JPS573888A - Preparation of electric insulation oil - Google Patents
Preparation of electric insulation oilInfo
- Publication number
- JPS573888A JPS573888A JP7660380A JP7660380A JPS573888A JP S573888 A JPS573888 A JP S573888A JP 7660380 A JP7660380 A JP 7660380A JP 7660380 A JP7660380 A JP 7660380A JP S573888 A JPS573888 A JP S573888A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- crude oil
- electric insulation
- base crude
- distillation
- 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.)
- Granted
Links
Abstract
PURPOSE: To provide an electric insulation oil having a small S content and high oxidation stability, by hydrogenation refining followed by solvent refining before the dewaxing treatment of a specific distillate of a paraffin base crude oil or mixture base crude oil.
CONSTITUTION: A distillate having a boiling point (converted into normal pressure) of 250W400°C which is obtained by the distillation at normal pressure of paraffin base crude oil or mixture base crude oil or by the distillation at a reduced pressure of residual oil of the normal pressure distillation of the same crude oil is hydrogenation-refined in the presence of a catalyst such as Ni or the like supported on a carrier such as alumina, etc. at 310W370°C to desulfurize 50W80wt%, and then the resulting hydrogenation refined oil is desulfurized 40W80wt% by the solvent refining employing furfural, etc. to obtain raffinate. Subsequently, the raffinate is subjected to a solvent dewaxing treatment and, if necessary, to a clay treatment in succession to obtain an electric insulation oil having an S content of 0.1W 0.4wt%.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7660380A JPS5932512B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing electrical insulating oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7660380A JPS5932512B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing electrical insulating oil |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS573888A true JPS573888A (en) | 1982-01-09 |
JPS5932512B2 JPS5932512B2 (en) | 1984-08-09 |
Family
ID=13609896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7660380A Expired JPS5932512B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing electrical insulating oil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5932512B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS633092A (en) * | 1986-06-23 | 1988-01-08 | Kiyouseki Seihin Gijutsu Kenkyusho:Kk | Production of lubricant base oil |
JPH01161090A (en) * | 1987-12-18 | 1989-06-23 | Kiyouseki Seihin Gijutsu Kenkyusho:Kk | Production of insulating oil |
CN104629798A (en) * | 2015-02-06 | 2015-05-20 | 北京中科诚毅科技发展有限公司 | Oil and coal hybrid hydrogenation refining technique and equipment |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61196816U (en) * | 1985-05-31 | 1986-12-08 | ||
JPH02121350U (en) * | 1989-03-14 | 1990-10-02 |
-
1980
- 1980-06-09 JP JP7660380A patent/JPS5932512B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS633092A (en) * | 1986-06-23 | 1988-01-08 | Kiyouseki Seihin Gijutsu Kenkyusho:Kk | Production of lubricant base oil |
JPH01161090A (en) * | 1987-12-18 | 1989-06-23 | Kiyouseki Seihin Gijutsu Kenkyusho:Kk | Production of insulating oil |
CN104629798A (en) * | 2015-02-06 | 2015-05-20 | 北京中科诚毅科技发展有限公司 | Oil and coal hybrid hydrogenation refining technique and equipment |
WO2016124148A1 (en) * | 2015-02-06 | 2016-08-11 | 北京中科诚毅科技发展有限公司 | Coal and oil hybrid hydrogenation refining technique and device |
US10344238B2 (en) | 2015-02-06 | 2019-07-09 | Catech Technology Co., Ltd. | Coal and oil co-hydrotreating processing technology and equipment |
Also Published As
Publication number | Publication date |
---|---|
JPS5932512B2 (en) | 1984-08-09 |
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