EP0030249B1 - Compositions d'huile isolante - Google Patents

Compositions d'huile isolante Download PDF

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Publication number
EP0030249B1
EP0030249B1 EP19790302746 EP79302746A EP0030249B1 EP 0030249 B1 EP0030249 B1 EP 0030249B1 EP 19790302746 EP19790302746 EP 19790302746 EP 79302746 A EP79302746 A EP 79302746A EP 0030249 B1 EP0030249 B1 EP 0030249B1
Authority
EP
European Patent Office
Prior art keywords
composition
insulating oil
oil
product
temperature range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19790302746
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German (de)
English (en)
Other versions
EP0030249A1 (fr
Inventor
Johann G. D. Schulz
Anatoli Onopchenko
William A. Kofke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gulf Research and Development Co
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Gulf Research and Development Co
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Filing date
Publication date
Application filed by Gulf Research and Development Co filed Critical Gulf Research and Development Co
Priority to DE7979302746T priority Critical patent/DE2965961D1/de
Priority to EP19790302746 priority patent/EP0030249B1/fr
Publication of EP0030249A1 publication Critical patent/EP0030249A1/fr
Application granted granted Critical
Publication of EP0030249B1 publication Critical patent/EP0030249B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
    • H01B3/22—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/20—Organic compounds not containing metal atoms
    • C10G29/205—Organic compounds not containing metal atoms by reaction with hydrocarbons added to the hydrocarbon oil

Definitions

  • This invention relates to novel insulating oil compositions comprising a major amount of an insulating oil and a minor amount of a product obtained as a result of a process which comprises reacting benzene with ethylene in the presence of an alkylation catalyst to obtain a reaction mixture containing largely unreacted benzene, ethylbenzene, polyethylbenzenes, 1,1-diphenylethane and heavier material, separating at least benzene, ethylbenzene and polyethylbenzenes from said reaction mixture and thereafter recovering from said heavier material a fraction whose boiling points fall within a temperature range of about 255° to about 420°C as said product.
  • Insulating oils for example, transformer oils
  • transformer oils are required to have low power factors and high dielectric strengths, and to be able to maintain thermal and oxidative stability toward degradation and oxidation and to possess minimum tendency toward the formation of gas while in use. See, for example, U.S. Patent No. 3,549,537 to Brewster et al. Insulating oils composed largely of naphthenes and/or highly-branched, non-cyclic, paraffins can be used satisfactorily as transformer oils, for example, but unfortunately, they possess the tendency to produce gas during service.
  • the insulating oils used herein can be obtained from any naphthenic and/or paraffinic origin.
  • naphthenic and/or paraffinic oils we mean to include naturally-derived, or synthetic, stocks containing largely one-ring structures, such as cyclopentane and cyclohexane derivatives, two-ring structures, such as decalin and dicyclohexyl derivatives, three-, four-, and five-membered ring structures, which may be part of the same or different molecule and their mixtures, etc.
  • the paraffinic oils are defined as being largely of highly-branched, non-cyclic, compounds. A more useful conventional definition is that developed by E. C. Lane and E.
  • oils can be synthetic oils, such as those obtained as the result of the oligomerization of 1-olefins having from six to 14 carbon atoms, preferably from eight to 12 carbon atoms, such as 1- decene, mixtures of 1-decene and 1-octene, 1-dodecene, etc., as described, for example, in US-A-4,045,507 to Cupples et al.
  • Mixtures of naphthenic and paraffinic oils, including mixtures of natural and synthetic oils can also be used, for example, in weight ratios of about 99:1 to about 1:99, preferably about 90:10 to about 10:90.
  • the insulating oil used herein can be defined in accordance with the parameters set forth in Table I.
  • the product is obtained by reacting benzene with ethylene to obtain a reaction mixture containing unreacted benzene, ethylbenzene, polyethylbenzenes, 1,1-diphenylethane and heavier material, separating at least benzene, ethylbenzene, and polyethylbenzenes from said reaction mixture and thereafter recovering from said heavier material the entire fraction, or any portion of said fraction, whose boiling points at atmospheric pressure (ambient pressure) fall within a temperature range of 255° to 420°C, preferably 260° to 400°C, most preferably 268° to 400°C.
  • the product that is added to the above insulating oils is the entire fraction, or any portion of said fraction, whose boiling points at atmospheric pressure fall within a temperature range of 275° to 420°C, preferably 280° to 400°C.
  • the amounts of said product added to the insulating oil to inhibit the gassing tendency thereof can be varied over a wide limit, but, in general, the amount present, based on the weight of the final insulating composition, will be in the range of five to 20 weight per cent, preferably five to 15 weight per cent. Since the insulating oil and said product are both hydrocarbons and therefore completely miscible one in the other, mixing of the two at ambient temperature and ambient pressure until a homogeneous solution is obtained will suffice.
  • the following Table 11 compares the properties of the naphthenic base oil employed herein with the ASTM D-3487 insulating oil specifications for Type I Oil.
  • the naturally-derived base oil (naphthenic) was obtained from Interprovincial Pipeline No. 1 and was a mixture of low sulfur, low pour point crudes. After conventional distillation, the fraction consisting of a 50:50 mixture of light vacuum and heavy vacuum oils (Gravity °API 25) was subjected to hydrotreating following the conditions in US-A-3,764,518. The purpose of this treatment was to upgrade the product through hydrocracking, isomerization and saturation.
  • the product from the two stage hydrotreatment has the properties shown in Table II.
  • the synthetic base oil was prepared in accordance with the procedure of Example 1 of US-A-4,045,507 of Cupples et al, employing 1- decene as feedstock.
  • the total product was then passed over a commercial nickel catalyst (Ni0104T, 1/8-inch pellets having a surface area of 125 square meters per gram) at 165°C and 600 pounds per square inch gauge (41 kilograms per square centimeter) of hydrogen pressure at a rate sufficient to effect stabilization of the product through hydrogenation. Distillation under vacuum afforded the synthetic base oil used herein, a dimer fraction boiling in the temperature range of 160°-168°C at 666 Pa (five millimeters of mercury).
  • a product for adding to the naphthenic oil was prepared as follows: Benzene and ethylene in a molar ratio of 9:1 were contacted in the liquid phase, while stirring, in a reactor at a temperature of 130°C and a pressure of 70 pounds per square inch gauge (4.9 kilograms per square centimeter) in the presence of AICI 3 catalyst over a period of one hour, which was sufficient to convert all of the ethylene.
  • the AICI 3 complex catalyst was prepared by dissolving AICI 3 in a polyethylbenzene cut from a previous run so that after the addition the composition of the catalyst complex was as follows: 31.5 weight per cent AICI 3 , 7.0 weight per cent benzene, 19.3 weight per cent ethylbenzene, 29.8 weight per cent polyalkylated benzenes, 3.4 weight per cent 1,1 1-diphenylethane and 9.0 weight per cent higher-boiling components.
  • the amount of AICI 3 present in the catalyst mixture amounted to 0.0034 parts by weight per one part by weight of ethylbenzene produced.
  • ethyl chloride as promoter in an amount corresponding 0.0034 parts by weight per one part by weight of ethylbenzene produced to maintain a high catalyst efficiency.
  • Analysis of the alkylation product showed the presence of 49.0 weight per cent benzene, 32.9 weight per cent ethylbenzene, 17.5 weight per cent of polyalkylated benzenes (6.0 weight per cent diethylbenzene, 2.7 weight per cent triethylbenzenes, 2.1 weight per cent tetraethylbenzenes and 6.7 weight per cent other alkylbenzenes), 0.1 weight percent 1, 1-diphenylethane and 0.4 weight percent residue.
  • the alkylation product was subjected to distillation to recover unreacted benzene, ethylbenzene, polyalkylated benzenes and 1,1-diphenyiethane, and the benzene and polyalkylated benzenes were recycled to the reaction zone.
  • the residue remaining was a dark, viscous, high-boiling material, and was produced in an amount corresponding to 0.012 parts for each part of ethylbenzene produced.
  • the residue so obtained was subjected to distillation to obtain a cut having a boiling point at atmospheric pressure within the temperature range of 275° to 400°C. This cut was the product added to the naphthenic oil and to the paraffinic oil in a later example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Insulating Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (12)

1. Nouvelle composition d'huile isolante, comprenant une quantité majeure d'une huile isolante et une quantité mineure d'un produit obtenu comme résultat d'un procédé qui comprend la réaction du benzène avec l'éthylène, en présence d'un catalyseur d'alkylation, pour obtenir un mélange réactionnel contenant du benzène n'ayant pas réagi, de l'éthylbenzène, des polyéthylbenzènes, du 1,1-diphényl- éthane et de la matière plus lourde, la séparation d'au moins le benzène, l'éthylbenzène et les polyéthylbenzènes de ce mélange réactionnel puis la récupération, à partir de ladite matière plus lourde, d'une fraction dont les points d'ébullition se situent dans une gamme de températures de 255° à 420°C, à titre dudit produit.
2. Composition selon la revendication 1, dans laquelle l'huile isolante est une huile naphténique.
3. Composition selon la revendication 1, dans laquelle ladite huile isolante est une huile paraffinique.
4. Composition selon la revendication 1, dans laquelle ladite huile isolante est une huile paraffinique obtenue à partir de l'oligomérisation de 1 -oléfines ayant de 6 à 14 atomes de carbone.
5. Composition selon la revendication 1, dans laquelle ladite huile isolante est une huile paraffinique obtenue à partir de l'oligomérisation de 1 -oléfines ayant de 8 à 12 atomes de carbone.
6. Composition selon la revendication 1, dans laquelle ladite huile isolante est une huile paraffinique obtenue à partir de l'oligomérisation de 1 -décène.
7. Composition selon la revendication 1, dans laquelle la quantité dudit produit dans la composition d'huile isolante se situe entre 5 et 20% en poids.
8. Composition selon la revendication 1, dans laquelle la quantité dudit produit dans la composition d'huile isolante se situe entre 5 et 15%.
9. Composition selon la revendication 1, dans laquelle les points d'ébullition de ladite fraction se situent dans une gamme de températures de 260° à 400°C.
10. Composition selon la revendication 1, dans laquelle les points d'ébullition de ladite fraction se situent dans une gamme de températures de 267° à 400°C.
11. Composition selon la revendication 1, dans laquelle les points d'ébullition de ladite fraction se situent dans une gamme de températures de 275° à 420°C.
12. Composition selon la revendication 1, dans laquelle les points d'ébullition de ladite fraction se situent dans une gamme de températures de 280°C à 400°C.
EP19790302746 1979-11-30 1979-11-30 Compositions d'huile isolante Expired EP0030249B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE7979302746T DE2965961D1 (en) 1979-11-30 1979-11-30 Insulating oil compositions
EP19790302746 EP0030249B1 (fr) 1979-11-30 1979-11-30 Compositions d'huile isolante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790302746 EP0030249B1 (fr) 1979-11-30 1979-11-30 Compositions d'huile isolante

Publications (2)

Publication Number Publication Date
EP0030249A1 EP0030249A1 (fr) 1981-06-17
EP0030249B1 true EP0030249B1 (fr) 1983-07-20

Family

ID=8186474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790302746 Expired EP0030249B1 (fr) 1979-11-30 1979-11-30 Compositions d'huile isolante

Country Status (2)

Country Link
EP (1) EP0030249B1 (fr)
DE (1) DE2965961D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543207A (en) * 1982-12-25 1985-09-24 Nippon Petrochemicals Company, Limited Electrical insulating oil and oil-filled electrical appliances
US7531083B2 (en) 2004-11-08 2009-05-12 Shell Oil Company Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036010A (en) * 1958-07-01 1962-05-22 Exxon Standard Sa Non-gassing insulating oils
FR1243597A (fr) * 1959-12-10 1960-10-14 Progil Perfectionnements à l'isolation de l'appareillage électrique
GB1052658A (fr) * 1963-07-22
US4045507A (en) * 1975-11-20 1977-08-30 Gulf Research & Development Company Method of oligomerizing 1-olefins
US4111824A (en) * 1977-07-21 1978-09-05 Gulf Research & Development Co. Liquid dielectric composition based on a fraction derived from the alkylation product of benzene with ethylene

Also Published As

Publication number Publication date
EP0030249A1 (fr) 1981-06-17
DE2965961D1 (en) 1983-08-25

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