US2677648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of light oils with hydrogen fluoride-activated alumina
Assignee: Standard Oil Co
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Filing: 1951-11-17
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Granted: 1954-05-04
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Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Lien
- 👤 Shalit Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF DESULFURIZING A HIGH SULFUR OLEFINIC NAPHTHA, WHICH METHOD COMPRISES INTIMATELY CONTACTING SAID NAPHTHA WITH HYDROGEN FLUORIDE AT A TEMPERATURE IN THE RANGE OF -60* F. TO +30* F. UNDER CONDITIONS FOR OBTAINING A SMALL AMOUNT OF EXTRACT MATERIAL CONTAINING A LARGE AMOUNT OF SULFUR AND FOR OBTAINING A LARGE AMOUNT OF RAFFINATE, INCLUDING POLYMERS AND ALKYMERS OF ORIGINAL CHARGING STOCK COMPONENTS, REMOVING MOST OF THE HF FROM SAID RAFFINATE, THEN HEATING SAID RAFFINATE TO A TEMPERATURE IN THE RANGE OF ABOUT 600* TO 900* F. AND CONTACTING SAID RAFFINATE AT A TEMPERATURE IN SAID RANGE WITH HF-ACTIVATED ALUMINA FOR EFFECTING FURTHER DESULFURIZATION AND A RECONVERSION OF MOST OF THE POLYMER AND ALKYLATE INTO HYDROCARBONS OF THE GASOLINE BOILING RANGE.
Claim 2
Independent Claim
122 words
THE METHOD OF DESULFURIZING A HIGH SULFUR OLEFINIC NAPHTHA, WHICH METHOD COMPRISES INTIMATELY CONTACTING SAID NAPHTHA WITH HYDROGEN FLUORIDE AT A TEMPERATURE IN THE RANGE OF -60* F. TO +30* F. UNDER CONDITIONS FOR OBTAINING A SMALL AMOUNT OF EXTRACT MATERIAL CONTAINING A LARGE AMOUNT OF SULFUR AND FOR OBTAINING A LARGE AMOUNT OF RAFFINATE, INCLUDING POLYMERS AND ALKYMERS OF ORIGINAL CHARGING STOCK COMPONENTS, REMOVING MOST OF THE HF FROM SAID RAFFINATE, THEN HEATING SAID RAFFINATE TO A TEMPERATURE IN THE RANGE OF ABOUT 600* TO 900* F. AND CONTACTING SAID RAFFINATE AT A TEMPERATURE IN SAID RANGE WITH HF-ACTIVATED ALUMINA FOR EFFECTING FURTHER DESULFURIZATION AND A RECONVERSION OF MOST OF THE POLYMER AND ALKYLATE INTO HYDROCARBONS OF THE GASOLINE BOILING RANGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |