-octyl-1-tetradecanol, 0.40 parts tetracosanol, 1.60 parts octacosanol;

[0086] Base oil: 91.52 parts hydrogenated base oil HVI II 6.

[0087] Preparation method:

[0088] The above antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, heated to 55°C, the stirring is started, the speed is 600 rpm / min, maintained for 1.5 hours, then the antifoaming agent is added, kept at 55°C, continues to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0089] Example 3

[0090] This example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0091] Preparation raw material components:

[0092] Antioxidant: 0.15 parts T531, 0.10 parts Irganox L57, 0.15 parts Irganox L135;

[0093] Metal deactivator: 0.03 parts T552;

[0094] Rust inhibitor: 0.02 parts K1031;

[0095] Demulsifier: 0.01 parts PE6100;

[0096] Antifoaming agent: 0.02 parts FB130B;

[0097] Long carbon chain fatty alcohol: 1.00 parts 2-hexyl-1-decanol, 0.50 parts 2-octyl-1-decanol, 0.50 parts 2-hexyl-1-dodecanol, 0.75 parts 2-octyl-1-dodecanol, 0.50 parts 2-hexyl-1-tetradecanol, 0.75 parts 2-octyl-1-tetradecanol, 0.25 parts tetracosanol, 0.75 parts octacosanol;

[0098] Base oil: 94.52 parts of hydrogenated base oil HVI II 6.

[0099] Preparation method:

[0100] The above antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, heated to 55°C, the stirring is started, the speed is 600 rpm / min, maintained for 1.5 hours, then the antifoaming agent is added, kept at 55°C, continues to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0101] Example 4

[0102] This example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0103] Preparation of raw material components:

[0104] Antioxidant: 0.30 parts of Irganox L06;

[0105] Metal deactivator: 0.03 parts of T552;

[0106] Rust inhibitor: 0.01 parts of T746, 0.03 parts of RN-4800;

[0107] Demulsifier: 0.01 parts of L61;

[0108] Antifoaming agent: 0.02 parts of AMH2;

[0109] Long carbon chain fatty alcohol: 0.75 parts of 2-hexyl-1-decanol, 0.25 parts of 2-octyl-1-decanol, 0.50 parts of 2-hexyl-1-dodecanol, 1.00 parts of 2-octyl-1-dodecanol, 0.50 parts of 2-hexyl-1-tetradecanol, 0.75 parts of 2-octyl-1-tetradecanol, 0.25 parts of tetracosanol, 1.00 parts of octacosanol;

[0110] Base oil: 94.60 parts of hydrogenated base oil HVI II 6.

[0111] Preparation method:

[0112] The above antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, heated to 55°C, the stirring is started, the speed is 600 rpm / min, maintained for 1.5 hours, then the antifoaming agent is added, kept at 55°C, continues to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0113] Example 5

[0114] This example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0115] Raw material components for preparation:

[0116] Antioxidant: 0.30 parts of Irganox L06;

[0117] Metal deactivator: 0.03 parts of Irgamet 39;

[0118] Rust inhibitor: 0.01 parts of T746, 0.03 parts of RN-4800;

[0119] Demulsifier: 0.01 parts of PE6100;

[0120] Antifoaming agent: 0.02 parts of AMH2;

[0121] Long carbon chain fatty alcohol: 1.20 parts of 2-hexyl-1-decanol, 0.40 parts of 2-octyl-1-decanol, 0.80 parts of 2-hexyl-1-dodecanol, 1.60 parts of 2-octyl-1-dodecanol, 0.80 parts of 2-hexyl-1-tetradecanol, 1.20 parts of 2-octyl-1-tetradecanol, 0.40 parts of tetracosanol, 1.60 parts of octacosanol;

[0122] Base oil: 91.60 parts of hydrogenated base oil HVI II 6.

[0123] Preparation method:

[0124] The above-mentioned antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, heated to 55°C, the stirring is started with a speed of 600 rpm / min, after 1.5 hours, the antifoaming agent is added, the temperature is kept at 55°C, the stirring is continued for 1 hour, then a 10 micron filter is used to filter to obtain the turbine oil composition.

[0125] Example 6

[0126] The present example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0127] Raw material components for preparation:

[0128] Antioxidant: 0.20 parts of Irganox L06, 0.10 parts of T531, 0.10 parts of Irganox L57;

[0129] Metal deactivator: 0.03 parts of Irgamet 39;

[0130] Rust inhibitor: 0.04 parts of K1031;

[0131] Demulsifier: 0.01 parts of L61;

[0132] Antifoaming agent: 0.02 parts of FB130B;

[0133] Long carbon chain fatty alcohol: 0.75 parts of 2-hexyl-1-decanol, 0.25 parts of 2-octyl-1-decanol, 0.50 parts of 2-hexyl-1-dodecanol, 1.00 part of 2-octyl-1-dodecanol, 0.50 parts of 2-hexyl-1-tetradecanol, 0.75 parts of 2-octyl-1-tetradecanol, 0.25 parts of lignoceryl alcohol, 1.00 part of octacosanyl alcohol;

[0134] Base oil: 94.50 parts of hydrogenated base oil HVI II 6.

[0135] Preparation method:

[0136] The above antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil are added into a blending tank with stirring, heated to 55°C, the stirring is started, the speed is 600 rpm / min, maintained for 1.5 hours, then the antifoaming agent is added, kept at 55°C, continued to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0137] Example 7

[0138] The present example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0139] Preparation raw material components:

[0140] Antioxidant: 0.30 parts of Irganox L06, 0.10 parts of Irganox L57, 0.10 parts of Irganox L135;

[0141] Metal deactivator: 0.03 parts of Irgamet 39;

[0142] Rust inhibitor: 0.01 parts of T746, 0.03 parts of RN-4800;

[0143] Demulsifier: 0.01 parts of L61;

[0144] Antifoaming agent: 0.02 parts of FB130B;

[0145] Long carbon chain fatty alcohol: 1.00 parts of 2-hexyl-1-decanol, 0.50 parts of 2-octyl-1-decanol, 0.50 parts of 2-hexyl-1-dodecanol, 0.75 parts of 2-octyl-1-dodecanol, 0.50 parts of 2-hexyl-1-tetradecanol, 0.75 parts of 2-octyl-1-tetradecanol, 0.25 parts of lignoceryl alcohol, 0.75 parts of octacosanyl alcohol;

[0146] Base oil: 94.40 parts of hydrogenated base oil HVI II 6.

[0147] Preparation method:

[0148] The above antioxidant, metal deactivator, rust inhibitor, demulsifier, long carbon chain fatty alcohol and base oil were added into a blending tank with stirring, heated to 55°C, the stirring was started with a speed of 600 rpm / min, maintained for 1.5 hours, then the antifoam agent was added, kept at 55°C, continued to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0149] Comparative Example 1

[0150] This comparative example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0151] Preparation of raw material components:

[0152] Antioxidant: 0.15 parts of T531, 0.10 parts of Irganox L57, 0.15 parts of Irganox L135;

[0153] Metal deactivator: 0.03 parts of Irgamet 39;

[0154] Rust inhibitor: 0.02 parts of T746;

[0155] Demulsifier: 0.01 parts of L61;

[0156] Antifoam agent: 0.02 parts of AMH2;

[0157] Base oil: 99.52 parts of hydrogenated base oil HVI II 6.

[0158] Preparation method:

[0159] The above antioxidant, metal deactivator, rust inhibitor, demulsifier and base oil were added into a blending tank with stirring, heated to 55°C, the stirring was started with a speed of 600 rpm / min, maintained for 1.5 hours, then the antifoam agent was added, kept at 55°C, continued to stir for 1 hour, then filtered with a 10 micron filter to obtain the turbine oil composition.

[0160] Comparative Example 2

[0161] This comparative example provides a turbine oil composition and a preparation method, the specific details are as follows:

[0162] Preparation of raw material components:

[0163] Antioxidant: 0.30 parts of Irganox L06;

[0164] Metal deactivator: 0.03 parts of T552;

[0165] Rust inhibitor: 0.01 parts of T746, 0.03 parts of RN-4800;

[0166] Demulsifier: 0.02 part of L61;

[0167] Antifoaming agent: 0.02 part of AMH2;

[0168] Base oil: 99.60 parts of hydrogenated base oil HVI II 6.

[0169] Preparation method:

[0170] The above antioxidant, metal deactivator, rust inhibitor, demulsifier and base oil were added into a blending tank with stirring, and the temperature was raised to 55°C. The stirring was started at a speed of 600 rpm / min, and maintained for 1.5 hours. Then the antifoaming agent was added, and the temperature was kept at 55°C. After stirring for another 1 hour, the turbine oil composition was obtained by filtration using a 10 micron filter.

[0171] Comparative Examples 1-2

[0172] The turbine oil composition was prepared by using basically the same formulation and method as in Example 1, except that in Comparative Example 1, 5 parts of 2-hexyl-1-decanol was used as the long carbon chain fatty alcohol, and in Comparative Example 2, 5 parts of octacosanol was used as the long carbon chain fatty alcohol.

[0173] The raw material components used in the preparation of Examples 1-7, Comparative Examples 1-2 and Comparative Examples 1-2 were compared as shown in Table 1:

[0174] Table 1

[0175]

[0176]

[0177] Table 2 Physical and chemical properties of base oil HVI II 6

[0178]

[0179]

[0180] The turbine oil compositions prepared in Examples 1-7, Comparative Examples 1-2 and Comparative Examples 1-2 were tested, and the results were as follows:

[0181] Table 3 Test results of turbine oil compositions of Examples 1-7, Comparative Examples 1-2 and Comparative Examples 1-2

[0182]

[0183]

[0184] The performance of the turbine oil compositions prepared in Examples 1-7 and Comparative Examples 1-2 meets the technical index requirements. Example 5 is the best, antioxidant L06 has good high-temperature oxidation resistance, has good service life and sludge amount when used alone, and has no need to be used in combination with other antioxidants, and sometimes has a negative effect when used in combination with other antioxidants.

[0185] The paint film tendency index after simulated oxidation of the oil in Table 3 and the sludge amount when the residual value of the Dry-TOST test oxygen bomb is attenuated to 25% can reflect the inhibition ability of the turbine oil on paint film and sludge. As shown in the test results of the examples in the table, the paint film tendency index after simulated oxidation of Examples 1-3 is lower than that of Comparative Example 1, the sludge generation amount of Examples 1-3 in the Dry-TOST test is significantly reduced compared with Comparative Example 1, the paint film tendency index after simulated oxidation of Examples 4-5 is lower than that of Comparative Example 2, and the sludge generation amount of Examples 4-5 in the Dry-TOST test is lower than that of Comparative Example 2. At the same time, the paint film tendency index after simulated oxidation of Examples 6-7 and the sludge generation amount in the Dry-TOST test are lower than those of Comparative Example 1 and Comparative Example 2. Therefore, the possibility of generating sludge and paint film problems in the use of Examples 1-7 is reduced, which helps to improve the stability of equipment operation and achieves good technical effects.

[0186] As can be seen from Examples 1 and Comparative Examples 1-2, the long-chain fatty alcohol alone has poor effect, and the use of several long-chain fatty alcohols in combination balances the solubility, flash point and kinematic viscosity, and the turbine oil composition obtained has good solubility and good thermal stability.

[0187] In summary, the turbine oil composition of the present application has excellent oxidation stability by reasonable selection and dosage of antioxidants, and selection of deep hydrorefined base oil; the long-chain fatty alcohol has high chemical stability and the chemical bond is not easily broken at high temperature, and at the same time, the alcohol molecule has polarity and has a very good dissolving effect on the polar oxidation products of the turbine oil, which can avoid the generation of sludge and paint film; the rust inhibitor and demulsifier contained therein can ensure that the metal parts in the lubricating system are not rusted after the oil contacts water, and the oil does not have serious emulsification phenomenon; the antifoaming agent plays a role in inhibiting the generation of foam and quickly defoaming; by blending the functional additives, long-chain fatty alcohol and base oil, the oil meets the technical index requirements, and the amount of sludge and paint film deposition is significantly inhibited.

[0188] Any numerical values recited herein include all values from the lower value and up to the upper value. Values that are recited herein also include values that are "framed" by the recited values. For example, if a concentration range is stated as 1% to 50%, it is intended that values such as 25%, 30%, and 35% are expressly enumerated. All integer values are used "open ended" such that "50%" really means "50% to 50%". The same principle applies to ranges recited as being "between" two values. Discrete, non-integer values can be assumed within the stated ranges. These are only a few of the specific examples that are given. In the application, all possible combinations of numerical values between the lowest value and the highest value enumerated, are to be considered to be expressly stated in this application.

[0189] It should be noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present application. While the application has been described with reference to exemplary embodiments, it is understood that the words that have been used herein are words of description, and that they are being used under the descriptive and explanatory privilege intended to aid in the understanding of the application. Modifications can be made to the application in light of the teachings herein, and other steps can be added or deleted thereof without departing from the intended scope of the application. Although the application has been described with reference to particular means, materials and embodiments, from the foregoing description, one skilled in the art can effect a wide variety of modifications to the preferred embodiments of the application without departing from the scope of the intended application. While the preferred embodiments of the application have been made this description is illustrative and not restrictive. Various modifications can become apparent to those skilled in the art, and the present application is to be limited only by the scope of the appended claims.

Claims

1. A turbine oil composition characterized in that, The raw materials of the turbine oil composition include an antioxidant, a long carbon chain fatty alcohol and a base oil; the base oil is an API II type hydrogenated base oil; The long carbon chain fatty alcohol is a mixture of 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-hexyl-dodecanol, 2-octyl-dodecanol, 2-hexyl-1-tetradecanol, 2-octyl-1-tetradecanol, tetracosanol and octacosanol; the weight ratio of 2-hexyl-1-decanol, 2-octyl-1-decanol, 2-hexyl-dodecanol, 2-octyl-dodecanol, 2-hexyl-1-tetradecanol, 2-octyl-1-tetradecanol, tetracosanol and octacosanol is 0.75-1.2:0.25-0.5:0.5-0.8:0.75-1.6:0.5-0.8:0.75-1.2:0.25-0.4:0.75-1.6; The acid value of the long carbon chain fatty alcohol is not more than 0.05 mgKOH / g.

2. The turbine oil composition of claim 1, wherein, The antioxidant is at least one selected from alkylated phenyl-alpha-naphthylamine, N-phenyl-alpha-naphthylamine, octyl / butyldiphenylamine or 3,5-di-tert-butyl-4-hydroxyphenyl propionic C7-C9 alcohol ester.

3. The turbine oil composition of claim 2, wherein, The antioxidant is at least one selected from Irganox L06, T531, Irganox L57 or Irganox L135.

4. The turbine oil composition of any of claims 1-3, characterized in that, The raw materials of the turbine oil composition further include a metal deactivator, a rust inhibitor, a demulsifier and an antifoaming agent.

5. The turbine oil composition according to claim 4, characterized in that, The metal deactivator is at least one selected from heterocyclic compounds.

6. The turbine oil composition according to claim 4, characterized in that, The metal deactivator is at least one selected from benzotriazole derivatives, toluene benzotriazole derivatives.

7. The turbine oil composition according to claim 4, characterized in that, The rust inhibitor is at least one selected from dodecenyl succinic acid, amino acid derivatives or succinic acid ester derivatives.

8. The turbine oil composition of claim 7, wherein, The rust inhibitor is at least one selected from T746, K1031 or Maxwell RN-4800.

9. The turbine oil composition according to claim 4, characterized in that, The demulsifier is a block polyether.

10. The turbine oil composition according to claim 4, characterized in that, The demulsifier is at least one selected from L61 or PE6100.

11. The turbine oil composition according to claim 4, characterized in that, The antifoaming agent is at least one selected from acrylate polymers, modified silicon or composite silicon type antifoaming agents.

12. The turbine oil composition according to claim 4, characterized in that, The antifoaming agent is at least one selected from AMH2, FB130B or 1# composite antifoaming agent.

13. The turbine oil composition according to claim 4, characterized in that, The raw materials for preparing the turbine oil composition include, in parts by weight 0.3-1.0 parts of an antioxidant, 0.02-0.1 parts of a metal deactivator, 0.02-0.05 parts of a rust inhibitor, 0.01-0.1 parts of a demulsifier, 0.005-0.05 parts of an antifoaming agent, 3-10 parts of a long carbon chain fatty alcohol, 88-98 parts of a hydrogenated base oil; The total parts by weight of the raw materials for preparing the turbine oil composition is 100 parts.

14. A process for the preparation of a turbine oil composition as defined in any of claims 1 to 13, characterized in that The method comprises the following steps: S1: uniformly mixing the antioxidant, the long carbon chain fatty alcohol, the base oil, the optional metal deactivator, the optional rust inhibitor and the optional demulsifier to obtain a first mixture; S2: optionally adding the antifoaming agent to the first mixture obtained in step S1 and uniformly mixing to obtain the turbine oil composition.

15. The method of claim 14, wherein, In steps S1 and S2, the mixing mode is independently heating and stirring.

16. The method of claim 15, wherein, The stirring speed of the heating stirring is 500-700 rpm, the heating temperature is independently 50-60℃, and the stirring time is independently 0.5-2h.

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