Patent US2862878A successfully refreshed from Google Patents.
US2862878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening process and method for removing water of reaction from the sweetening reagent
Assignee: Shell Development Co
•
Filing: 1956-05-28
•
Granted: 1958-12-02
•
Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Have Cornelis D Ten
- 👤 Willem J Pieters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:18
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C07; C07B; C07B45/00; C07B45/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
IN A PROCESS FOR REMOVING MERCAPTANS FROM A LIGHT HYDROCARBON OIL WHEREIN THERE OCCURS INTIMATE LIQUID CONTACTING OF THE OIL IN PRESENCE OF OXYGEN WITH AN AQUEOUS TREATING SOLUTION OF A ALKALI METAL HYDROXIDE AND AN ALKALI METAL PHENOLATE TO EFFECT AN OXIDATION OF THE MERCAPTANS TO DISULFIDES WITH AN ACCOMPANYING FORMATION OF WATER OF REACTION WHICH CAUSES AN OHBJECTIONABLE DILUTION OF THE TREATING SOLUTION, THE IM PROVEMENT COMPRISING UTILIZING IN THE PROCESS A TREATING SOLUTION OF THE FORGOING DESCRIPTION HAVING AN INITIAL COMPOSITION WHICH PERMITS ITS COEXISTENCE AS A SEPARATE LIQUID PHASE IN HETEROGENEOUS EQUILIBRIUM WITH A SECOND ALKALI METAL PHENOLATE, RECOVTION CONTAINING LESS OF THE ALKALI METAL PHENOLATE RECOVERING THE WATER-DILUTED TREATING SOLUTION FROM THE CONTACTED LIGHT HYDROCARBON OIL AND SUBJECTING SAID TREATING SOLUTION TO AN INTIMATE WASHING WITH SAID SECOND ALKALI METAL HYDROXIDE SOLUTION, THEREBY REGENERATING THE AQUEOUS TREATNG SOLUTION TO SUBSTANTIALLY ITS ORIGINAL WATER CONTENT BY TRANSFERRING THE WATER OF REACTING TO SAID SECOND SOLUTION, SEPARATING THE REGENERATED TREATING SOLUTION AND THE SECOND SOLUTION, AND RECYCLING SAID TREATING SOLUTION FOR CONTACTING WITH ADDITIONAL AMOUNTS OF SAID LIGHT HYDROCARBON OIL.
Claim 2
Dependent Claim
183 words
IN A PROCESS FOR REMOVING MERCAPTANS FROM A LIGHT HYDROCARBON OIL WHEREIN THERE OCCURS INTIMATE LIQUID CONTACTING OF THE OIL IN PRESENCE OF OXYGEN WITH AN AQUEOUS TREATING SOLUTION OF A ALKALI METAL HYDROXIDE AND AN ALKALI METAL PHENOLATE TO EFFECT AN OXIDATION OF THE MERCAPTANS TO DISULFIDES WITH AN ACCOMPANYING FORMATION OF WATER OF REACTION WHICH CAUSES AN OHBJECTIONABLE DILUTION OF THE TREATING SOLUTION, THE IM PROVEMENT COMPRISING UTILIZING IN THE PROCESS A TREATING SOLUTION OF THE FORGOING DESCRIPTION HAVING AN INITIAL COMPOSITION WHICH PERMITS ITS COEXISTENCE AS A SEPARATE LIQUID PHASE IN HETEROGENEOUS EQUILIBRIUM WITH A SECOND ALKALI METAL PHENOLATE, RECOVTION CONTAINING LESS OF THE ALKALI METAL PHENOLATE RECOVERING THE WATER-DILUTED TREATING SOLUTION FROM THE CONTACTED LIGHT HYDROCARBON OIL AND SUBJECTING SAID TREATING SOLUTION TO AN INTIMATE WASHING WITH SAID SECOND ALKALI METAL HYDROXIDE SOLUTION, THEREBY REGENERATING THE AQUEOUS TREATNG SOLUTION TO SUBSTANTIALLY ITS ORIGINAL WATER CONTENT BY TRANSFERRING THE WATER OF REACTING TO SAID SECOND SOLUTION, SEPARATING THE REGENERATED TREATING SOLUTION AND THE SECOND SOLUTION, AND RECYCLING SAID TREATING SOLUTION FOR CONTACTING WITH ADDITIONAL AMOUNTS OF SAID LIGHT HYDROCARBON OIL.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |