US4239507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separation of a gas from a gas mixture
Assignee: Individual
•
Filing: 1978-09-27
•
Granted: 1980-12-16
•
Expires: 1998-09-27
Abstract
Abstract A gas which is the most readily condensable of the gases of a mixture is separated by passing the mixture in contact with at least one microporous barrier having a permeability of 100×10 -7 to 1000×10 -7 moles of air/cm 2 /min./cmHg, a pore thickness of 10 to 100 A, by adjusting the partial pressure of the most readily condensable gas and/or the temperature of the gas mixture as a function of the mean pore radius of the barrier in order to ensure capillary condensation of the condensable gas at the pore inlets of the barrier and to induce a flow of condensed gas along the pores and across the barrier, the gas which has thus condensed being then collected.
Inventors
- 👤 Robert Benoit
- 👤 Jacques Machefer
- 👤 Jacques Mauvisseau
- 👤 Pierre Plurien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/225; B01D53/226; B01D5/00; B01D53/002; B01D57/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A method of separation of a gas from a gas mixture in which said gas is the most readily condensable of the gases of said mixture, wherein said gas mixture is passed in contact with at least one microporous barrier having a permeability of 100×10 -7 to 1000×10 -7 moles of air/cm 2 /min./cmHg, a pore radii of between 10 to 100 A, the partial pressure of said most readily condensable gas and/or the temperature of said gas mixture is adjusted as a function of the mean pore radius of said barrier so as to ensure capillary condensation of said condensable gas at the pore inlets of said barrier and to induce a flow of said condensed gas along to pores and across said barrier, and the gas which has thus condensed is then collected.
Claim 2
Independent Claim
135 words
A method of separation of a gas from a gas mixture in which said gas is the most readily condensable of the gases of said mixture, wherein said gas mixture is passed in contact with at least one microporous barrier having a permeability of 100×10 -7 to 1000×10 -7 moles of air/cm 2 /min./cmHg, a pore radii of between 10 to 100 A, the partial pressure of said most readily condensable gas and/or the temperature of said gas mixture is adjusted as a function of the mean pore radius of said barrier so as to ensure capillary condensation of said condensable gas at the pore inlets of said barrier and to induce a flow of said condensed gas along to pores and across said barrier, and the gas which has thus condensed is then collected.
Claim 3
Dependent Claim
15 words
A method according to claim 1, wherein the barrier or barriers are of ceramic material.
Claim 4
Dependent Claim
14 words
A method according to claim 1, wherein the barrier or barriers are of metal.
Claim 5
Dependent Claim
15 words
A method according to claim 1, wherein the barrier or barriers are of fluorinated polymer.
Claim 6
Dependent Claim
26 words
The application of the method according to any one of claims 1 to 4 to the purification of uranium hexafluoride derived from an isotopic enrichment plant.
References Cited (Backward Citations)
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US2980532A
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US3203086A
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GB1017637A
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US3420069A
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US3614855A
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US3651618A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |