US2855278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage of ammonia in aqueous solution
Assignee: Phillips Petroleum Co
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Filing: 1955-04-29
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Granted: 1958-10-07
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Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Loyd W Adams
- 👤 Russell K Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:46
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD FOR THE STORAGE OF AQUA AMMONIA IN A STORAGE ZONE AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, WHICH METHOD COMPRISES: CIRCULATING AQUEOUS AMMONIA FROM SAID STORAGE ZONE THROUGH A REFRIGERATION ZONE SO AS TO MAINTAIN A PREDETERMINED TEMPERATURE IN SAID STORAGE ZONE; CONTACTING EXCESS AMMONIA VAPORS FROM SAID STORAGE ZONE WITH AN AQUA AMMONIA ABSORBENT IN A FIRST ABSORPTION ZONE; CONTACTING RESIDUAL AMMONIA VAPORS FROM SAID FIRST ABSORPTION ZONE WITH WATER IN A SECOND ABSORPTION ZONE; PASSING WATER CONTAINING DISSOLVED AMMONIA FROM SAID SECOND ABSORPTION ZONE TO SAID FIRST ABSORPTION ZONE AS SAID AQUA AMMONIA ABSORBENT; AND PASSING ENRICHED ABSORBENT FROM SAID FIRST ABSORPTION ZONE TO SAID STORAGE ZONE.
Claim 2
Independent Claim
108 words
A METHOD FOR THE STORAGE OF AQUA AMMONIA IN A STORAGE ZONE AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, WHICH METHOD COMPRISES: CIRCULATING AQUEOUS AMMONIA FROM SAID STORAGE ZONE THROUGH A REFRIGERATION ZONE SO AS TO MAINTAIN A PREDETERMINED TEMPERATURE IN SAID STORAGE ZONE; CONTACTING EXCESS AMMONIA VAPORS FROM SAID STORAGE ZONE WITH AN AQUA AMMONIA ABSORBENT IN A FIRST ABSORPTION ZONE; CONTACTING RESIDUAL AMMONIA VAPORS FROM SAID FIRST ABSORPTION ZONE WITH WATER IN A SECOND ABSORPTION ZONE; PASSING WATER CONTAINING DISSOLVED AMMONIA FROM SAID SECOND ABSORPTION ZONE TO SAID FIRST ABSORPTION ZONE AS SAID AQUA AMMONIA ABSORBENT; AND PASSING ENRICHED ABSORBENT FROM SAID FIRST ABSORPTION ZONE TO SAID STORAGE ZONE.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |