Patent US3006729A successfully refreshed from Google Patents.
US3006729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of high concentration carbon monoxide from copper liquor used to purify ammonia synthesis gas
Assignee: Phillips Petroleum Co
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Filing: 1958-06-09
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Granted: 1961-10-31
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Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Robert B Moore
- 👤 Vernon T Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:52
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/124; C10K1/127; C01; C01B; C01B3/00; C01B3/02; C01B3/025; C01B32/00; C01B32/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A METHOD FOR THE RECOVERY OF A GAS RICH IN CARBON MONOXIDE FROM A COPPER-CONTAINING SOLUTION, WHICH HAS BEEN USED TO ABSORB CARBON MONOXIDE FROM AMMONIA SYNTHESIS GAS, WHICH CONSISTS ESSENTIALLY OF CONTACTING A COPPER-CONTAINING SOLUTION WITH A SYNTHESIS GAS UNDER CARBON MONOXIDE ABSORBING CONDITIONS INCLUDING A PRESSURE OF THE ORDER OF APPROXIMATELY 2,000 POUNDS PER SQUARE INCH GAGE, CONTAINING THE USED SOLUTION AT SAID PRESSURE, SAID USED SOLUTION CONTAINING SUBSTANTIAL AMOUNTS OF HYDROGEN AND NITROGEN AND SMALL AMOUNTS OF CARBON MONOXIDE AND CARBON DIOXIDE AS WELL AS TRACES OF OTHER GASES, FLASHING SAID USED SOLUTION AT A PRESSURE OF THE ORDER OF 40 POUNDS PER SQUARE INCH GAGE REMOVING THEREFROM A FIRST STREAM OF GASES CONTAINING A SUBSTANTIAL AMOUNT OF HYDROGEN AND NITROGEN AND CARBON MONOXIDE WHICH ARE UNAVOIDABLY ABSORBED DURING SAID CONTACTING, THEN FURTHER FLASHING THE ONCE-FLASHED SOLUTION AT ABOUT ZERO POUNDS PER SQUARE INCH GAGE OBTAINING A SECOND STREAM OF GASES CONTAINING SUBSTANTIALLY MORE CARBON MONOXIDE AND SUBSTANTIALLY LESS HYDROGEN AND NITROGEN THAN SAID FIRST STREAM OF GASES AND THEN RECOVERING GASES REMAINING IN THE TWICEFLASHED SOLUTION OBTAINING A THIRD STREAM OF GASES RICH IN CARBON MONOXIDE AND CONTAINING ONLY SMALL QUANTITIES OF HYDROGEN AND NITROGEN.
Claim 2
Independent Claim
199 words
A METHOD FOR THE RECOVERY OF A GAS RICH IN CARBON MONOXIDE FROM A COPPER-CONTAINING SOLUTION, WHICH HAS BEEN USED TO ABSORB CARBON MONOXIDE FROM AMMONIA SYNTHESIS GAS, WHICH CONSISTS ESSENTIALLY OF CONTACTING A COPPER-CONTAINING SOLUTION WITH A SYNTHESIS GAS UNDER CARBON MONOXIDE ABSORBING CONDITIONS INCLUDING A PRESSURE OF THE ORDER OF APPROXIMATELY 2,000 POUNDS PER SQUARE INCH GAGE, CONTAINING THE USED SOLUTION AT SAID PRESSURE, SAID USED SOLUTION CONTAINING SUBSTANTIAL AMOUNTS OF HYDROGEN AND NITROGEN AND SMALL AMOUNTS OF CARBON MONOXIDE AND CARBON DIOXIDE AS WELL AS TRACES OF OTHER GASES, FLASHING SAID USED SOLUTION AT A PRESSURE OF THE ORDER OF 40 POUNDS PER SQUARE INCH GAGE REMOVING THEREFROM A FIRST STREAM OF GASES CONTAINING A SUBSTANTIAL AMOUNT OF HYDROGEN AND NITROGEN AND CARBON MONOXIDE WHICH ARE UNAVOIDABLY ABSORBED DURING SAID CONTACTING, THEN FURTHER FLASHING THE ONCE-FLASHED SOLUTION AT ABOUT ZERO POUNDS PER SQUARE INCH GAGE OBTAINING A SECOND STREAM OF GASES CONTAINING SUBSTANTIALLY MORE CARBON MONOXIDE AND SUBSTANTIALLY LESS HYDROGEN AND NITROGEN THAN SAID FIRST STREAM OF GASES AND THEN RECOVERING GASES REMAINING IN THE TWICEFLASHED SOLUTION OBTAINING A THIRD STREAM OF GASES RICH IN CARBON MONOXIDE AND CONTAINING ONLY SMALL QUANTITIES OF HYDROGEN AND NITROGEN.
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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |