US2921020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of sour hydrocarbon distillate
Assignee: Universal Oil Products Co
•
Filing: 1957-12-18
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Granted: 1960-01-12
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Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Urban Peter
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
C; C10; C10G; C10G53/00; C10G53/02; C10G53/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CONTINUOUS REGENERATIVE SWEETENING PROCESS WHICH COMPRISES CONTACTING SOUR HYDROCARBON DISTILLATE WITH AN ALKALINE SOLUTION CONTAINING A PHTHALOCYANINE CATALYST IN AN EXTRACTION ZONE, SEPARATELY WITHDRAWING THEREFROM A PARTLY TREATED HYDROCARBON DISTILLATE AND A USED ALKALINE SOLUTION CONTAINING SULFUR COMPOUNDS AND SAID PHTHALOCYANINE CATALYST, CONTACTING THE LAST MENTIONED ALKALINE SOLUTION WITH AN OXYGEN-CONTAINING GAS TO SUBSTANTIALLY COMPLETELY REGENERATE THE ALKALINE SOLUTION AND TO OXIDIZE THE SULFUR COMPONENTS TO DISULFIDES IN A REGENERATION ZONE, SAID REACTIONS BEING CATALYZED BY THE PHTHALOCYANINE CATALYST, WITHDRAWING THEREFROM REGENERATED ALKALINE SOLUTION CONTAINING DISULFIDES, PHTHALOCYANINE CATALYST AND ENTRAINED OXYGEN, SEPARATING SAID REGENERATED SOLUTION INTO A DISULFIDE PHASE AND AN ALKALINE SOLUTION PHASE, REDUCING THE OXYGEN CONTENT OF A FIRST PORTION OF THE SEPARATED AL-
Claim 2
Dependent Claim
117 words
A CONTINUOUS REGENERATIVE SWEETENING PROCESS WHICH COMPRISES CONTACTING SOUR HYDROCARBON DISTILLATE WITH AN ALKALINE SOLUTION CONTAINING A PHTHALOCYANINE CATALYST IN AN EXTRACTION ZONE, SEPARATELY WITHDRAWING THEREFROM A PARTLY TREATED HYDROCARBON DISTILLATE AND A USED ALKALINE SOLUTION CONTAINING SULFUR COMPOUNDS AND SAID PHTHALOCYANINE CATALYST, CONTACTING THE LAST MENTIONED ALKALINE SOLUTION WITH AN OXYGEN-CONTAINING GAS TO SUBSTANTIALLY COMPLETELY REGENERATE THE ALKALINE SOLUTION AND TO OXIDIZE THE SULFUR COMPONENTS TO DISULFIDES IN A REGENERATION ZONE, SAID REACTIONS BEING CATALYZED BY THE PHTHALOCYANINE CATALYST, WITHDRAWING THEREFROM REGENERATED ALKALINE SOLUTION CONTAINING DISULFIDES, PHTHALOCYANINE CATALYST AND ENTRAINED OXYGEN, SEPARATING SAID REGENERATED SOLUTION INTO A DISULFIDE PHASE AND AN ALKALINE SOLUTION PHASE, REDUCING THE OXYGEN CONTENT OF A FIRST PORTION OF THE SEPARATED AL-
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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |