US2997366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purification
Assignee: California Research LLC
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Filing: 1959-09-30
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Granted: 1961-08-22
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Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 Owens Edgar James
- 👤 Dwight L Teeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:38
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/122; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
IN A PROCESS FOR THE REMOVAL OF SLIGHTLY ACIDIC GASES SELECTED FROM THE GROUP CONSISTING OF CO2 AND H2S FROM A GASEOUS STREAM CONTAINING AT LEAST ONE OF SAID GASES WHICH COMPRISES MAINTAINING AN AQUEOUS POTASSIUM CARBONATE SCRUBBING SOLUTION IN CONTINUOUS CIRCULATION BETWEEN AN ABSORPTION ZONE AND A REGENERATION ZONE, CONTACTING SAID GAS WITH SAID SOLUTION IN THE ABSORPTION ZONE AT AN ELEVATED PRESSURE OF 200-500 P.S.I.G. AND A TEMPERATURE BETWEEN 100 AND 300*F. WHEREBY ACIDIC GASES ARE ABSORBED, AND PASSING THE ENRICHED SOLUTION TO THE REGENERATION ZONE MAINTAINED AT A SUBSTANTIALLY REDUCED PRESSURE OF 1-3 ATMOSPHERES AND A TEMPERATURE BETWEEN 150 AND 300*F., WHEREBY ABSORBED GASES ARE RELEASED FROM SAID SOLUTION, THE IMPROVEMENT OF REMOVING NON-REGENERABLE BY-PRODUCTS INCLUDING SULFATES FROM THE REGENERATED CIRCULATING SOLUTION BY PASSING A PORTION OF SAID SOLUTION TO A SETTLING ZONE MAINTAINED AT A TEMPERATURE SUFFICIENTLY BELOW THE LOWEST TEMPERATURE IN SAID ABSORPTION AND REGENERATION ZONES TO CAUSE SAID BY-PRODUCTS TO COLLECT AS A PRECIPITATE BUT ABOVE THE TEMPERATURE AT WHICH A SUBSTANTIAL AMOUNT OF KHCO3 IS PRECIPITATED AND REMOVING THE PRECIPITATED BY-PRODUCTS FROM SAID SETTLING ZONE.
Claim 2
Dependent Claim
182 words
IN A PROCESS FOR THE REMOVAL OF SLIGHTLY ACIDIC GASES SELECTED FROM THE GROUP CONSISTING OF CO2 AND H2S FROM A GASEOUS STREAM CONTAINING AT LEAST ONE OF SAID GASES WHICH COMPRISES MAINTAINING AN AQUEOUS POTASSIUM CARBONATE SCRUBBING SOLUTION IN CONTINUOUS CIRCULATION BETWEEN AN ABSORPTION ZONE AND A REGENERATION ZONE, CONTACTING SAID GAS WITH SAID SOLUTION IN THE ABSORPTION ZONE AT AN ELEVATED PRESSURE OF 200-500 P.S.I.G. AND A TEMPERATURE BETWEEN 100 AND 300*F. WHEREBY ACIDIC GASES ARE ABSORBED, AND PASSING THE ENRICHED SOLUTION TO THE REGENERATION ZONE MAINTAINED AT A SUBSTANTIALLY REDUCED PRESSURE OF 1-3 ATMOSPHERES AND A TEMPERATURE BETWEEN 150 AND 300*F., WHEREBY ABSORBED GASES ARE RELEASED FROM SAID SOLUTION, THE IMPROVEMENT OF REMOVING NON-REGENERABLE BY-PRODUCTS INCLUDING SULFATES FROM THE REGENERATED CIRCULATING SOLUTION BY PASSING A PORTION OF SAID SOLUTION TO A SETTLING ZONE MAINTAINED AT A TEMPERATURE SUFFICIENTLY BELOW THE LOWEST TEMPERATURE IN SAID ABSORPTION AND REGENERATION ZONES TO CAUSE SAID BY-PRODUCTS TO COLLECT AS A PRECIPITATE BUT ABOVE THE TEMPERATURE AT WHICH A SUBSTANTIAL AMOUNT OF KHCO3 IS PRECIPITATED AND REMOVING THE PRECIPITATED BY-PRODUCTS FROM SAID SETTLING ZONE.
References Cited (Backward Citations)
US2886405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |