CN114958462A - Synthetic hydraulic oil for wind power generation hydraulic system and preparation method thereof - Google Patents
Synthetic hydraulic oil for wind power generation hydraulic system and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- C—CHEMISTRY; METALLURGY
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/66—Hydrolytic stability
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to the technical field of hydraulic oil for a hydraulic system, in particular to synthetic hydraulic oil for a wind power generation hydraulic system and a preparation method thereof. The synthetic hydraulic oil comprises a)50 wt% or more of coal-made oil base oil, the kinematic viscosity of which at 100 ℃ is not less than 2.0mm 2 S; b)0.1 to 1 wt% of a pour point depressant.The synthetic hydraulic oil has excellent viscosity-temperature performance, the viscosity index of the synthetic hydraulic oil is close to 175, and the kinematic viscosity of the synthetic hydraulic oil at 40 ℃ is 28-36 mm 2 In the range of/s, the hydraulic system of the wind generating set is ensured to keep good performances of lubrication, cooling and the like in the temperature change range of minus 50 ℃ to about 55 ℃, and the defect of performance of the hydraulic system caused by the change of the system temperature when the wind generating set works in all weather is avoided. In addition, the synthetic hydraulic oil does not use or use a small amount of viscosity index improver, the viscosity-temperature performance of the hydraulic oil is improved, the shearing performance of the hydraulic oil is not sacrificed, and the longer service life is ensured.
Description
Technical Field
The invention relates to the technical field of hydraulic oil for a hydraulic system, in particular to synthetic hydraulic oil for a wind power generation hydraulic system and a preparation method thereof.
Background
The main functions of the hydraulic system of the wind generating set are braking (high and low speed shaft and yaw braking), variable pitch control and yaw control. The working power of the hydraulic system is a hydraulic pump, the transmission medium is hydraulic oil, the control element is an electric valve, and the pitch variation of the blades is realized by changing the radial motion of a piston rod of the oil cylinder into the circular motion of the blades. Compared with the traditional hydraulic system, the wind power generation hydraulic system has the characteristics of difficult oil change, most of precision elements, large environmental temperature difference and the like. The concrete expression is as follows: oil is supplemented and replaced by lifting the oil to an engine room with the height of 80m by a small crane; because the hydraulic element for the fan is precise and has no part, and the fan is generally not provided with an oil filter trolley on site, once impurities appear, the flow of an oil path of hydraulic equipment is easy to reduce and even block, and in case of serious conditions, some sealing mechanical devices are abraded to cause failure; the hydraulic variable pitch control works almost all day long, and the working temperature is between 45 ℃ below zero and 55 ℃. Therefore, the synthetic hydraulic oil for the traditional hydraulic system cannot completely meet the requirements of the hydraulic system of the wind generating set, and particularly in severe cold seasons, when the working temperature of the hydraulic oil is reduced to a certain degree, the viscosity of oil products can be increased, so that the motion resistance of hydraulic parts is increased, and the problems that the pitch of 3 blades of a hydraulic pitch-variable fan is not synchronous or the pitch speed is slow frequently caused by low temperature and the like are often caused. In severe cases, large-area shutdown accidents easily occur in wind fields, and meanwhile, the power grid is greatly impacted.
In view of the above problems, some approaches have been made to solve low freezing point base oils such as synthetic base oils including polyalphaolefins and naphthenic oils. However, the cost of synthetic base oil such as poly-alpha-olefin is too high, which can reach about 3 times of mineral oil, and the economic benefit is poor; the low-freezing point base oil has a low viscosity index, and a large amount of viscosity index improver is required to be added to improve the viscosity-temperature performance, so that the shearing performance of the low-freezing point base oil is reduced, and the service life of the oil product is greatly reduced.
Disclosure of Invention
Aiming at the technical problems, the invention provides wind power hydraulic oil with both cost and performance, wherein the base oil is coal-made oil base oil, and the performance of the base oil can be comparable to that of synthetic oil phase.
Specifically, a first aspect of the present invention provides a synthetic hydraulic oil comprising: a)50 wt% or more of a coal-based oil base oil having a kinematic viscosity at 100 ℃ of not less than 2.0mm 2 S; b) 0.1-1 wt% of a pour point depressant; c) 1-5 wt% of a viscosity index improver, wherein the viscosity index improver is an acrylate polymer; the PSSI of the acrylate polymer is not higher than 50.
The coal-to-liquid base oil adopted in the invention is a hydrocarbon compound which is obtained by completely gasifying coal and converting the coal into a mixture of carbon monoxide, methane and hydrogen through reaction of the coal with oxygen and water vapor at a high temperature and then synthesizing the mixture under the action of an iron-based or cobalt-based catalyst, wherein the main component of the hydrocarbon compound is isoparaffin.
Further, the content of the coal-to-liquids base oil is 70% or more.
Further, the number of carbon atoms of the coal-to-liquids base oil is C7-C60.
The carbon atom number of the coal-to-oil base oil can be adjusted 13 C-NMR、 1 H-NMR was combined for determination by testing.
The coal-to-liquid base oil adopted in the invention has a higher viscosity index, so that the use amount of the viscosity index improver in the synthetic hydraulic oil can be reduced, and even the viscosity index improver can not be adopted. The term "viscosity index" refers to the degree to which the viscosity of a fluid changes with temperature, and a higher viscosity index indicates that the viscosity of the fluid is less affected by temperature and the viscosity is less sensitive to temperature. The viscosity index in the present invention can be obtained by testing according to national standard GB/T1995 "calculation method of viscosity index of Petroleum products".
Further, the kinematic viscosity of the base oil of the coal-based oil at 100 ℃ is 2.0-13 mm 2 /s。
Further, the kinematic viscosity of the coal-to-liquids base oil at 100 ℃ is 2.8-10 mm 2 /s。
Further, the method can be used for preparing a novel liquid crystal displayThe kinematic viscosity of the coal-to-liquids base oil at 40 ℃ is 6.5-80 mm 2 S; further, the kinematic viscosity of the coal-to-liquids base oil at 40 ℃ is 10-55 mm 2 S; further preferably, the kinematic viscosity of the coal-to-liquids base oil at 40 ℃ is 28-36 mm 2 /s。
The term "kinematic viscosity" in the present invention measures a physical quantity of the magnitude of the flow resistance inside a fluid under the action of gravity, and is classified into kinematic viscosity at 100 ℃ and kinematic viscosity at 40 ℃ depending on the temperature at the time of test. The kinematic viscosity at 100 ℃ and the kinematic viscosity at 40 ℃ in the invention are obtained by testing according to national standard GB/T265 petroleum product kinematic viscometry and kinematic viscosity calculation. According to the invention, the number of carbon atoms, the kinematic viscosity and the like of the coal-to-liquid oil are regulated, so that the high viscosity index is obtained, the stability is better at a lower temperature, and the problems of the increase of the viscosity of hydraulic oil, the increase of the kinematic resistance of hydraulic parts and the like caused by the temperature reduction in the environment are effectively avoided.
The base oil for the coal-to-liquid oil has lower pour point and small evaporation loss, and can meet the requirements of blending high-performance lubricating oil such as hydraulic oil, gear oil and the like.
Further, the pour point of the coal-to-liquids base oil is not higher than-30 ℃.
Further, the pour point of the coal-to-liquids base oil is not higher than-35 ℃.
Furthermore, the pour point of the coal-to-liquids base oil is not higher than-40 ℃.
The term "pour point" as used herein refers to the lowest temperature at which a cooled hydraulic fluid sample can flow under specified test conditions, the lower the pour point, the better the low temperature flow of the hydraulic fluid. The pour point in the invention is measured according to the national standard GB/T3536 "Criflan open cup method for measuring flash point and ignition point of petroleum products".
The coal-to-liquids base oil adopted in the invention has lower contents of sulfur, nitrogen, heavy metal and aromatic hydrocarbon and higher stability. Further preferably, the sulfur content in the coal-to-liquids base oil is not higher than 0.05 wt%; still more preferably, the sulfur content in the coal-to-liquids base oil is not higher than 0.01 wt%; more preferably, the sulfur content in the base oil of coal-based oil is not higher than 0.005 wt%, and still more preferably, the result is "not detected" when the detection is performed according to the industry standard SH/T0689.
The synthetic hydraulic oil can be used as base oil by adopting one coal oil, and can also be used as base oil by adopting two or more coal oils with different characteristics after being mixed according to a certain proportion.
In some embodiments, the coal-based oil base oil comprises a mixture of two coal-based oils having carbon numbers of C7-C28 and C9-C50; further, the kinematic viscosity of the mixture of the coal-based oil at 40 ℃ is 28-36 mm 2 /s。
Further, the kinematic viscosity of the coal-to-oil base oil at 100 ℃ is 2.0-5 mm 2 The oil base oil A is prepared from coal and has a kinematic viscosity of 5-13 mm at 100 DEG C 2 And/s coal-to-liquids base oil B.
Further, the kinematic viscosity of the coal-to-oil base oil at 100 ℃ is 2.8-4 mm 2 The oil base oil A prepared from coal and having a kinematic viscosity of 5-8 mm at 100 DEG C 2 And/s coal-to-liquids base oil B.
Further, the ratio of the coal-to-liquids base oil A to the coal-to-liquids base oil B is 10-20 parts by weight of the coal-to-liquids base oil A and 70-90 parts by weight of the coal-to-liquids base oil B.
Further, the kinematic viscosity of the base oil A for the coal-to-liquids oil at 100 ℃ is 2.8-3.2 mm 2 (s) kinematic viscosity at 40 ℃ of 11-12 mm 2 (ii) a viscosity index of 120-125, a pour point of-39 to-45 ℃, and a flash point of 202-218 ℃; the kinematic viscosity of the base oil B of the coal-to-liquids oil at 100 ℃ is 6-7 mm 2 (s) a kinematic viscosity at 40 ℃ of 32 to 34mm 2 The viscosity index is 142-147 per second, the pour point is-39 to-45 ℃, and the flash point is 242-258 ℃.
The kerosene base oil of the present application may be commercially available products including, but not limited to, ICCSYN 3 and ICCSYN 6 from shanxi' an taixing lubricating oil ltd.
The applicant finds that when coal-based oil with specific parameters such as kinematic viscosity, viscosity index and the like is adopted as base oil in the process of completing the invention, the obtained synthetic hydraulic oil has excellent viscosity-temperature performance, and particularly has kinematic viscosity of 2.8-3.2 mm at 100 DEG C 2 The kinematic viscosity of the oil prepared from coal at 100 ℃ is 6-7 mm 2 And/s are mixed according to a specific proportion, and then the low-temperature stability of the synthetic oil is further improved when the synthetic oil is compounded with components such as a specific polyacrylate viscosity index improver, a specific acrylate pour point depressant, a specific defoaming agent and the like, so that the synthetic oil can be widely applied to a high-precision wind power generation hydraulic system and can stably work in a cold season.
The pour point depressant disclosed by the invention is a component which is beneficial to reducing the freezing point of hydraulic oil, refining wax crystals and improving the flow performance of the hydraulic oil at low temperature. The concrete components of the pour point depressant are not particularly limited in the present invention, and include, but are not limited to, polyacrylates, alkyl naphthalene compounds, and the like, such as the VISCOPLEX series of Woodbis GmbH (China) investment Limited.
In some preferred embodiments, in order to provide better stability and longer service life for the synthetic hydraulic oil of the present invention, the synthetic hydraulic oil of the present invention further comprises 0.4 to 2 wt% of a multifunctional additive.
Furthermore, the multifunctional additive is an antiwear hydraulic oil multifunctional additive and is prepared by blending multiple additives such as an antioxidant, an antiwear agent, an antirust agent and the like.
Further, the typical value of kinematic viscosity of the multifunctional additive at 40 ℃ is 40-80 mm 2 /s。
Further, the multifunctional additive has a kinematic viscosity at 40 ℃ of typically 45mm 2 /s。
Further, the multifunctional additive has 12.0-18.0 wt% of sulfur and 0.5-1.2 wt% of phosphorus; further, the multifunctional additive has 13.5-17.3 wt% of sulfur and 0.86-1.12 wt% of phosphorus.
By using the multifunctional additive, the synthetic hydraulic oil has good oxidation resistance and rust resistance, better thermal stability and hydrolytic stability, good filterability and outstanding wear resistance, can prevent the abrasion of a hydraulic pump and other elements, and prolongs the service life of a wind power generation hydraulic system.
The specific choice of the multifunctional additive is not particularly limited in this application and includes, but is not limited to, Yafton's Hitec 525 and the like.
In some preferred embodiments, in order to further improve the shear resistance and low-temperature performance of the synthetic hydraulic oil, the synthetic hydraulic oil further comprises 1-5 wt% of a viscosity index improver.
Further, the viscosity index improver is an acrylate polymer.
Further, the PSSI of the acrylate polymer is not higher than 50.
The term "PSSI" as used herein refers to the permanent shear stability index, which is the amount of irreversible viscosity loss that occurs in hydraulic fluids during operation of a hydraulic system. The PSSI of the present invention is not greater than 50 and is the value of a parameter measured at 10.0% ingredient dissolved in 100N mineral oil and ultrasonically sheared using ASTM D5621 test method.
Furthermore, tests carried out according to DIN 51382 give a typical value of 15 for the shear index (P-SSI) after 250 cycles.
Further, the acrylic polymer has a kinematic viscosity at 100 ℃ of 1500 to 1700mm 2 /s。
The specific type of the viscosity index improver is not particularly limited in the present invention, and includes, but is not limited to, VISCOPLEX 8-409, VISCOPLEX 3-200, VISCOPLEX 7-303, and the like, from german sey (china) investment limited.
In order to make the synthetic hydraulic oil of the invention resistant to outgassing and demulsification, in some preferred embodiments, the synthetic hydraulic oil of the invention further comprises 50 to 2000ppm of a defoamer. The selection of the specific type of the defoaming agent in the present invention is not particularly limited, and includes, but is not limited to, polyacrylate type defoaming agents, such as Mobilad C402 from ExxonMobil.
As a preferred embodiment, the pour point of the synthetic hydraulic fluid of the present invention is not higher than-25 ℃.
Further, the pour point of the synthetic hydraulic oil is not higher than-40 ℃.
Further, the pour point of the synthetic hydraulic oil is not higher than-45 ℃.
Further, the pour point of the synthetic hydraulic oil is not higher than-50 ℃.
Further, the Brookfield viscosity of the synthetic hydraulic oil at-40 ℃ is not higher than 25000 cps.
Further, the Brookfield viscosity of the synthetic hydraulic oil at-40 ℃ is not higher than 20000 cps.
Further, the Brookfield viscosity of the synthetic hydraulic oil at-40 ℃ is not higher than 15000 cps.
Further, the Brookfield viscosity of the synthetic hydraulic oil at-40 ℃ is not higher than 12000 cps.
Further, the kinematic viscosity of the synthetic hydraulic oil at 40 ℃ is 28-34 mm 2 /s。
Further, the viscosity index of the synthetic hydraulic oil is 150-190.
The second invention of the present invention provides a method for preparing the synthetic hydraulic oil as described above, which comprises the steps of: adding the raw materials into a mixing container according to the proportion, and then stirring and mixing for 1-2 hours at 55-65 ℃ to obtain the composite material.
A third aspect of the invention provides the use of a synthetic hydraulic oil as described above, for a wind power hydraulic system.
Compared with the prior art, the synthetic hydraulic oil for the wind power generation hydraulic system has the following beneficial effects Fruit (A. a. b. d. b：
(1) The synthetic hydraulic oil has excellent viscosity-temperature performance, the viscosity index of the synthetic hydraulic oil is close to 175, and the kinematic viscosity of the synthetic hydraulic oil at 40 ℃ is 28-36 mm 2 Within the range of/s, the hydraulic system of the wind generating set is ensured to keep good performances of lubrication, cooling and the like within the temperature change range of minus 50 ℃ to about 55 ℃, and the phenomenon that the hydraulic system of the wind generating set keeps good lubrication, cooling and the like is avoidedWhen the wind power generation equipment works in all weather, the performance of a hydraulic system is insufficient due to the change of the system temperature.
(2) The synthetic hydraulic oil has lower pour point (the pour point is lower than minus 50 ℃) and Brookfield viscosity (lower than 11000cps), can still keep good fluidity at the temperature of minus 50 ℃ or so, and effectively avoids the problems that when a wind power generation hydraulic system works in severe cold seasons, the viscosity of the hydraulic oil is increased, the movement resistance of hydraulic parts is increased, a hydraulic variable pitch fan frequently has asynchronous variable pitch of 3 blades or the variable pitch speed is slow and the like due to low temperature.
(3) The synthetic hydraulic oil does not use or use a small amount of viscosity index improver, the shearing performance of the synthetic hydraulic oil is not sacrificed when the viscosity-temperature performance of the hydraulic oil is improved, the synthetic hydraulic oil still can keep low irreversible viscosity loss in the using process, and the service life of the synthetic hydraulic oil is ensured to be longer.
(4) The synthetic hydraulic oil has little contents of heavy metal, nitrogen, sulfur and other components, almost zero content and no obvious impurities, effectively avoids the problems of flow reduction and blockage of an oil way of hydraulic equipment and abrasion, failure and the like of a sealing mechanical device, and is widely applied to more precise components and systems.
(5) The synthetic hydraulic oil disclosed by the invention adopts the compounded coal oil as the base oil, does not adopt high-production-cost synthetic base oil such as poly-alpha olefin and the like, realizes the excellent comprehensive performance, obviously reduces the cost and has obvious economic benefits.
Detailed Description
The technical features of the technical solutions provided by the present invention will be further clearly and completely described below with reference to the specific embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The synthetic hydraulic oil is prepared by adding the components into a blending container according to the proportion and stirring for about 1.5 hours at the temperature of 60 ℃.
Example 1: the embodiment provides synthetic hydraulic oil for a wind power generation hydraulic system, which is prepared from the following raw materials in percentage by mass: 16.08 parts of coal-made oil base oil A, 80 parts of coal-made oil base oil B, 1.0 part of hydraulic oil multifunctional additive, 2.5 parts of polyacrylate viscosity index improver, 0.4 part of polyacrylate pour point depressant and 0.02 part of polyacrylate defoamer.
Wherein the coal-to-liquids base oil A has typical physicochemical parameters as shown in the following Table 1:
TABLE 1
| Item of parameter | Test results | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Color (Saebert color number) | +30 | GB/T3555 |
| Density (20 ℃ C.), g/m 2 | 0.8077 | GB/T1884 |
| Kinematic viscosity (40 ℃), mm 2 /s | 11.29 | GB/T265 |
| Kinematic viscosity (100 ℃ C.), mm 2 /s | 2.998 | GB/T265 |
| Viscosity index | 123 | GB/T1995 |
| Flash point (open mouth),. degree.C | 210 | GB/T3536 |
| Pour point, DEG C | -42 | GB/T3535 |
| Sulfur content (mg/kg) | Undetected | SH/T0689 |
The coal-to-liquids base oil B has typical physicochemical parameters as shown in table 2 below:
TABLE 2
| Item of parameter | Test results | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Color (Saebert color number) | +30 | GB/T3555 |
| Density (20 ℃ C.), g/m 2 | 0.8203 | GB/T1884 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 33.11 | GB/T265 |
| Kinematic viscosity (100 ℃ C.), mm 2 /s | 6.266 | GB/T265 |
| Viscosity index | 144 | GB/T1995 |
| Flash point (open mouth),. degree.C | 249 | GB/T3536 |
| Pour point, DEG C | -42 | GB/T3535 |
| Sulfur content (mg/kg) | Not detected out | SH/T0689 |
The multifunctional hydraulic oil additive is HITEC 525, the acrylate pour point depressant is VISCOPLEX1-180, and the polyacrylate defoamer is Mobilad C402; the polymethacrylate viscosity index improver has typical physicochemical parameters as shown in the following table 3:
TABLE 3
Example 2: the embodiment provides a synthetic hydraulic oil which is prepared from the following raw materials in parts by mass: 14.58 parts of three types of base oil, 83 parts of three types of plus base oil, 1.0 part of hydraulic oil multifunctional additive, 1 part of polyacrylate adhesive, 0.4 part of polyacrylate pour point depressant and 0.02 part of polyacrylate defoamer; wherein the three base oils adopt Yubase 3 and have the viscosity of 3.3mm at 100 DEG C 2 (iv)/s, viscosity index of 107; the three types of base oil adopt Abu Dhabi 6cst, the viscosity at 100 ℃ is 6.2mm2/s, and the viscosity index is 135; the hydraulic oil multifunctional additive adopts HITEC 525; the polyacrylate adhesive adopts VISCOPLEX 11-219; VISCOPLEX1-180 is adopted as the polyacrylate pour point depressant; the polyacrylate defoamer adopts Mobilad C402.
Example 3: the embodiment provides a synthetic hydraulic oil which is prepared from the following raw materials in parts by mass: 16.08 parts of three-type base oil, 80 parts of coal-made oil base oil, 1.0 part of hydraulic oil multifunctional additive, 2.5 parts of polyacrylate adhesive, 0.4 part of polyacrylate pour point depressant and 0.02 part of polyacrylate defoamer; wherein the three base oils adopt Yubase 3, and have a viscosity of 3.3mm at 100 ℃ 2 (ii)/s, viscosity index of 107; the multifunctional hydraulic oil additive adopts HITEC 525; the polyacrylate pour point depressant is VISCOPLEX 1-360; the polyacrylate defoamer adopts Mobilad C402; the coal-to-liquids base oil has typical physicochemical parameters as shown in table 4 below:
TABLE 4
| Item of parameter | Test results | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Color (Saebert color number) | +30 | GB/T3555 |
| Density (20 ℃ C.), g/m 2 | 0.8203 | GB/T1884 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 33.11 | GB/T265 |
| Kinematic viscosity (100 ℃ C.), mm 2 /s | 6.266 | GB/T265 |
| Viscosity index | 144 | GB/T1995 |
| Flash point (open mouth),. degree.C | 249 | GB/T3536 |
| Pour point, DEG C | -42 | GB/T3535 |
| Sulfur content (mg/kg) | Not detected out | SH/T0689 |
The polyacrylate viscosity index improver has typical physicochemical parameters as shown in the following table 5:
TABLE 5
The applicant carried out kinematic viscosity, viscosity index, pour point and other tests on the synthetic hydraulic oil compositions of the above examples according to the contents of the national standards GB/T265, GB/T1995 and GB/T3535, and the test results are shown in the following Table 6:
TABLE 6
| Components | Example 1 | Example 2 | Examples3 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 31.945 | 29.033 | 31.87 |
| Viscosity index | 174 | 146 | 169 |
| Pour point, DEG C | -51 | -36 | -48 |
| Brookfield viscosity, -40 deg.C | 10338 | 30768 | 26294 |
The operations and steps disclosed in the embodiments of the present invention relate to specific elements of the present invention, and other steps may be performed according to operations well known to those skilled in the art.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments. Various modifications, adaptations, and equivalents may occur to those skilled in the art without departing from the scope and spirit of the present invention.
Claims (13)
1. A synthetic hydraulic fluid, comprising: a)50 wt% andthe coal-to-liquids base oil has a kinematic viscosity at 100 ℃ of not less than 2.0mm 2 S; b) 0.1-1 wt% of a pour point depressant; c) 1-5 wt% of a viscosity index improver, wherein the viscosity index improver is an acrylate polymer; the PSSI of the acrylate polymer is not higher than 50.
2. The synthetic hydraulic oil according to claim 1, wherein the kinematic viscosity of the coal-based oil base oil at 100 ℃ is 2.0-13 mm 2 /s。
3. The synthetic hydraulic oil according to claim 1 or 2, wherein the kinematic viscosity of the coal-based oil base oil at 40 ℃ is 6.5-80 mm 2 S; further preferably, the kinematic viscosity of the base oil of the coal-based oil at 40 ℃ is 28-36 mm 2 /s。
4. The synthetic hydraulic oil according to claim 3, wherein the number of carbon atoms of the coal-to-liquids base oil is from C7 to C60.
5. The synthetic hydraulic oil of claim 1, wherein the pour point of the coal-based oil base oil is not higher than-30 ℃; preferably, the pour point of the coal-to-liquids base oil is not higher than-35 ℃; further preferably, the pour point of the coal-to-liquids base oil is not higher than-40 ℃.
6. The synthetic hydraulic oil according to any one of claims 1, 4 and 5, wherein the coal-based oil base oil comprises a kinematic viscosity at 100 ℃ of 2.0-5.0 mm 2 The oil base oil A prepared from coal and having a kinematic viscosity of 5-13 mm at 100 DEG C 2 And/s coal-to-liquids base oil B.
7. The synthetic hydraulic fluid of claim 1, further comprising 0.4 to 2 wt% of a multifunctional additive and/or 50 to 2000ppm of a defoamer; the typical value of kinematic viscosity of the multifunctional additive at 40 ℃ is 45mm 2 /s。
8. The synthetic hydraulic oil of claim 7, wherein the multifunctional additive has a sulfur content of 12.0 to 18.0 wt% and a phosphorus content of 0.5 to 1.2 wt%.
9. The synthetic hydraulic oil of claim 1, wherein the kinematic viscosity of the acrylate polymer at 100 ℃ is 1500-1700 mm 2 /s。
10. The synthetic hydraulic oil of claim 1, having a pour point no greater than-25 ℃; further preferably, the pour point is not higher than-40 ℃; further preferably, the pour point is not higher than-45 ℃; it is further preferred that the pour point is not higher than-50 ℃.
11. The synthetic hydraulic fluid of claim 1, having a brookfield viscosity at-40 ℃ of no greater than 25000 cps; further preferred, it has a Brookfield viscosity at-40 ℃ of not higher than 20000 cps; further preferably, it has a Brookfield viscosity at-40 ℃ of not higher than 15000 cps.
12. The method for preparing the synthetic hydraulic oil according to any one of claims 1 to 11, characterized by comprising the steps of: adding the raw materials into a mixing container according to the proportion, and then stirring and mixing for 1-2 hours at 55-65 ℃ to obtain the composite material.
13. The application of the synthetic hydraulic oil according to any one of claims 1 to 11, characterized in that the synthetic hydraulic oil is applied to a wind power generation hydraulic system.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0338311A1 (en) * | 1988-04-05 | 1989-10-25 | Nippon Oil Co. Ltd. | Oil composition containing hydrogenated oil |
| US5015404A (en) * | 1988-04-05 | 1991-05-14 | Nippon Oil Co., Ltd. | Oil composition containing hydrogenated oil |
| JP2000109877A (en) * | 1998-10-09 | 2000-04-18 | Tonen Corp | Hydraulic oil composition for buffer |
| US20030153469A1 (en) * | 2002-01-28 | 2003-08-14 | Nubar Ozbalik | Automatic transmission fluid additive comprising reaction product of hydrocarbyl acrylates and dihydrocarbyldithiophosphoric acids |
| US20090005273A1 (en) * | 2007-06-28 | 2009-01-01 | Chevron U.S.A. Inc. | Functional fluid compositions |
| US20090247440A1 (en) * | 2008-03-31 | 2009-10-01 | Exxonmobil Research And Engineering Company | Unexpected shear stability benefits of synthetic oils and viscosity modifier combinations |
| CN106047329A (en) * | 2016-06-06 | 2016-10-26 | 中国石油化工股份有限公司 | High-temperature-resistant pour-point depressant and preparation method thereof |
| CN107541319A (en) * | 2017-09-06 | 2018-01-05 | 浙江实美润滑科技有限公司 | A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and preparation method thereof |
| CN111019743A (en) * | 2019-11-15 | 2020-04-17 | 山西潞安矿业(集团)有限责任公司 | Coal-based total-synthesis low-temperature hydraulic oil and preparation method thereof |
| CN111234907A (en) * | 2020-01-21 | 2020-06-05 | 西安航天动力试验技术研究所 | Coal-based fully-synthetic SN-grade lubricating oil and preparation method thereof |
| CN112430492A (en) * | 2019-08-26 | 2021-03-02 | 中国石油化工股份有限公司 | Special hydraulic oil composition for high-efficiency energy-saving injection molding machine |
| CN112940829A (en) * | 2021-02-01 | 2021-06-11 | 国家能源集团宁夏煤业有限责任公司 | Antiwear hydraulic oil and preparation method thereof |
-
2021
- 2021-07-31 CN CN202110877136.0A patent/CN114958462B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0338311A1 (en) * | 1988-04-05 | 1989-10-25 | Nippon Oil Co. Ltd. | Oil composition containing hydrogenated oil |
| US5015404A (en) * | 1988-04-05 | 1991-05-14 | Nippon Oil Co., Ltd. | Oil composition containing hydrogenated oil |
| JP2000109877A (en) * | 1998-10-09 | 2000-04-18 | Tonen Corp | Hydraulic oil composition for buffer |
| US20030153469A1 (en) * | 2002-01-28 | 2003-08-14 | Nubar Ozbalik | Automatic transmission fluid additive comprising reaction product of hydrocarbyl acrylates and dihydrocarbyldithiophosphoric acids |
| US20090005273A1 (en) * | 2007-06-28 | 2009-01-01 | Chevron U.S.A. Inc. | Functional fluid compositions |
| US20090247440A1 (en) * | 2008-03-31 | 2009-10-01 | Exxonmobil Research And Engineering Company | Unexpected shear stability benefits of synthetic oils and viscosity modifier combinations |
| CN106047329A (en) * | 2016-06-06 | 2016-10-26 | 中国石油化工股份有限公司 | High-temperature-resistant pour-point depressant and preparation method thereof |
| CN107541319A (en) * | 2017-09-06 | 2018-01-05 | 浙江实美润滑科技有限公司 | A kind of ashless hydraulic fluid of high viscosity index (HVI) low pour point and preparation method thereof |
| CN112430492A (en) * | 2019-08-26 | 2021-03-02 | 中国石油化工股份有限公司 | Special hydraulic oil composition for high-efficiency energy-saving injection molding machine |
| CN111019743A (en) * | 2019-11-15 | 2020-04-17 | 山西潞安矿业(集团)有限责任公司 | Coal-based total-synthesis low-temperature hydraulic oil and preparation method thereof |
| CN111234907A (en) * | 2020-01-21 | 2020-06-05 | 西安航天动力试验技术研究所 | Coal-based fully-synthetic SN-grade lubricating oil and preparation method thereof |
| CN112940829A (en) * | 2021-02-01 | 2021-06-11 | 国家能源集团宁夏煤业有限责任公司 | Antiwear hydraulic oil and preparation method thereof |
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