CN115368955A - Special synthetic gear oil for low-pour-point oil field and wind power generation and preparation method thereof - Google Patents
Special synthetic gear oil for low-pour-point oil field and wind power generation and preparation method thereof Download PDFInfo
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- CN115368955A CN115368955A CN202210007511.0A CN202210007511A CN115368955A CN 115368955 A CN115368955 A CN 115368955A CN 202210007511 A CN202210007511 A CN 202210007511A CN 115368955 A CN115368955 A CN 115368955A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/047—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- 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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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention belongs to the technical field of oil fields and wind power generation industries and wind power generation low-pour-point synthetic gear oil, relates to the field of C10M169/04IPC, and particularly relates to special synthetic gear oil for a low-pour-point oil field and wind power generation and a preparation method thereof. The paint comprises the following components in parts by mass: a) 50-90 wt% of base oil; b) 1-5 wt% of gear oil multifunctional additive; c) 5-20 wt% of synthetic ester; d) 0.01 to 0.5wt% of a metal deactivator; e) 0.01-0.5 wt% of defoaming agent; the base oil consists of poly-alpha olefin base oil and coal-to-liquid base oil; the pour point of the special synthetic gear oil for the low-pour-point oil field and the wind power generation is not higher than-40 ℃. Compared with the mineral oil in the existing gear oil, the synthetic oil has low pour point, so that the gear oil can still be in a flowing state at a lower temperature, and experimental results show that the pour point of the gear oil is-48 ℃, and the pour point of the gear oil is much lower than that of the existing mineral-based gear oil at-15 ℃, so that the gear oil still has a lubricating effect at a very low temperature, and the service life of the gear oil is prolonged.
Description
Technical Field
The invention belongs to the technical field of low-pour-point synthetic gear oil in oil fields and wind power generation industries, relates to the field of C10M169/04IPC, and particularly relates to special synthetic gear oil for low-pour-point oil fields and wind power generation and a preparation method thereof.
Background
With the rapid development of domestic economy, the domestic demand for crude oil is steadily increased, a large number of newly-developed oil production fields continuously emerge, the dosage of the special gear oil for oil field exploitation matched with the newly-developed oil production fields is continuously increased, and simultaneously, more rigorous requirements are put forward on the quality of the special gear oil for oil fields. If the gear oil is required to have a suitable viscosity: the viscosity is the most basic characteristic of gear oil, the viscosity is high, the formed lubricating oil film is thick, and the load resistance of the gear is relatively high; proper viscosity-temperature characteristics require lower freezing point, good fluidity at low temperature and the like. In addition, gear oil is also required to have sufficient resistance to pressure and wear: the wear resistance is an important technical index of gear oil, and as the gear load is generally over 400Mpa (for example, the load of a hyperbolic tooth surface is as high as 1800 Mpa), in order to prevent the wear and the scratch of the gear surface caused by the oil film damage, an extreme pressure anti-wear agent is generally added into the gear oil so as to prolong the service life of the gear.
Wind energy is more and more taken as clean energy, and in recent years, the utilization of wind energy is developed rapidly. Under the dual pressure of conventional energy emergency and global ecological environment deterioration, with the increasing environmental concern of international society, especially for reducing CO 2 The implementation of relevant international convention such as emission and the like, wind power generation is more and more paid more and more attention by various countries. Preferential policies are made by governments of various countries, enterprises and individuals are encouraged to actively participate in the wind power generation business, and the development of wind power is enhanced. Wind power generation has become an important new army in the energy field at present due to the advantages of short construction period, flexible installation scale, no fuel consumption, no environmental pollution and the like. Since the 70 s of the 20 th century, the development and utilization of wind energy has been rapidly advanced, and the technology of wind power generation has become mature.
Most of the existing gear oil is general oil, the pertinence is weak, the extreme pressure abrasion resistance is poor, and an oil film is easy to damage at a gear meshing part, so that the metal surface of the gear meshing part is directly contacted, and the surface of the gear is damaged. Some special oils have a high viscosity and can form a thick protective film on the occlusion part. However, in the low temperature state in winter, the fluidity of the special oil is still poor, the lubricating effect is poor, more power is needed for the gear operation, and the energy is wasted.
In view of the above problems, although there are researches and publications on solutions, for example, in the low pour point micro-shear gear oil for oil field pumping unit disclosed in chinese patent CN201811027631, a gear oil with a low pour point can be prepared by mixing 500N base oil, PAO40 base oil, alkyl naphthalene base oil, and other additives, so that the pour point can reach-39 ℃, but most of oil fields and wind fields are distributed in colder regions, the lowest temperature in winter reaches even forty degrees below zero, and the gear oil is easy to be solid at these temperatures, which can cause poor lubrication, easily cause tooth surface scratches, and affect the gear life. In addition, the existing means also include the use of synthetic oils (such as polyalphaolefin) and low freezing point base oils (such as naphthenic base oil), but the cost of the synthetic oil is about 3 times that of the mineral oil, and the economic benefit is poor; the naphthenic base oil and the like have low viscosity index, and a large amount of viscosity index improver is needed to improve the viscosity-temperature performance, so that the shearing performance of the naphthenic base oil is reduced, and the service life of the oil product is greatly reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a synthetic gear oil special for low pour point oil fields and wind power generation, which comprises the following components in parts by mass: a) 50-90 wt% of base oil; b) 1-5 wt% of gear oil multifunctional additive; c) 5-20 wt% of synthetic ester; d) 0.01 to 0.5wt% of a metal deactivator; e) 0.01-0.5 wt% of defoamer, wherein the base oil consists of poly-alpha-olefin base oil and coal oil base oil; the pour point of the special synthetic gear oil for the low-pour-point oil field and the wind power generation is not higher than-40 ℃.
The base oil is composed of poly-alpha-olefin base oil and coal-to-liquid base oil, wherein the proportion of the poly-alpha-olefin base oil and the coal-to-liquid base oil can be prepared according to the comprehensive characteristic requirement of the synthetic gear oil.
The poly-alpha-olefin base oil is base oil prepared by polymerizing ethylene to prepare alpha-olefin, and further polymerizing and hydrogenating the alpha-olefin, and the poly-alpha-olefin base oil with different characteristics can be prepared according to different synthesis methods, polymerization degrees and the like.
As a preferable technical scheme of the invention, the kinematic viscosity of the poly-alpha olefin base oil at 40 ℃ is 400-3800 mm 2 S; more preferably, the kinematic viscosity of the polyalphaolefin base oil at 40 ℃ is 1100 to 3500mm 2 S; further, the kinematic viscosity of the poly-alpha-olefin base oil at 40 ℃ is 1100-3400 mm 2 And s. Illustratively, the polyalphaolefin base oil may have a kinematic viscosity at 40 ℃ of 1240mm 2 /s、1250mm 2 /s、1260mm 2 /s、3000mm 2 /s、3100mm 2 /s、3200mm 2 /s、3300mm 2 /s、3400mm 2 And/s, etc.
As a preferable technical scheme of the invention, the kinematic viscosity of the poly-alpha olefin base oil at 100 ℃ is 40-400 mm 2 S; more preferably, the kinematic viscosity of the polyalphaolefin base oil at 100 ℃ is 95 to 350mm 2 Further, the poly-alpha-olefin base oil has a kinematic viscosity at 100 ℃ of 95 to 300mm 2 And s. Illustratively, the polyalphaolefin base oil may have a kinematic viscosity at 100 ℃ of 95mm 2 /s、100mm 2 /s、105mm 2 /s、250mm 2 /s、300mm 2 /s、350mm 2 /s、400mm 2 And/s, etc.
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 the national standard GB/T265.
In a preferred embodiment of the present invention, the viscosity index of the polyalphaolefin base oil is 155 to 250; further, the viscosity index of the polyalphaolefin base oil is 165 to 240; illustratively, the viscosity index may be 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 200, 210, 220, 230, 240, etc. 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 invention can be obtained by testing according to the national standard GB/T2541.
As a preferred technical scheme of the invention, the content of the poly-alpha olefin base oil is 20-50 wt% calculated by 100wt% of the synthetic gear oil special for low pour point oil fields and wind power generation; illustratively, the content of the polyalphaolefin base oil may be 20wt%, 21wt%, 2wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt%, 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, 40wt%, 45wt%, 50%, etc.
The source of the polyalphaolefin base oil satisfying the above conditions in the present invention is not particularly limited, and may be prepared by a method conventionally used in the art, or commercially available products such as, for example, although not limited to, monopure PAO100 from santa lubricating oil ltd.
The coal-to-oil base oil is prepared by taking coal-to-oil as a raw material through a direct or indirect method, and mainly comprises isoalkane, sulfur, nitrogen and heavy metal contents which are almost zero, and aromatic hydrocarbon content which is low, so that the oil reaches the cosmetic grade and the food grade. High saturation after hydrogenation and better oxidation stability. The viscosity index is higher, the pour point is lower, the evaporation loss is small, and the requirement of blending high-performance lubricating oil can be met.
As a preferable technical scheme of the invention, the kinematic viscosity of the coal-to-liquid base oil at 40 ℃ is 20-80 mm 2 S; more preferably, the kinematic viscosity of the base oil for the coal-to-liquids at 40 ℃ is 60-75 mm 2 S; more preferably, the kinematic viscosity of the coal-to-liquids base oil at 40 ℃ is 63-70 mm 2 And s. Illustratively, the kinematic viscosity of the coal-to-liquids base oil at 40 ℃ may be 60mm 2 /s、61mm 2 /s、62mm 2 /s、63mm 2 /s、64mm 2 /s、65mm 2 /s、66mm 2 /s、67mm 2 /s、68mm 2 /s、69mm 2 /s、70mm 2 /s、71mm 2 /s、72mm 2 /s、73mm 2 /s、74mm 2 /s、75mm 2 And/s, etc.
The kinematic viscosity of the base oil of the coal-to-liquids oil at 100 ℃ is 5-15 mm 2 S; more preferably, the kinematic viscosity of the base oil for the coal-to-liquids at 100 ℃ is 10-14 mm 2 And s. Illustratively, the kinematic viscosity of the coal-to-liquids base oil at 100 ℃ may be 10mm 2 /s、11mm 2 /s、12mm 2 /s、13mm 2 /s、14mm 2 And/s, etc.
More preferably, the viscosity index of the coal-to-liquids base oil is 130 to 155. As an example, the viscosity index of the coal-to-liquids base oil may be 130, 131, 132, 133, 134, 135, 136, 137, 138, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, and the like.
As a preferable technical scheme of the invention, the content of the coal-to-liquid base oil is 20-70 wt% calculated by 100wt% of the synthetic gear oil special for low pour point oil fields and wind power generation. More preferably, the content of the coal-derived oil base oil is 50 to 70wt%. The content may be, for example, 50wt%, 51wt%, 52wt%, 53wt%, 54wt%, 55wt%, 56wt%, 57wt%, 58wt%, 59wt%, 60wt%, 61wt%, 62wt%, 63wt%, 64wt%, 65wt%, 66wt%, 67wt%, 68wt%, 69wt%, 70wt%, etc.
In the present invention, the source of the coal-to-oil base oil satisfying the above requirements is not particularly limited, and may be prepared by a conventional method in the art, or may be a commercially available product such as ICCSYN series of lubricantin ltd, francisco and pacific, for example.
The synthetic gear oil special for the low pour point oil field and the wind power generation comprises 5-20 wt% of synthetic ester, wherein the synthetic ester is a compound obtained by esterifying an organic acid and an alcohol compound under the action of a catalyst, and can be divided into monoester, diester, polyol ester and the like according to the ester group content in the structure. Illustratively, the synthetic ester can be present in an amount of 5wt%, 5.5wt%, 6wt%, 6.5wt%, 7wt%, 7.5wt%, 8wt%, 8.5wt%, 9wt%, 9.5wt%, 10wt%, 10.5wt%, 11wt%, 11.5wt%, 12wt%, 12.5wt%, 13wt%, 13.5wt%, 14wt%, 14.5wt%, 15wt%, 15.5wt%, 16wt%, 16.5wt%, 17wt%, 17.5wt%, 18wt%, 18.5wt%, 19wt%, 19.5wt%, 20wt%, etc.
In a preferred embodiment of the present invention, the synthetic ester is a saturated ester, preferably a saturated polyol ester and a diester, and more preferably a C8-16 saturated polyol ester or diester. The synthetic ester and the compound base oil in the system have the synergistic effect, so that the synthetic gear oil has excellent lubricating property, good high-temperature oxidation resistance, excellent high-temperature stability, low evaporation loss and good low-temperature fluidity. Saturated esters, preferably C8-16 saturated esters, which may be used in the present invention include, but are not limited to, croda's Prilube 3970.
The synthetic gear oil special for the low pour point oil field and the wind power generation comprises 1-5 wt% of gear oil multifunctional additive, the gear oil multifunctional additive is a component prepared by blending various additives such as an antioxidant, an antiwear agent, an antirust agent and the like, and an oil product prepared by the multifunctional additive has excellent antioxidant and antirust properties, thermal stability and hydrolytic stability, good filterability and outstanding antiwear performance, can prevent the abrasion of gears and other elements, and prolongs the service life of a turbine.
As a preferable technical scheme of the invention, the kinematic viscosity of the gear oil multifunctional additive at 40 ℃ is 20-50 mm 2 S; more preferably, the kinematic viscosity of the gear oil multifunctional additive at 40 ℃ is 30-45 mm 2 And(s) in the presence of a catalyst. By way of example, the gear oil multifunctional additive may have a kinematic viscosity of 30mm at 40 ℃ 2 /s、31mm 2 /s、32mm 2 /s、33mm 2 /s、34mm 2 /s、35mm 2 /s、36mm 2 /s、37mm 2 /s、38mm 2 /s、39mm 2 /s、40mm 2 /s、41mm 2 /s、42mm 2 /s、43mm 2 /s、44mm 2 /s、45mm 2 And/s, etc.
Furthermore, the kinematic viscosity of the gear oil multifunctional additive at 100 ℃ is 3.5-20 mm 2 S; furthermore, the kinematic viscosity of the gear oil multifunctional additive at 100 ℃ is 4.5-8.5 mm 2 And(s) in the presence of a catalyst. Illustratively, the kinematic viscosity of the gear oil multifunctional additive at 100 ℃ can be 3.5mm 2 /s、4.5mm 2 /s、5.5mm 2 /s、6mm 2 /s、6.3mm 2 /s、6.4mm 2 /s、6.5mm 2 /s、6.6mm 2 /s、6.7mm 2 /s、6.8mm 2 /s、6.9mm 2 /s、7mm 2 /s、7.3mm 2 /s、7.5mm 2 /s、7.8mm 2 /s、8mm 2 /s、8.5mm 2 And/s, etc.
The low pour point synthetic gear oil for oil fields and wind power generation according to the present invention contains 0.01 to 0.5wt% of a metal deactivator, which is a component contributing to inhibition of catalytic action of metal or ions on oxidation, and may be contained, for example, in an amount of 0.01wt%, 0.03wt%, 0.05wt%, 0.08wt%, 0.1wt%, 0.15wt%, 0.18wt%, 0.2wt%, 0.23wt%, 0.25wt%, 0.28wt%, 0.3wt%, 0.35wt%, 0.38wt%, 0.4wt%, 0.42wt%, 0.45wt%, 0.48wt%, 0.5wt%, or the like.
As a preferable technical scheme of the invention, the metal deactivator is a benzotriazole compound. The benzotriazole compound may be exemplified by irGAET series from BASF. The benzotriazole compound can produce chelate with metal ions or produce a protective film on the surface of metal under the interaction of the benzotriazole compound, the compound base oil, the gear oil multifunctional additive and other components in the system, can inhibit the catalytic action of the metal or ions on oxidation, is a better copper corrosion inhibitor, and has partial anti-wear and anti-rust effects.
The synthetic gear oil special for the low pour point oil field and the wind power generation comprises 0.01 to 0.5wt percent of defoaming agent. Illustratively, the content thereof may be 0.01wt%, 0.03wt%, 0.05wt%, 0.08wt%, 0.1wt%, 0.15wt%, 0.18wt%, 0.2wt%, 0.23wt%, 0.25wt%, 0.28wt%, 0.3wt%, 0.35wt%, 0.38wt%, 0.4wt%, 0.42wt%, 0.45wt%, 0.48wt%, 0.5wt%, etc. Preferably, the defoaming agent is a siloxane compound, has the functions of exhausting and breaking emulsion and is widely applied to industrial lubricating oil.
As a preferred technical scheme of the invention, the pour point of the synthetic gear oil special for the low pour point oil field and the wind power generation is not higher than-40 ℃; furthermore, the pour point of the synthetic gear oil special for the low pour point oil field and the wind power generation is not higher than-41 ℃; further preferably, the pour point of the synthetic gear oil special for the low pour point oil field and the wind power generation is not higher than-42 ℃.
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 present invention is tested according to the national standard GB/T3535.
As a preferable technical scheme of the invention, the kinematic viscosity of the special synthetic gear oil for the low-pour-point oil field and the wind power generation at 40 ℃ is 140-352 mm 2 S; by way of example, the kinematic viscosity of the low pour point oil field and the special synthetic gear oil for wind power generation at 40 ℃ can be 140mm 2 /s、141mm 2 /s、142mm 2 /s、143mm 2 /s、144mm 2 /s、145mm 2 /s、146mm 2 /s、147mm 2 /s、148mm 2 /s、149mm 2 /s、150mm 2 /s、151mm 2 /s、152mm 2 /s、153mm 2 /s、154mm 2 /s、155mm 2 /s、156mm 2 /s、157mm 2 /s、158mm 2 /s、159mm 2 /s、160mm 2 /s、161mm 2 /s、162mm 2 /s、163mm 2 /s、164mm 2 /s、165mm 2 /s、166mm 2 /s、167mm 2 /s、168mm 2 /s、169mm 2 /s、170mm 2 /s、200mm 2 /s、250mm 2 /s、300mm 2 /s、352mm 2 And/s, etc.
As a preferable technical scheme of the invention, the kinematic viscosity of the synthetic gear oil special for the low pour point oil field and the wind power generation at 100 ℃ is 13-50 mm 2 And s. By way of example, the kinematic viscosity of the low pour point oilfield and wind power special synthetic gear oil at 100 ℃ can be 13mm 2 /s、14mm 2 /s、15mm 2 /s、16mm 2 /s、17mm 2 /s、18mm 2 /s、19mm 2 /s、20mm 2 /s、21mm 2 /s、22mm 2 /s、23mm 2 /s、24mm 2 /s、25mm 2 /s、26mm 2 /s、27mm 2 /s、28mm 2 /s、30mm 2 /s、35mm 2 /s、40mm 2 /s、45mm 2 /s、50mm 2 And/s, etc.
The second aspect of the invention provides a preparation method of the synthetic gear oil special for the low pour point oil field and the wind power generation, which comprises the steps of taking preparation raw materials according to a proportion, adding the preparation raw materials into a blending container, mechanically stirring and blending, and uniformly mixing the components to obtain the synthetic gear oil special for the low pour point oil field and the wind power generation.
The technical scheme provided by the invention has the following beneficial effects：
The base oil in the gear oil adopts the synthetic oil, and compared with the mineral oil in the existing gear oil, the synthetic oil has low pour point, so the gear oil can still be in a flowing state at lower temperature, and experimental results show that the pour points of the gear oil with the viscosity grade of 150 are-48 ℃, the pour points of the gear oil with the viscosity grade of 220 and the gear oil with the viscosity grade of 320 are-42 ℃, and the pour points are much lower than the pour points of the existing mineral-based gear oil at-15 ℃, so that the gear oil still has a lubricating effect at very low temperature, and the service life of the gear oil is prolonged. And because the viscosity index of the synthetic oil is higher, the viscosity-temperature performance of the gear oil can be improved without adding a viscosity index improver, so that the gear oil does not have the problem of viscosity reduction caused by a shearing action, can keep high viscosity for a long time, and has a good lubricating effect for a long time.
Detailed Description
To further illustrate the specific implementation of the above scheme, the following examples are further provided, in which: taking the preparation raw materials according to the proportion, adding the preparation raw materials into a blending container, mechanically stirring and blending the raw materials, and uniformly mixing the components to obtain the synthetic gear oil special for the low pour point oil field and the wind power generation.
Base oil 1 is a polyalphaolefin base oil PAO100 having typical physicochemical parameters as shown in table 1 below:
TABLE 1
| Item | Typical data | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Colour(s) | <1 | GB/T0168 |
| Density (20 ℃ C.), g/m 2 | 0.8501 | GB/T1884 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 1252.18 | GB/T265 |
| Kinematic viscosity (100 ℃), mm 2 /s | 101.55 | GB/T265 |
| Viscosity index | 171 | GB/T2541 |
| Flash point (open mouth),. Degree.C | 280 | GB/T3536 |
| Pour point, DEG C | -24 | GB/T3535 |
Base oil 2 is a polyalphaolefin base oil PAO40 having typical physicochemical parameters as shown in table 2 below:
TABLE 2
| Item | Typical data | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Colour(s) | <1 | GB/T0168 |
| Density (15 ℃ C.), g/m 2 | 0.850 | GB/T1884 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 393.2 | GB/T265 |
| Kinematic viscosity (100 ℃), mm 2 /s | 41.0 | GB/T265 |
| Viscosity index | 156 | GB/T2541 |
| Flash point (open mouth),. Degree.C | 280 | GB/T3536 |
| Pour point, DEG C | -42 | GB/T3535 |
Base oil 3 is a polyalphaolefin base oil PAO300 having typical physicochemical parameters as shown in table 3 below:
TABLE 3
| Item | Typical data | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Colour(s) | <1 | GB/T0168 |
| Density (15 ℃ C.), g/m 2 | 0.850 | GB/T1884 |
| Kinematic viscosity (40 ℃), mm 2 /s | 3358 | GB/T265 |
| Kinematic viscosity (100 ℃ C.), mm 2 /s | 303 | GB/T265 |
| Viscosity index | 241 | GB/T2541 |
| Flash point (open mouth),. Degree.C | 286 | GB/T3536 |
| Pour point, DEG C | -33 | GB/T3535 |
Base oil 4 is a polyalphaolefin base oil PAO150 having typical physicochemical parameters as shown in table 4 below:
TABLE 4
| Item | Typical data | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Colour(s) | <1 | GB/T0168 |
| Density (15 ℃ C.), g/m 2 | 0.850 | GB/T1884 |
| Kinematic viscosity (40 ℃), mm 2 /s | 1641 | GB/T265 |
| Kinematic viscosity (100 ℃), mm 2 /s | 151 | GB/T265 |
| Viscosity index | 204 | GB/T2541 |
| Flash point (open mouth),. Degree.C | 264 | GB/T3536 |
| Pour point, DEG C | -36 | GB/T3535 |
The coal-to-liquids (CTL) base oil a had typical physicochemical parameters as shown in table 5 below:
TABLE 5
The coal-to-liquids (CTL) base oil B had typical physicochemical parameters as shown in table 6 below:
TABLE 6
| Item | Typical data | Test method |
| Appearance of the product | Clear and transparent | Visual inspection of |
| Colour(s) | <0.5 | ASTM D1500 |
| Density (20 ℃ C.), g/m 2 | 0.8238 | GB/T1884 |
| Kinematic viscosity (40 ℃ C.), mm 2 /s | 31.12 | GB/T265 |
| Kinematic viscosity (100 ℃), mm 2 /s | 6.245 | GB/T265 |
| Viscosity index | 147 | GB/T1995 |
| Flash point (open mouth),. Degree.C | 264 | GB/T3536 |
| Pour point, DEG C | -45 | GB/T3535 |
| Sulfur content (mg/kg) | 0 | SH/T0689 |
Example 1
The embodiment provides a synthetic gear oil special for a low pour point oil field and wind power generation, which comprises the following components in parts by mass:
a) 88.9% of a base oil; the base oil consists of 65% of coal-to-liquids (CTL) base oil A and 35% of base oil 1;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is an Afton Hitec3250 gear oil complexing agent;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoamer; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Example 2
a) 88.9% of a base oil; the base oil consists of 35% coal-to-liquids (CTL) base oil a and 65% base oil 2;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoamer; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Example 3
a) 88.9% of a base oil; the base oil consists of 25% of coal-to-liquids (CTL) base oil B and 75% of base oil 2;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Example 4
a) 88.9% of a base oil; the base oil consists of 71% coal-to-liquids (CTL) base oil a and 29% base oil 3;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAME 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Example 5
a) 88.9% of a base oil; the base oil consists of 57% coal-to-liquids (CTL) base oil a and 43% base oil 3;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoamer; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Example 6
a) 88.9% of a base oil; the base oil consists of 46% of coal-to-liquids (CTL) base oil A and 54% of base oil 3;
b) 2.5 percent of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Comparative example 1
a) 88.9% of a base oil; the base OIL consists of 48% of aramcoaltra 8 base OIL of the three types of base OIL S-OIL and 52% of base OIL 1;
b) 2.5 percent of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Prilube 3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Comparative example 2
a) 88.9% of a base oil; the base oil consists of 50 percent of Yubase6 of which three types of base oil are SK and 50 percent of base oil 1;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is an Afton Hitec3250 gear oil complex agent bag;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Comparative example 3
a) 88.9% of a base oil; the base oil consists of 64% of coal-to-liquids (CTL) base oil A and 36% of base oil 4;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Comparative example 4
a) 88.9% of a base oil; the base oil consists of 48% Coal To Liquids (CTL) base oil a and 52% base oil 4;
b) 2.5 percent of gear oil multifunctional additive; the multifunctional gear oil additive is an Afton Hitec3250 gear oil complex agent bag;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAET 30 from BASF;
e) 0.5% of a defoaming agent; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Comparative example 5
a) 88.9% of a base oil; the base oil consists of 43% Coal To Liquids (CTL) base oil a and 57% base oil 4;
b) 2.5% of gear oil multifunctional additive; the multifunctional gear oil additive is a Hitec3250 gear oil complexing agent bag of Afton;
c) 8% of saturated ester; the saturated ester is Priolube3970 of Croda;
d) 0.1% of a metal deactivator; the metal deactivator is IRGAME 30 from BASF;
e) 0.5% of a defoamer; the defoaming agent is dimethyl silicone oil of Shanghai Hualing resin.
Performance testing
The applicant carried out the following performance tests on the gear oil samples of the above examples and comparative examples, the test standards and test results of which are shown in tables 7, 8 and 9 below.
TABLE 7
TABLE 8
TABLE 9
The experimental results show that the special synthetic gear oil for the low-pour-point oil field and the wind power generation can be better used at a lower temperature, and the service life of the oil product is greatly prolonged.
Claims (13)
1. The special synthetic gear oil for the low-pour-point oil field and the wind power generation is characterized by comprising the following components in parts by mass: a) 50-90 wt% of base oil; b) 1-5 wt% of gear oil multifunctional additive; c) 5-20 wt% of synthetic ester; d) 0.01 to 0.5wt% of a metal deactivator; e) 0.01-0.5 wt% of defoaming agent; the base oil consists of poly-alpha olefin base oil and coal-to-liquid base oil; the pour point of the special synthetic gear oil for the low-pour-point oil field and the wind power generation is not higher than-40 ℃.
2. The synthetic gear oil for low pour point oilfield and wind power generation according to claim 1, wherein the polyalphaolefin base oil is 20 to 70wt% based on 100wt% of the synthetic gear oil for low pour point oilfield and wind power generation; further, the content of the coal-to-liquids base oil is 20-70 wt%.
3. The synthetic gear oil for low pour point oilfield and wind power generation according to claim 2, wherein the kinematic viscosity of the coal-based oil base oil at 40 ℃ is 20-80 mm 2 /s。
4. The synthetic gear oil for low pour point oilfield and wind power generation according to claim 2, wherein the polyalphaolefin base oil has a kinematic viscosity of 400-3800 mm at 40 ℃ 2 /s。
5. The synthetic gear oil for low pour point oilfield and wind power generation according to claim 4, wherein the poly-alpha-olefin base oil has a kinematic viscosity of 40 to 400mm at 100 ℃ 2 /s。
6. The low pour point synthetic oil for oilfield and wind power generation dedicated gear oil according to any one of claims 1 to 5, wherein the synthetic ester is a saturated ester, preferably a saturated polyol ester and diester, and more preferably a C8-16 saturated polyol ester or diester.
7. The synthetic gear oil for low pour point oilfield and wind power generation of claim 6, wherein the kinematic viscosity of the multifunctional gear oil additive at 40 ℃ is 20-50 mm 2 /s。
8. The synthetic gear oil for low pour point oilfield and wind power generation according to claim 7, wherein the kinematic viscosity of the multifunctional gear oil additive at 100 ℃ is 3.5-20 mm 2 /s。
9. The low pour point oilfield and wind power generation dedicated synthetic gear oil according to claim 6, wherein the metal deactivator is a benzotriazole compound; preferably, the defoaming agent is a siloxane compound.
10. The low pour point oil field and wind power generation dedicated synthetic gear oil according to any one of claims 7 to 9, wherein the pour point of the low pour point oil field and wind power generation dedicated synthetic gear oil is not higher than-40 ℃; furthermore, the pour point of the synthetic gear oil special for the low pour point oil field and the wind power generation is not higher than-43 ℃.
11. The low pour point synthetic gear oil for oil fields and wind power generation of any one of claims 7 to 9, wherein the kinematic viscosity at 40 ℃ of the low pour point synthetic gear oil for oil fields and wind power generation is 135 to 352mm 2 /s。
12. The low pour point synthetic gear oil for oil fields and wind power generation according to any one of claims 7 to 9, wherein the kinematic viscosity of the low pour point synthetic gear oil for oil fields and wind power generation at 100 ℃ is 13 to 50mm 2 /s。
13. The method for preparing the synthetic gear oil special for the low pour point oilfield and the wind power generation according to any one of claims 1 to 12, characterized in that the preparation raw materials are taken according to the proportion and then added into a blending container, and the components are mechanically stirred and blended to be uniformly mixed, so that the synthetic gear oil special for the low pour point oilfield and the wind power generation is obtained.
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