US2926751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic carbonate process for carbon dioxide
Assignee: Fluor Corp
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Filing: 1958-09-22
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Granted: 1960-03-01
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Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Kohl
- 👤 Frederick E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; B01D53/1456; B01D53/1475; C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P20/00; Y02P20/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS OF RECOVERING CARBON DIOXIDE FROM A FEED GAS MIXTURE CONTAINING CARBON DIOXIDE AND A COMPONENT OF THE CONSISTING OF HYDROGEN, HYDROGEN SULFIDE, HYDROCARBONS, NITROGEN, MOISTURE AND AIR THAT INCLUDES PASSING THE FEED GAS THROUGH AN ABSORPTION ZONE AT SUPERATMOSPHERIC PRESSURE IN COUNTER-FLOWING CONTACT WITH PROPYLENE CARBONATE AND THEREBY PREFERENTIALLY ABSORBING CARBON DIOXIDE IN THE CARBONATE, REMOVING UNABSORBED COMPONENTS OF THE FEED GAS FROM SAID ZONE, SEPARATELY REMOVING THEREFROM A STREAM OF THE RICH CARBONATE AND REDUCING THE PRESSURE THERETO TO FLASHOFF CARBON DIOXIDE, AND THEREAFTER RECYLING THE LEAN CARBONATE TO SAID ABSORPTION ZONE FOR COUNTER-FLOW CONTACT WITH SAID FEED GAS.
Claim 2
Dependent Claim
102 words
THE PROCESS OF RECOVERING CARBON DIOXIDE FROM A FEED GAS MIXTURE CONTAINING CARBON DIOXIDE AND A COMPONENT OF THE CONSISTING OF HYDROGEN, HYDROGEN SULFIDE, HYDROCARBONS, NITROGEN, MOISTURE AND AIR THAT INCLUDES PASSING THE FEED GAS THROUGH AN ABSORPTION ZONE AT SUPERATMOSPHERIC PRESSURE IN COUNTER-FLOWING CONTACT WITH PROPYLENE CARBONATE AND THEREBY PREFERENTIALLY ABSORBING CARBON DIOXIDE IN THE CARBONATE, REMOVING UNABSORBED COMPONENTS OF THE FEED GAS FROM SAID ZONE, SEPARATELY REMOVING THEREFROM A STREAM OF THE RICH CARBONATE AND REDUCING THE PRESSURE THERETO TO FLASHOFF CARBON DIOXIDE, AND THEREAFTER RECYLING THE LEAN CARBONATE TO SAID ABSORPTION ZONE FOR COUNTER-FLOW CONTACT WITH SAID FEED GAS.
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |