US2901403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground storage of ammonia and its recovery
Assignee: Phillips Petroleum Co
•
Filing: 1954-02-15
•
Granted: 1959-08-25
•
Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Loyd W Adams
- 👤 John E Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:55
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/003; B; B65; B65G; B65G5/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOD FOR STORING LIQUID AMMONIA AND RECOVERING SAME FROM THE STORAGE COMPRISING INTRODUCING LIQUID AMMONIA INTO AN UNDERGROUND STORAGE SPACE IN A SUBTERRANEAN SALT FORMATION, INTRODUCING A SYNTHETIC AMMONIA PLANT OFF GAS INTO SAID STORAGE SPACE UNDER PRESSURE, WITHDRAWING A LIQUID COMPRISING LIQUID AMMONIA FROM SAID STORAGE SPACE BY DISPLACEMENT WITH SAID GAS, INTRODUCING THE WITHDRAWN LIQUID COMPRISING LIQUID AMMONIA INTO A FRACTIONATING STILL, INTRODUCING WATER INTO SAID STILL, ADDING REBOILING HEAT TO THE KETTLE SECTION OF SAID STILL, REMOVING VAPORS FROM THE TOP OF SAID STILL, CONDENSING SAID VAPORS, DIVIDING THE CONDENSATE INTO TWO PORTIONS, RETURNING ONE PORTION TO THE UPPER PORTION OF SAID STILL AS REFLUX, REMOVING THE OTHER PORTION AS THE MAIN PRODUCT OF THE PROCESS AND REMOVING A SALT BRINE FROM THE KETTLE OF SAID STILL.
Claim 2
Independent Claim
131 words
A METHOD FOR STORING LIQUID AMMONIA AND RECOVERING SAME FROM THE STORAGE COMPRISING INTRODUCING LIQUID AMMONIA INTO AN UNDERGROUND STORAGE SPACE IN A SUBTERRANEAN SALT FORMATION, INTRODUCING A SYNTHETIC AMMONIA PLANT OFF GAS INTO SAID STORAGE SPACE UNDER PRESSURE, WITHDRAWING A LIQUID COMPRISING LIQUID AMMONIA FROM SAID STORAGE SPACE BY DISPLACEMENT WITH SAID GAS, INTRODUCING THE WITHDRAWN LIQUID COMPRISING LIQUID AMMONIA INTO A FRACTIONATING STILL, INTRODUCING WATER INTO SAID STILL, ADDING REBOILING HEAT TO THE KETTLE SECTION OF SAID STILL, REMOVING VAPORS FROM THE TOP OF SAID STILL, CONDENSING SAID VAPORS, DIVIDING THE CONDENSATE INTO TWO PORTIONS, RETURNING ONE PORTION TO THE UPPER PORTION OF SAID STILL AS REFLUX, REMOVING THE OTHER PORTION AS THE MAIN PRODUCT OF THE PROCESS AND REMOVING A SALT BRINE FROM THE KETTLE OF SAID STILL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |