GB775542A - Improvements relating to electromagnetic carbon-pile regulators - Google Patents
Improvements relating to electromagnetic carbon-pile regulatorsInfo
- Publication number
- GB775542A GB775542A GB3444155A GB3444155A GB775542A GB 775542 A GB775542 A GB 775542A GB 3444155 A GB3444155 A GB 3444155A GB 3444155 A GB3444155 A GB 3444155A GB 775542 A GB775542 A GB 775542A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- lubricating
- solvent
- mixture
- lubricating oils
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/20—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of continuously-variable ohmic resistance
- H02P9/22—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of continuously-variable ohmic resistance comprising carbon pile resistance
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/30—Special adaptation of control arrangements for generators for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Lubricating oils are produced by contacting a mixture of a lubricating oil fraction produced by catalytically cracking gas oil and a lubricating oil fraction from a paraffinic crude oil, with a selective solvent for aromatic compounds and separating the raffinate. The gas oil fraction and both lubricating oil fractions may boil in the range 650 DEG to 1100 DEG F. The gas oil, e.g. a petroleum oil, may be cracked at 800-1000 DEG F. and atmospheric to 25 p.s.i.g. pressure using a modified natural or synthetic clay or a gel, e.g. montmorillonite clays, silica-alumina and silica-magnesia. Selective solvents referred to are SO2, phenol, furfural and nitrobenzene; phenol may be employed with up to 10 per cent of water as a solvent modifier. The lubricating oils may be dewaxed separately or the mixture may be dewaxed before or after solvent extraction; solvent dewaxing, e.g. with propane or methyl ethyl ketone, may be used. The mixture of lubricating oils may consist of 10-60 per cent of the cracked oil. The finished oil may be clay-treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3444155A GB775542A (en) | 1952-12-31 | 1952-12-31 | Improvements relating to electromagnetic carbon-pile regulators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3444155A GB775542A (en) | 1952-12-31 | 1952-12-31 | Improvements relating to electromagnetic carbon-pile regulators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB775542A true GB775542A (en) | 1957-05-29 |
Family
ID=10365701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3444155A Expired GB775542A (en) | 1952-12-31 | 1952-12-31 | Improvements relating to electromagnetic carbon-pile regulators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB775542A (en) |
-
1952
- 1952-12-31 GB GB3444155A patent/GB775542A/en not_active Expired
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