CN102290123B - Low-viscosity low-chlorine insulating oil and preparation method thereof - Google Patents
Low-viscosity low-chlorine insulating oil and preparation method thereof Download PDFInfo
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- CN102290123B CN102290123B CN 201110105332 CN201110105332A CN102290123B CN 102290123 B CN102290123 B CN 102290123B CN 201110105332 CN201110105332 CN 201110105332 CN 201110105332 A CN201110105332 A CN 201110105332A CN 102290123 B CN102290123 B CN 102290123B
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Abstract
The invention relates to the technical field of low-viscosity low-chlorine insulating oil, in particular to low-viscosity low-chlorine insulating oil and a preparation method thereof. The preparation method includes the following steps that: component A of C13 to C15 is rectified from high-boiling residue as byproduct in industrial ethylbenzene production, and the main ingredients of the component A are diphenylethane, a small amount of diphenylmethane and a smaller amount of other C13-C15 arenes; styrene and toluene carries out Friedel-Crafts reaction under the function of acid catalyst to prepare component B: 1,1- phenyltolylethane; after the component A and the component B are blended according to certain proportions and the conventional insulating oil-refining technique is carried out, a certain amount of antioxidant is then added, and thereby the insulating oil disclosed by the invention is prepared. The insulating oil can be used as power capacitor impregnant, and can be adapted to low-temperature environments. Since the material adopted by one of the main components of the insulating oil is the high-boiling residue as the byproduct of industrial ethylbenzene, the comprehensive utilization of resources is realized, and the product cost is low.
Description
Technical field
The present invention relates to a kind of low-viscosity low-chlorine insulating oil technical field, especially a kind of low-viscosity low-chlorine insulating oil and preparation method thereof.This insulating oil is applicable to the impregnating agent of the power capacitor under the low temperature environment.
Background technology
Current insulating oil as capacitor impregnant has 1.1-phenyl xylyl ethane, 1.1-phenyl ethylbenzene ethane, diisopropyl naphthalene ... Deng, the carbon atom number is 16 in this class insulating oil molecule, molecular weight is about 210, and its viscosity is generally: (40 ℃) 4～7mm
2/ s.In addition, for adapting to the development of power capacitor manufacturing technology, people have released again that molecular weight is less, viscosity is lower, aromaticity is larger, but flash-point still is not less than 130 ℃ insulating oil, as: C-101 insulating oil of single, double benzyl toluene (ratio is about 75: 25) combination, SAS-40 (60,70) insulating oil by monobenzyl methylbenzyl and diphenylethane combination, this two class makes up oily mean molecule and contains carbon number and be respectively 15.7 and 14, and because the asymmetry of molecular structure, make the viscosity of this two based composition all lower, all be lower than (40 ℃) 4mm
2/ s, solidifying point is lower than respectively-60 ℃ ,-50 ℃.
Although this two classes insulating oil dipping property is good, also can satisfy the requirement of power capacitor under the low temperature environment, this two classes combined insulation oil is all take monobenzyl toluene as Main Ingredients and Appearance; Like this, this two series products all be unable to do without the corrosive catalysts of raw material benzyl chloride and ferric trichloride and so on, all must give off the hydrogen chloride of a great deal of, such raw material and technique in building-up process not only can etching apparatus, contaminated environment, and in order to make product can reach the quality requirement of insulating oil, to repeatedly wash in process of production, alkali cleaning, therefore also to discharge waste acid water, the buck of a great deal of.But washing and alkali cleaning also only can be removed inorganic chlorine in the product, and as not using special dechlorination measure, the chlorinty in the product tends to greater than 100 even hundreds of ppm.Organochlorine in the product is extremely harmful: the benzene chlorine in ring is often poisonous, polychlorinated biphenyl for example, although it is very excellent as the insulating oil performance, the carcinogenicity of on business recognizing is eventually forbidden by the whole world; And it is often unstable to be connected on the phenyl ring chlorine on the alkyl, may deviate from storing and use procedure, causes the deteriorated of oil product electric property that insulate.
Just because of this, corresponding international standard: IEC 60867:1993 or national standard: GB/21221-2007 has stipulated that the chlorinity in the insulating oil is less than 30 ppm, it is difficult will reaching this standard for these two kinds above-mentioned combination oil, this has almost become about factor that causes of these two kinds of insulating oil productions and requisite quality, and also need add a certain amount of chlorine agent _ epoxy compounds of catching in the product, do to replenish and save mistake from damage and execute, this has strengthened again also numerous technical process of having changed of cost.
Summary of the invention
Weakness and deficiency in order to overcome above-mentioned two kinds of insulating oils the invention provides a kind of low-viscosity low-chlorine insulating oil and preparation method thereof.
The present invention for the technical scheme that solves its technical problem employing is: a kind of low-viscosity low-chlorine insulating oil, this insulating oil comprise from the byproduct high-boiling components that industrial ethylbenzene is produced, isolate C through rectifying
13～C
15Component A, this component A also comprises a small amount of diphenyl methane take diphenylethane as main component, and other C of less amount
13～C
15Aromatic hydrocarbons, such as isopropyl naphthalene, tolyl tolyl methane etc., and styrene and toluene are under the acidic catalyst effect, through the component B:1.1-phenyltoluene base ethane of friedel-crafts reaction preparation, with the composite mixing of component A, B, each composition percentage by weight of described component A, B is:
Diphenyl methane≤7 %;
Diphenylethane 30～80 %;
Other C
13～C
15Aromatic hydrocarbons≤3 %;
1.1-phenyltoluene base ethane 20～70 %;
The composite mixed composition of component A, B after insulation oil refining technique, is added the antioxidant that accounts for 0.5 of total weight～5.0 ‰ again, make insulating oil of the present invention.
According to another embodiment of the invention, comprise that further this insulating oil comprises from the byproduct high-boiling components that industrial ethylbenzene is produced, and isolates C through rectifying
13～C
15Component A, this component A also comprises a small amount of diphenyl methane take diphenylethane as main component, and other C of less amount
13～C
15Aromatic hydrocarbons, such as isopropyl naphthalene, tolyl tolyl methane etc., and styrene and toluene are under the acidic catalyst effect, through the component B:1.1-phenyltoluene base ethane of friedel-crafts reaction preparation, with the composite mixing of component A, B, each composition percentage by weight of described component A, B is:
Diphenyl methane≤4 %;
Diphenylethane 40～70 %;
Other C
13～C
15Aromatic hydrocarbons≤2 %;
1.1-phenyltoluene base ethane 30～60 %;
The composite mixed composition of component A, B after insulation oil refining technique, is added the antioxidant that accounts for 1.0 of total weight～2.0 ‰ again, make insulating oil of the present invention.
A kind of preparation method of low-viscosity low-chlorine insulating oil, described low-viscosity low-chlorine insulating oil refers to that viscosity is lower than (40 ℃) 4mm2/s, chlorinity is lower than the insulating oil of 30ppm.The method may further comprise the steps: (1) preparation component A: from the byproduct high-boiling components that industrial ethylbenzene is produced, isolate C13～C15 component A through rectifying; (2) preparation component B: be raw material with styrene and toluene, under the acid catalyst effect through the synthetic component B for preparing of friedel-crafts reaction; (3) with in proportion composite mixing of component A, B; Each composition percentage by weight of described component A, B is:
Diphenyl methane≤7 %;
Diphenylethane 30～70.5 %;
Other C13～C15 aromatic hydrocarbons≤3 %;
1.1-phenyltoluene base ethane 20～60 %; (4) with the composition of step (3) after insulation oil refining technique, add again antioxidant, just make insulating oil of the present invention.
The invention has the beneficial effects as follows: molecular weight of the present invention is the main composition composition by diphenylethane, 1.1-phenyltoluene base ethane, also contains the C such as a small amount of diphenyl methane, isopropyl naphthalene, toluene tolyl methane
13～C
15Aromatic hydrocarbons, mean molecule carbon containing number is about 14.5.Therefore insulating oil viscosity of the present invention is low, condensation point is low, aromaticity is high, so good, the air-breathing property of cryogenic property is high, compares all not a halfpenny the worsely with any insulating oil in the past, and has the advantageous feature of self.In the insulating oil low in viscosity, that cryogenic property is suitable, be without the hydrogen chloride output, without the insulating oil of washing waste acid water, alkali waste water discharging in unique a kind of production process.Chloride hardly in the product, needn't in product, add and catch the chlorine agent.
The present invention is low viscosity, low condensation point, low chlorine content, high aromaticity, high air-breathing property, the insulating oil of electric property excellence.This insulating oil can be used as power capacitor impregnating agent, and can be adapted to low temperature environment.One of Main Components of this invention, it is raw materials used to be the by-product high-boiling components of industrial ethylbenzene, has realized the comprehensive utilization of resource, low cost product, energy-conserving and environment-protective.
In sum, the present invention is a kind of green, low viscosity, low chlorine, low cost and high performance insulating oil.
Embodiment
In conjunction with following specific embodiment, further specify the present invention.But embodiment only is used for explanation, is not construed as limiting the invention.
A kind of low-viscosity low-chlorine insulating oil, in the byproduct high-boiling components with certain chemical enterprise ethylbenzene production, C is isolated in rectifying
13～C
15Component A, wherein Main Ingredients and Appearance is diphenylethane, also has other C of a small amount of diphenyl methane and less amount
13～C
15Aromatic hydrocarbons is such as isopropyl naphthalene, tolyl tolyl methane etc.; Composite upper be raw material with styrene and toluene, under the acid catalyst effect through the synthetic component B:1.1-phenyltoluene base ethane of friedel-crafts reaction; After interpolation atlapulgite stirring absorption, filtration, vacuum degassing, dehydration are made with extra care, add a certain amount of antioxidant, this antioxidant can be any oil product antioxidant again, such as 2.6-BHT (BHT), etc.; Just make insulating oil of the present invention.
Embodiment 1:
With the ethylbenzene high-boiling components of certain chemical enterprise ethylbenzene production plants institute output, with the rectifying of precise distillation post negative pressure, progressively distillate each component by light to heavy, intercepting C
13～C
15Component A, this component A contain diphenylethane 83%, diphenyl methane 12% and other about 5 %; Be raw material with styrene and toluene, under the acid catalyst effect through the synthetic component B:1.1-phenyltoluene base ethane of friedel-crafts reaction; Get the component A of 40 weight portions, with the component B of 60 weight portions, the percentage by weight of component A and each composition of B is as follows:
Diphenyl methane 4.8 %;
Diphenylethane 33.2 %;
Other C
13～C
15Aromatic hydrocarbons 2.0 %;
1.1-phenyltoluene base ethane 60 %;
With component A and B mix composite after, it is refining to stir lower absorption, filtration, vacuum degassing, dehydration through carclazyte again, adds the antioxidant BHT that accounts for total weight 1.0 ‰ again, namely makes qualified insulating oil.
This insulating oil:
Viscosity: 3.4mm
2/ s (40 ℃);
Condensation point :-58 ℃;
Flash-point: 136 ℃;
Chlorinity: 7 ppm.
Embodiment 2:
With the ethylbenzene high-boiling components of certain chemical enterprise ethylbenzene production plants institute output, with the rectifying of precise distillation post negative pressure, to the heavy each component that progressively distillates, intercept C by light
13～C
15Component A, this component A comprise diphenylethane 92 %, diphenyl methane 5.2 %, other about 2.8 %; Be raw material with styrene and toluene, under the acid catalyst effect, through the synthetic B component of friedel-crafts reaction, get the component A of 60 weight portions and the B component of 40 weight portions: 1.1-phenyltoluene base ethane, each composition percentage by weight of component A and B is as follows:
Diphenyl methane 3.12 %;
Diphenylethane 55.2 %;
Other C
13～C
15Aromatic hydrocarbons 1.68 %;
1.1-phenyltoluene base ethane 40 %;
With component A and B mix composite after, it is refining to stir lower absorption, filtration, vacuum degassing, dehydration through carclazyte again, adds the antioxidant BHT that accounts for total weight 2.0 ‰ again, namely makes qualified insulating oil.
This insulating oil:
Viscosity: 2.7mm
2/ s (40 ℃);
Condensation point :-61 ℃;
Flash-point: 133 ℃;
Chlorinity: 17 ppm.
Embodiment 3:
With the ethylbenzene high-boiling components of certain chemical enterprise ethylbenzene production plants institute output, with the rectifying of precise distillation post negative pressure, to the heavy each component that progressively distillates, intercept C by light
13～C
15Component A, this component A comprise diphenylethane 94 %, diphenyl methane 3.9 %, other about 2.1 %; Be raw material with styrene and toluene, under the acid catalyst effect, through the synthetic component B of friedel-crafts reaction, get the component A of 75 weight portions, and the B component of 25 weight portions: 1.1-phenyltoluene base ethane, the percentage by weight of component A and B is as follows:
Diphenyl methane 2.92 %;
Diphenylethane 70.5 %;
Other C
13～C
15Aromatic hydrocarbons 1.58 %;
1.1-phenyltoluene base ethane 25 %;
With component A and B mix composite after, it is refining to stir lower absorption, filtration, vacuum degassing, dehydration through carclazyte again, adds the antioxidant BHT that accounts for total weight 1.5 ‰ again, namely makes qualified insulating oil.
This insulating oil:
Viscosity: 2.5mm
2/ s (40 ℃);
Condensation point :-62 ℃;
Flash-point: 131 ℃;
Chlorinity: 14 ppm.
Claims (5)
1. a low-viscosity low-chlorine insulating oil is characterized in that, this insulating oil comprises from the byproduct high-boiling components that industrial ethylbenzene is produced, isolates C through rectifying
13～C
15Component A, described component A comprises diphenylethane, and diphenyl methane and other C
13～C
15Aromatic hydrocarbons; Also comprise and use styrene and toluene under the acidic catalyst effect, through the component B of friedel-crafts reaction preparation; Described component B is: 1.1-phenyltoluene base ethane, and each composition percentage by weight of described component A, B is:
Diphenyl methane≤7 %;
Diphenylethane 30～70.5 %;
Other C
13～C
15Aromatic hydrocarbons≤3 %;
1.1-phenyltoluene base ethane 20～60 %.
2. a kind of low-viscosity low-chlorine insulating oil according to claim 1 is characterized in that, this insulating oil also comprises the antioxidant that accounts for 0.5 of total weight～5.0 ‰.
3. a kind of low-viscosity low-chlorine insulating oil according to claim 1 is characterized in that, each composition percentage by weight of described component A, B is:
Diphenyl methane 2.92%～4 %;
Diphenylethane 55.2 %;
Other C
13～C
15Aromatic hydrocarbons 1.58%～2 %;
1.1-phenyltoluene base ethane 40 %.
4. a kind of low-viscosity low-chlorine insulating oil according to claim 3 is characterized in that, this insulating oil also comprises the antioxidant that accounts for 1.0 of total weight～2.0 ‰.
5. the preparation method of a low-viscosity low-chlorine insulating oil is characterized in that, may further comprise the steps: (1) preparation component A: from the byproduct high-boiling components that industrial ethylbenzene is produced, isolate C through rectifying
13～C
15Component A;
(2) preparation component B: be raw material with styrene and toluene, under the acid catalyst effect through the synthetic component B for preparing of friedel-crafts reaction;
(3) with in proportion composite mixing of component A, B; Each composition percentage by weight of described component A, B is:
Diphenyl methane≤7 %;
Diphenylethane 30～70.5 %;
Other C
13～C
15Aromatic hydrocarbons≤3 %;
1.1-phenyltoluene base ethane 20～60 %;
(4) with the composition of step (3) after insulation oil refining technique, add again antioxidant, just make insulating oil of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110105332 CN102290123B (en) | 2011-04-26 | 2011-04-26 | Low-viscosity low-chlorine insulating oil and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110105332 CN102290123B (en) | 2011-04-26 | 2011-04-26 | Low-viscosity low-chlorine insulating oil and preparation method thereof |
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| CN102290123A CN102290123A (en) | 2011-12-21 |
| CN102290123B true CN102290123B (en) | 2013-03-13 |
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|---|---|---|---|---|
| CN104081469A (en) * | 2012-02-03 | 2014-10-01 | 吉坤日矿日石能源株式会社 | Electrically insulating oil composition having excellent performance in wide temperature range |
| CN102751090B (en) * | 2012-07-09 | 2015-09-16 | 合肥华耀电子工业有限公司 | Dry-type high-voltage polypropylene film type metal foil type capacitor impregnation technique |
| CN106653406B (en) * | 2016-10-26 | 2018-06-01 | 安徽飞达电气科技有限公司 | A kind of thin film capacitor impregnating agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259798A2 (en) * | 1986-09-04 | 1988-03-16 | Nippon Petrochemicals Company, Limited | Electrical insulating oil composition |
| CN1861767A (en) * | 2005-05-13 | 2006-11-15 | 西安电力电容器研究所 | Diarylane insulating oil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5422600A (en) * | 1977-07-21 | 1979-02-20 | Furukawa Electric Co Ltd:The | Electrical insulating oil |
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2011
- 2011-04-26 CN CN 201110105332 patent/CN102290123B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259798A2 (en) * | 1986-09-04 | 1988-03-16 | Nippon Petrochemicals Company, Limited | Electrical insulating oil composition |
| CN1861767A (en) * | 2005-05-13 | 2006-11-15 | 西安电力电容器研究所 | Diarylane insulating oil |
Non-Patent Citations (1)
| Title |
|---|
| JP昭54-22600A 1979.02.20 |
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Owner name: CHANGZHOU CHENSHENG NEW INSULATION MATERIA CO., LT Free format text: FORMER OWNER: CHANGZHOU WUJIN DONGFANG INSULATION OIL CO., LTD. Effective date: 20130131 |
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Effective date of registration: 20130131 Address after: 213000, Jiangsu Changzhou Town, Wujin District, Hutang City ditch South Village Industrial Park Applicant after: Changzhou Chensheng Insulating Materials Co., Ltd. Address before: 213000 ditch village, Hutang Town, Wujin District, Jiangsu, Changzhou Applicant before: Changzhou Wujin Dongfang Insulating Oil Co.,Ltd. |
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