CN104342251A - High-ignition-point electrical insulation oil composition and application thereof - Google Patents
High-ignition-point electrical insulation oil composition and application thereof Download PDFInfo
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Abstract
The invention relates to a high-ignition-point electrical insulation oil composition and an application thereof and mainly aims at solving the problems that mineral base oil of electrical insulation oil in the prior art has relatively low ignition point and cannot meet the requirements of small transformers of high-rise buildings in an urban power grid on fireproof safety, as well as the requirements on oxidation stability and resistance to sulfur corrosion of oil products. The high-ignition-point electrical insulation oil composition provided by the invention comprises the following components in parts by weight: a) 100 parts of mineral base oil; b) 0.08-0.4 part of an antioxidant; and c) 0-0.05 part of a metal deactivator, wherein the mineral base oil is characterized in that a1) the kinematic viscosity at the temperature of 100 DEG C is 11-14mm<2>/s; a2) the ignition point is not less than 300 DEG C; a3) the sulfur content is not more than 0.03% by weight; and a4) the nitrogen content is not more than 0.003% by weight. By adopting the technical scheme, the problems can be well solved, and the high-ignition-point electrical insulation oil composition can be used in industrial production of the high-ignition point electrical insulation oil composition.
Description
Technical field
The present invention relates to a kind of mineral height burning-point electric insulating oil composition and use thereof.
Background technology
Electric insulating oil is a kind of in the electric installation such as transformer, mutual inductor, both as the dielectric of electric installation, again as the heat-conducting medium of conductive electrical equipment heat energy, mainly plays insulation and cooling effect.
Along with the development of power industry, electrical network and power load just constantly increase, and user also constantly increases to electric installations such as transformers and with the security requirement of oil.Especially high requirement is proposed to the fire line of the oil-filled transformer used in urban distribution network Highrise buildings, thus require that the electric insulating oil used should have higher burning-point (being not less than 300 DEG C according to GB/T3536 or ASTM D92 method test burning-point) and the requirement such as excellent oxidative stability and anti-sulfur corrosion.The standard of current existing high burning-point electric insulating oil is about the ASTM D5222-08 " high burning-point mineral insulating oil " of testing of materials association of state.
The burning-point of prior art Minerals electric insulation oil base oil is lower (according to GB/T3536 or ASTM D92 method test burning-point at 140 ~ 170 DEG C), ASTM D5222-08 " high burning-point mineral insulating oil " specification of quality cannot be met, can not use in the enterprising enforcement of burning point oil immersed transformer.
By domestic and international patent and literature query, find some high burning-point electric insulation oil compositions and method for makings thereof, such as patent RU23820666C1 relates to a kind of preparation method of mineral height burning-point electric insulation oil base oil, but it is without the elaboration to oil product composition; Patent CN101538505 relate to the electric insulating oil that a kind of burning-point can reach 300 DEG C, but it is a vegetable oil.
Summary of the invention
One of technical problem to be solved by this invention is the burning-point of electric insulating oil lower (testing burning-point at 140 ~ 170 DEG C according to ASTM D92 or GB/T3536 method) in prior art, the fire safety problem (burning-point of electric insulating oil is greater than 300 DEG C as required) required by miniature transformer of urban distribution network middle-high building etc. can not be met, a kind of new mineral height burning-point electric insulation oil compositions is provided.Said composition has higher burning-point (being not less than 300 DEG C according to GB/T3536 or ASTM D92 method test burning-point), and has excellent oxidation stability and anti-sulfur corrosion.Two of technical problem to be solved by this invention is to provide a kind of purposes of the high burning-point electric insulation oil compositions corresponding with one of technical solution problem.
For one of solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of high burning-point electric insulation oil compositions, comprises following component with weight parts:
A) 100 parts of mineral base oils;
B) 0.08 ~ 0.4 part of oxidation inhibitor;
C) 0 ~ 0.05 part of metal passivator;
The feature of described mineral base oil is: a1) 100 DEG C time kinematic viscosity be 11 ~ 14 milli m2/Ss; A2) burning-point is more than or equal to 300 DEG C; A3) sulphur content is less than or equal to 0.03 % by weight; A4) nitrogen content is less than or equal to 0.003 % by weight.
Described oxidation inhibitor is selected from least one in 2,6 ditertiary butyl p cresol, 2,6-di-tert-butylphenols, dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide;
Described metal passivator is selected from N, N-dibutyl aminomethylene-alkylbenzene triazole, N, at least one in the condenses of N-diakylaminomethylene triazole, N, N-diakylaminomethylene-alkylbenzene triazole, 124 Triazole, methyl benzotriazole or 124 Triazole and aldehyde, amine.
In technique scheme, preferably, with weight parts, the consumption of oxidation inhibitor is 0.1 ~ 0.4 part, and the consumption of metal passivator is 0.001 ~ 0.03 part.
In technique scheme, preferably, the sulphur content of described mineral base oil is less than or equal to 0.02 % by weight, and burning-point is more than or equal to 308 DEG C.
In technique scheme, one of described oxidation inhibitor preferred version is for being selected from least one in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol.
In technique scheme, described oxidation inhibitor preferred version two for being selected from 2, at least one in 6-ditertbutylparacresol or 2,6-di-tert-butylphenol and the mixture being selected from least one in dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide; In mixture, be selected from 2, at least one in 6-ditertbutylparacresol or 2,6-di-tert-butylphenol is 1 with the weight ratio being selected from least one in dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide: (0.05 ~ 0.5).
In technique scheme, preferably, also pour point depressant is comprised in described composition; With weight parts, the consumption of pour point depressant is 0 ~ 0.5 part.
In technique scheme, preferably, described pour point depressant is selected from least one in alkylnaphthalene, poly-alpha olefins or polyacrylic ester.
In technique scheme, preferably, also kilfoam is comprised in described composition; With weight parts, the consumption of kilfoam is 0 ~ 0.05 part.
In technique scheme, preferably, described kilfoam is selected from least one in methyl-silicone oil, ethyl silicon oil or acrylate and ether copolymer.
The preparation method of electric insulation oil compositions of the present invention is: add in base oil by oxidation inhibitor, metal passivator, pour point depressant, kilfoam at 40 ~ 80 DEG C of temperature, stirs 0.5 ~ 2 hour, makes it all dissolve and can obtain composition of the present invention.
For solve the problems of the technologies described above two, the technical solution used in the present invention is as follows: above-mentioned high burning-point electric insulation oil compositions is for comprising in the electric installation of transformer.
In technique scheme, the component of described electric insulation oil compositions, parts by weight and preferable range are identical with the technical scheme that one of technical solution problem is taked.
The present invention adopts the performance of following various test method to described high burning-point electric insulation oil compositions to evaluate, wherein there are petroleum products kinematic viscosity assay method and kinetic viscosity computing method (GB/T265 or ASTM D445), the mensuration Cleveland opening agar diffusion method (GB/T3536 or ASTM D92) of Flash Point for Petroleum Products and burning-point, the total sulfur content assay method (ultraviolet fluorescence method) (SH/T0689 or ASTM D5453) of light hydrocarbon and motor spirit and other oil products, the mensuration oxidizing fire of trace nitrogen and chemoluminescence method (SH/T0657 or ASTM D4629) in liquid condition petroleum hydrocarbon, petroleum fractions boiling Range Distribution Analysis assay method (vapor-phase chromatography) (SH/T0558 or ASTM D8887), petroleum cuts Molecular weights algorithm (viscometer algorithm) (SH/T0730 or ASTM D2502), the carbon distribution of petroleum cuts and structural group composition method of calculation (n-d-M method) (SH/T0729 or ASTM D3238), the specific refractory power of liquid hydrocarbon and birefringence dispersion assay method (SH/T0724 or ASTM D1218), petroleum products pour point assay method (GB/T3535ASTM D97), active sulfur test method(s) (ASTM D1275) in electric insulating oil, the mensuration rotary bomb oxidation test (SH/T0193 or ASTM D2112) of lubricating oil oxidation stability, mineral insulating oil testing method for oxidation characteristics (ASTM D2440), petroleum products is to water interfacial tension assay method (ring method) (GB/T6541 or ISO6295).
The present invention combines mineral base oil, oxidation inhibitor, metal passivator and screens, and the mineral base oil wherein selected has following feature: a1) 100 DEG C time kinematic viscosity be 11 ~ 14 millimeters
2/ second; A2) burning-point is more than or equal to 300 DEG C; A3) sulphur content is less than or equal to 0.03 % by weight; A4) nitrogen content is less than or equal to 0.003 % by weight.
One of preferred version of oxidation inhibitor is for being selected from least one in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol.The preferred version of oxidation inhibitor two for being selected from least one in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol and the mixture being selected from least one in dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide.The present invention takes full advantage of the synergy of each component, make composition can have higher burning-point, the burning-point adopting the mensuration Cleveland opening agar diffusion method (GB/T3536 or ASTM D92) of Flash Point for Petroleum Products and burning-point to test oil product is more than or equal to 300 DEG C; Excellent oxidation stability, the oxidation stability adopting the mensuration rotary bomb oxidation test (SH/T0193 or ASTM D2112) of lubricating oil oxidation stability to test is more than or equal to 400min, after adopting mineral insulating oil testing method for oxidation characteristics (ASTM D2440) to test 72 hours oxidation tests, oil product greasy filth is not more than 0.15%, acid number is not more than 0.30mgKOH/g, after 164 hours oxidation tests, oil product greasy filth is not more than 0.30%, and acid number is not more than 0.60mgKOH/g; Excellent anti-sulfur corrosion, adopt active sulfur test method(s) (ASTM D1275) in electric insulating oil to test non-corrosiveness, and corrosion class is less than or equal to 1 grade, achieves good technique effect.
Below by embodiment, the invention will be further elaborated.
Embodiment
[embodiment 1 ~ 6]
According to the parts by weight in table 1, oxidation inhibitor, metal passivator, pour point depressant, kilfoam are added in base oil at 50 DEG C of temperature, be stirred to and completely evenly obtain described high burning-point electric insulation oil compositions.The kind of each component and consumption in composition, specifically in table 1.
Wherein, T501 is 2,6 ditertiary butyl p cresol; Ethanox4701 is 2,6-di-tert-butylphenol; T322 is dibenzyldisulfide; Irgamet39 is N, N-diakylaminomethylene-alkylbenzene triazole; Irgamet30 is N, N-diakylaminomethylene triazole; T553 is the condenses of 124 Triazole and aldehyde, amine; T803B is poly-alpha olefins; T921 is acrylate and ether copolymer.
[embodiment 7]
To the kinematic viscosity of the base oil in the composition in [embodiment 1 ~ 6], burning-point, initial boiling point, sulphur content (massfraction), nitrogen content (massfraction), molecular-weight average (viscometer algorithm), aromatic hydrocarbons belongs to carbon (n-d-M method), specific refractory power (20 DEG C) is tested, to the burning-point of the composition in [embodiment 1 ~ 6], pour point, oxidation stability (the rear greasy filth of 72h oxidation stability test, acid number, greasy filth after the test of 164h oxidation stability, acid number and the rotary oxygen bomb value to fresh oil), copper corrosion, interfacial tension is tested, test-results is in table 2.
Burning-point is one of fundamental property of high burning-point electric insulating oil, and high burning-point effectively can ensure the fire safety required by miniature transformer of urban distribution network middle-high building etc.Carried out burning-point test (carrying out according to GB/T3536 or ASTM D92 method) to each composition in [embodiment 1 ~ 6], the burning-point of oil product is higher, illustrates that its fire savety is higher.To the burning-point test data of [embodiment 1 ~ 6] each composition in table 2.In [embodiment 1 ~ 6], the burning-point of each composition is all greater than 300 DEG C, illustrates that each composition all can meet ASTM D5222-08 standard-required.Comparatively speaking, the quality of each composition burning-point (according to the test of GB/T3536 method) is followed successively by: [embodiment 5] > [embodiment 4] > [embodiment 3] > [embodiment 6]=[embodiment 1] > [embodiment 2]
Oxidation stability is one of key property of high burning-point electric insulating oil, significant to safeguarding that electric installation long period runs well.Oxidation stability experimental test is carried out to each composition in [embodiment 1 ~ 6], according to greasy filth and the acid number of oil product after the test of ASTM D2440 oxidation stability experimental test, according to the rotary oxygen bomb value of SH/T0193 method test oil product.After oxidation test the greasy filth of oil product and acid number less, illustrate that the oxidation stability of high burning-point electric insulating oil is better; The rotary oxygen bomb value of oil product is larger, illustrates that the oxidation stability of oil product is better.To the test data of the oxidation stability of [embodiment 1 ~ 6] each composition, rotary oxygen bomb value in table 2.In [embodiment 1 ~ 6] each composition 72 hours oxidation tests after greasy filth be all not more than 0.15%, acid number is all not more than 0.30mg/kg (in KOH), after 164 hours oxidation tests, greasy filth is all not more than 0.30%, acid number is all not more than 0.60mg/kg (in KOH), illustrates that each composition can meet the particular requirement of ASTM D5222-08 standard-required and certain customers.Comparatively speaking, in each composition oxidation stability (according to ASTM D2440 oxidation stability experimental test), after oxidation stability test in 72 hours, the quality of greasy filth is followed successively by: [embodiment 4] > [embodiment 5] > [embodiment 6] > [embodiment 1] > [embodiment 3] > [embodiment 2], acid number quality is followed successively by: [embodiment 5] > [embodiment 4] > [embodiment 1] > [embodiment 6] > [embodiment 3] > [embodiment 2], after oxidation stability test in 164 hours, the quality of greasy filth is followed successively by: [embodiment 5] > [embodiment 4] > [embodiment 1] > [embodiment 3] > [embodiment 6] > [embodiment 2], acid number quality are followed successively by: [embodiment 4] > [embodiment 5] > [embodiment 6] > [embodiment 3] > [embodiment 1] > [embodiment 2], the quality of the rotary oxygen bomb value of each composition is followed successively by [embodiment 5] > [embodiment 4] > [embodiment 1] > [embodiment 6] > [embodiment 3] > [embodiment 2].Therefore, 5 index situations of comprehensive above-mentioned evaluation high burning-point electric insulating oil oxidation stability, the quality of the oxidation stability of each composition is followed successively by: [embodiment 4] ≈ [embodiment 5] > [embodiment 1] ≈ [embodiment 6] > [embodiment 3] > [embodiment 2].
The anti-sulfur corrosion of copper corrosion to each composition is adopted to test.Test respectively according to the method A in ASTM D1275 standard and method B, regulation illustrates oil product non-corrosiveness when copper corrosion rank is less than grade 3 grades, wherein concrete partition of the level is 1 grade and (comprises 1a, 1b two grades), 2 grades (comprise 2a, 2b, 2c, 2d, 2e five grades), 3 grades (comprise 3a, 3b two grades) totally nine ranks, further comparative descriptions: the corrosion level of copper corrosion is less, then illustrate oil product to the copper corrosion hazardness of electric installation less (if 1a is best rank).To the test data of the copper corrosion performance of [embodiment 1 ~ 6] each composition in table 2.Each composition is equal non-corrosiveness in copper strip test, and copper corrosion rank is all less than or equal to 1 grade, illustrates that each composition can meet the particular requirement of ASTM D5222-08 standard-required and certain customers simultaneously.Comparatively speaking, the anti-sulfur corrosion quality of each composition is followed successively by: [embodiment 4] ≈ [embodiment 5] > [embodiment 1] ≈ [embodiment 2] ≈ [embodiment 3] ≈ [embodiment 6].
In addition, carried out pour point, interfacial tension test to each composition in [embodiment 1 ~ 6], pour point, interfacial tension etc. that result shows each composition all can meet ASTM D5222-08 standard-required.[comparative example 1 ~ 5]
Select base oil 3 as the base oil of [comparative example 1], it is characterized by: f1) 100 DEG C time kinematic viscosity be 11 ~ 13 millimeters
2/ second; F2) initial boiling point is more than or equal to 460 DEG C; F3) sulphur content is more than or equal to 0.03 and is less than or equal to 0.1 % by weight; F4) nitrogen content is less than or equal to 0.003 % by weight.
Select base oil 4 as the base oil of [comparative example 2] and [comparative example 4], it is characterized by: g1) 100 DEG C time kinematic viscosity be 12 ~ 14 millimeters
2/ second; G2) initial boiling point is more than or equal to 500 DEG C; G3) sulphur content is less than or equal to 0.03 % by weight; G4) nitrogen content is less than or equal to 0.003 % by weight; G5) fragrance adopting n-d-M method to measure belongs to carbon and is more than or equal to 1 and is less than or equal to 10 % by weight.
Select base oil 5 as the base oil of [comparative example 5], it is characterized by: h1) 100 DEG C time kinematic viscosity for being less than 11 millimeters
2/ second; H2) initial boiling point is less than or equal to 460 DEG C; H3) sulphur content is more than or equal to 0.1 and is less than or equal to 0.5 % by weight; H4) nitrogen content is more than or equal to 0.003 and is less than or equal to 0.01 % by weight; H5) fragrance adopting n-d-M method to measure belongs to carbon and is more than or equal to 1 and is less than or equal to 10 % by weight.
The base oil of [comparative example 3] is the same with [embodiment 3], and just oxidation inhibitor is not wherein selected by the present invention.
Select according to the parts by weight in [comparative example 1 ~ 5] in table 1, take the base oil of aequum respectively, then oxidation inhibitor, metal passivator, pour point depressant etc. are added in base oil at 50 DEG C of temperature, be stirred to and completely evenly obtain [comparative example 1 ~ 5] described high burning-point electric insulation oil compositions.In [comparative example 1 ~ 5] composition, the kind of each component and consumption are in table 1.
[comparative example 6]
To kinematic viscosity, burning-point, pour point, sulphur content (massfraction), the nitrogen content (massfraction) of the base oil in the composition in [comparative example 1 ~ 5], aromatic hydrocarbons belongs to carbon (n-d-M method), specific refractory power (20 DEG C) is tested.To burning-point, pour point, oxidation stability (oxidation stability tests in 72 hours greasy filth, the acid number afterwards of the composition in [comparative example 1 ~ 5], greasy filth, acid number and the rotary oxygen bomb value to fresh oil after the test of 164 hours oxidation stabilities), copper corrosion, interfacial tension test, test-results is in table 2.
Compared with [embodiment 1 ~ 6], in [comparative example 1], [comparative example 2], [comparative example 3], [comparative example 4] and [comparative example 5], the part index number of composition all can not meet ASTMD5222-08-08 standard-required, can not meet the particular requirement of user.
The comprehensively above-mentioned burning-point to each composition in [embodiment 1 ~ 6] and [comparative example 1 ~ 5], pour point, oxidation stability (the rear greasy filth of oxidation, acid number), rotary oxygen bomb value and corrosive nature (copper corrosion), the test result of interfacial tension etc., describe the present composition and there is higher burning-point (adopting the burning-point of GB/T3536 method test oil product to be all more than or equal to 300 DEG C), (after adopting mineral insulating oil testing method for oxidation characteristics (ASTM D2440) to test 72 hours oxidation tests, greasy filth is not more than 0.15% to excellent oxidation stability, acid number is not more than 0.30mg/kg (in KOH), after 164 hours oxidation tests, greasy filth is not more than 0.30%, acid number is not more than 0.60mg/kg (in KOH), the oxidation stability adopting the mensuration rotary bomb oxidation test (SH/T0193) of lubricating oil oxidation stability to test is more than or equal to 400min), excellent anti-sulfur corrosion (adopt active sulfur test method(s) (ASTM D1275) in electric insulating oil to test non-corrosiveness, and corrosion class being less than or equal to 1 grade), meanwhile, combination also has excellent low-temperature performance and interfacial tension.
Claims (10)
1. a high burning-point electric insulation oil compositions, comprises following component with weight parts:
A) 100 parts of mineral base oils;
B) 0.08 ~ 0.4 part of oxidation inhibitor;
C) 0 ~ 0.05 part of metal passivator;
The feature of described mineral base oil is: a1) 100 DEG C time kinematic viscosity be 11 ~ 14 millimeters
2/ second; A2) burning-point is more than or equal to 300 DEG C; A3) sulphur content is less than or equal to 0.03 % by weight; A4) nitrogen content is less than or equal to 0.003 % by weight
Described oxidation inhibitor is selected from least one in 2,6 ditertiary butyl p cresol, 2,6-di-tert-butylphenols, dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide;
Described metal passivator is selected from N, N-dibutyl aminomethylene-alkylbenzene triazole, N, at least one in the condenses of N-diakylaminomethylene triazole, N, N-diakylaminomethylene-alkylbenzene triazole, 124 Triazole, methyl benzotriazole or 124 Triazole and aldehyde, amine.
2. high burning-point electric insulation oil compositions according to claim 1, is characterized in that with weight parts, and the consumption of oxidation inhibitor is 0.1 ~ 0.4 part, and the consumption of metal passivator is 0.001 ~ 0.03 part.
3. high burning-point electric insulation oil compositions according to claim 1, it is characterized in that described mineral base oil sulphur content is less than or equal to 0.02 % by weight, burning-point is more than or equal to 308 DEG C.
4. high burning-point electric insulation oil compositions according to claim 1, is characterized in that described oxidation inhibitor is selected from least one in 2,6 ditertiary butyl p cresol or 2,6-di-tert-butylphenol.
5. high burning-point electric insulation oil compositions according to claim 1, it is characterized in that described oxidation inhibitor is selected from 2, at least one in 6-ditertbutylparacresol or 2,6-di-tert-butylphenol and the mixture being selected from least one in dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide; In mixture, be selected from 2, at least one in 6-ditertbutylparacresol or 2,6-di-tert-butylphenol is 1 with the weight ratio being selected from least one in dialkylthiophosphate esters derivative, phosphorodithioate or dibenzyldisulfide: (0.05 ~ 0.5).
6. high burning-point electric insulation oil compositions according to claim 1, is characterized in that also comprising pour point depressant in described composition; With weight parts, the consumption of pour point depressant is 0 ~ 0.5 part.
7. high burning-point electric insulation oil compositions according to claim 6, is characterized in that described pour point depressant is selected from least one in alkylnaphthalene, poly-alpha olefins or polyacrylic ester.
8. high burning-point electric insulation oil compositions according to claim 1, is characterized in that also comprising kilfoam in described composition; With weight parts, the consumption of kilfoam is 0 ~ 0.05 part.
9. high burning-point electric insulation oil compositions according to claim 1, is characterized in that described kilfoam is selected from least one in methyl-silicone oil, ethyl silicon oil or acrylate and ether copolymer.
10. the arbitrary described high burning-point electric insulation oil compositions of claim 1 ~ 9 is for comprising in the electric installation of transformer.
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| CN101688147A (en) * | 2007-06-28 | 2010-03-31 | 雪佛龙美国公司 | Electrical insulating oil compositions and preparation thereof |
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Application publication date: 20150211 |