US3034980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing naphthenic acids from hydrocarbons
Assignee: Sunoco Inc
•
Filing: 1957-07-15
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Granted: 1962-05-15
•
Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Earl M Honeycutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:10
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/10; C10G53/00; C10G53/02; C10G53/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A PROCESS FOR REMOVING NAPHTHENIC ACIDS FROM HYDROCARBONS WHICH COMPRISES CONTACTING IN A REFINING ZONE HYDROCARBON VAPORS CONTAINING NAPHTHENIC ACIDS WITH A LIQUID ALKALINE MATERIAL TO REACT THE NAPHTHENIC ACIDS WITH ALKALI AND PRODUCE ALKALI METAL NAPHTHENATES IN THE LIQUID ALKALI MATERIAL, REMOVING THE LIQUID ALKALINE MATERIAL FROM THE REFINING ZONE, CONTACTING THE REMOVED MATERIAL WITH MINERAL ACID TO LIBERATE NAPHTHENIC ACIDS, SEPARATING THE LIBERATED NAPHTHENIC ACIDS FROM THE AQUEOUS ALKALINE MATERIAL, REMOVING HYDROCARBON VAPORS CONTAINING A SMALL AMOUNT OF ENTRAINED ALKALI METAL NAPHTHENATES FROM THE REFINING ZONE, CONDENSING HYDROCARBON OIL FROM THE REMOVED VAPORS IN A RECTIFYING ZONE, AND CONTACTING THE RESULTING OIL WITH A SOLID ADSORBENT AT A TEEMPERATURE IN THE RANGE FROM 400 TO 700*F. TO REMOVE ALKALI METAL NAPHTHENATES, THE IMPROVEMENT WHICH
Claim 2
Dependent Claim
127 words
IN A PROCESS FOR REMOVING NAPHTHENIC ACIDS FROM HYDROCARBONS WHICH COMPRISES CONTACTING IN A REFINING ZONE HYDROCARBON VAPORS CONTAINING NAPHTHENIC ACIDS WITH A LIQUID ALKALINE MATERIAL TO REACT THE NAPHTHENIC ACIDS WITH ALKALI AND PRODUCE ALKALI METAL NAPHTHENATES IN THE LIQUID ALKALI MATERIAL, REMOVING THE LIQUID ALKALINE MATERIAL FROM THE REFINING ZONE, CONTACTING THE REMOVED MATERIAL WITH MINERAL ACID TO LIBERATE NAPHTHENIC ACIDS, SEPARATING THE LIBERATED NAPHTHENIC ACIDS FROM THE AQUEOUS ALKALINE MATERIAL, REMOVING HYDROCARBON VAPORS CONTAINING A SMALL AMOUNT OF ENTRAINED ALKALI METAL NAPHTHENATES FROM THE REFINING ZONE, CONDENSING HYDROCARBON OIL FROM THE REMOVED VAPORS IN A RECTIFYING ZONE, AND CONTACTING THE RESULTING OIL WITH A SOLID ADSORBENT AT A TEEMPERATURE IN THE RANGE FROM 400 TO 700*F. TO REMOVE ALKALI METAL NAPHTHENATES, THE IMPROVEMENT WHICH
References Cited (Backward Citations)
US968092A
Cited
US1022347A
Cited
US1132054A
Cited
US2390272A
Cited
US2816933A
Cited
US2730506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |