US3762133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of components from gas mixtures
Assignee: United States Atomic Energy Commission
•
Filing: 1971-10-15
•
Granted: 1973-10-02
•
Expires: 1991-10-15
Abstract
Abstract A process for the removal, from gaseous mixtures, of a desired component selected from oxygen, iodine, methyl iodide, and lower oxides of carbon, nitrogen, and sulfur. The gaseous mixture is contacted with a liquid fluorocarbon in an absorption zone maintained at superatmospheric pressure to preferentially absorb the desired component in the fluorocarbon. Unabsorbed constituents of the gaseous mixture are withdrawn from the absorption zone. Liquid fluorocarbon enriched in the desired component is withdrawn separately from the zone, following which the desired component is recovered from the fluorocarbon absorbent.
Inventors
- 👤 J Merriman
- 👤 J Pashley
- 👤 M Stephenson
- 👤 D Dunthorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1487; B01D53/1493; B01D53/34; B01D53/46; B01D53/60; B01D53/68; B01D53/70; Y; Y02; Y02C; Y02C20/00; Y02C20/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
The process of claim 1 wherein said stream enriched in said component is passed through a gas-stripping zone at a lower pressure than said absorption zone in flowing contact with a gaseous stripping agent to desorb gas from said stream, thereby at least partially regenerating said liquid fluorocarbn, and recycling said at least partially regenerated fluorocarbon to said absorption zone for flowing contact with said feed gas mixture.
Claim 2
Dependent Claim
25 words
The process of claim 2 wherein said gaseous stripping agent enriched in the gas desorbed from said stream is separately withdrawn from said gas-stripping zone.
Claim 3
Dependent Claim
54 words
The process of claim 2 wherein, prior to passage through said gas-stripping zone, said stream enriched in said component is passed through a fractionating zone at a pressure intermediate of the respective pressures in said absorption zone and said gas-stripping zone to preferentially desorb from said stream gases less soluble therein than said component.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein said liquid fluorocarbon is a member selected from the group consisting of alkane and cycloalkane derivatives having at least one fluorine atom; perfluoroamines; and perfluoroethers.
Claim 5
Dependent Claim
112 words
The process of claim 1 wherein said component is selected from the group consisting of oxygen and lower oxides of carbon, nitrogen, and sulfur and wherein said process includes the additional steps of: a. passing said stream of liquid fluorocarbon enriched in said component through a reduced-pressure zone to desorb from said stream dissolved gases less soluble therein than said component; b. passing the effluent liquid fluorocarbon from said reduced-pressure zone through a stripping zone at a pressure below that of said absorption zone in flowing contact with a gaseous stripping agent to desorb said component from said effluent liquid fluorocarbon; and c. recovering the resulting component-rich vapor from said stripping zone.
Claim 6
Dependent Claim
31 words
The process of claim 6 wherein said liquid fluorocarbon is a member selected from the group consisting of alkane and cycloalkane derivatives having at least one fluorine atom; perfluoroamines; and perfluoroethers.
Claim 7
Dependent Claim
117 words
The process of claim 1 wherein said component is selected from the group consisting of iodine and methyl iodide and wherein said process includes the additional steps of: a. passing the enriched stream of liquid fluorocarbon through a reduced-pressure zone to desorb from said stream a part of the dissolved gases less soluble therein than said component; b. passing the effluent liquid fluorocarbon from said reduced-pressure zone through a stripping zone at a pressure below that of said absorption zone in flowing contact with a gaseous stripping agent to desorb additional of said gases less soluble therein than said component; and c. separately withdrawing from said stripping zone a stream of liquid fluorocarbon enriched in said component.
Claim 8
Dependent Claim
26 words
The process of claim 8 wherein said stream of liquid fluorocarbon enriched in said component is processed to recover at least part of the iodine therein.
Claim 9
Dependent Claim
31 words
The process of claim 8 wherein said liquid fluorocarbon is a member selected from the group consisting of aLkane and cycloalkane derivatives having at least one fluorine atom; perfluoroamines; and perfluoroethers.
References Cited (Backward Citations)
US3015369A
Cited
US3140932A
Cited
US3121624A
Cited
US3266219A
Cited
US3247649A
Cited
US3658467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |