Patent US3915819A successfully refreshed from Google Patents.
US3915819A
Expired / Lapsed
US
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Electrolytic oil purifying method
Assignee: Electro Petroleum Inc
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Filing: 1974-07-03
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Granted: 1975-10-28
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Expires: 1994-07-03
Abstract
Abstract Sulfur is removed from liquid hydrocarbon oils such as crude oil by subjecting a mixture of the oil and an electrolyte to a direct current field at a relatively high current and low voltage for causing oxidation, reduction or other electrochemical reaction of the sulfur or sulfur-containing material enabling ready separation and removal of the sulfur from the oil.
Inventors
- 👤 Christy W Bell
- 👤 John K Wittle
- 👤 Arthur L Speece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:57
CPC Classifications
C; C10; C10G; C10G32/00; C10G32/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
THE METHOD OF ELECTROCHEMICALLY REMOVING SULFUR FROM HYDROCARBON LIQUIDS INCLUDING SULFUR CONTAINING MATERIALS WHICH COMPRISES MIXING THE HYDROCARBON LIQUID WITH AN IONIZING ORGANIC SOLVENT, AND SUBJECTING THE THUS OBTAINED MIXTURE TO AN ELECTRICAL D.C. FIELD HAVING A VOLTAGE OF ABOUT 2 TO 120 VOLTS AND A CURRENT OF AT LEAST ABOUT 0.0001 AMPERES PER SQUARE CENTIMETER, AND RECOVERING SAID HYDROCARBON LIQUID IN WHICH SAID SULFUR CONTAINING MATERIALS HAVE BEEN SUBSTANTIALLY REDUCED.
Claim 2
Independent Claim
71 words
THE METHOD OF ELECTROCHEMICALLY REMOVING SULFUR FROM HYDROCARBON LIQUIDS INCLUDING SULFUR CONTAINING MATERIALS WHICH COMPRISES MIXING THE HYDROCARBON LIQUID WITH AN IONIZING ORGANIC SOLVENT, AND SUBJECTING THE THUS OBTAINED MIXTURE TO AN ELECTRICAL D.C. FIELD HAVING A VOLTAGE OF ABOUT 2 TO 120 VOLTS AND A CURRENT OF AT LEAST ABOUT 0.0001 AMPERES PER SQUARE CENTIMETER, AND RECOVERING SAID HYDROCARBON LIQUID IN WHICH SAID SULFUR CONTAINING MATERIALS HAVE BEEN SUBSTANTIALLY REDUCED.
Claim 3
Dependent Claim
20 words
The method as defined in claim 1, wherein said current is not more than about 25 amperes per square centimeter.
Claim 4
Dependent Claim
14 words
The method as defined in claim 2, wherein said hydrocarbon liquid is crude oil.
Claim 5
Dependent Claim
27 words
The method as defined in claim 3, wherein said ionizing organic solvent is selected from the group consisting of methanol, benzene, toluene, xylene and glacial acetic acid.
Claim 6
Dependent Claim
37 words
The method as defined in claim 1, wherein said hydrocarbon liquid is selected from the group consisting of crude oil, mineral oil and petroleum and said voltage is in the range of about 2 to 10 volts.
References Cited (Backward Citations)
US3401101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |