US3850593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for the separation of inert gases from gas mixture containing carbon dioxide
Assignee: Forschungszentrum Jülich
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Filing: 1972-06-23
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Granted: 1974-11-26
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Expires: 1992-06-23
Abstract
Abstract A system for the separation of inert gases, which may be radioactive, from carbon dioxide gas mixtures wherein the gas mixture is washed with liquid carbon dioxide in which the inert gases, expecially krypton and xenon are highly soluble, whereupon the radioactive inert gases are separated from the liquid carbon dioxide in a rectification column.
Inventors
- 👤 H Beaujean
- 👤 M Laser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:23
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0266; C; C01; C01B; C01B23/00; F25J3/028; F25J2215/00; F25J2215/34; F25J2215/36; F25J2220/00; F25J2220/80; F25J2220/82; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P20/00; Y02P20/151; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/925; Y10S62/928
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
APROCESS FOR THE REMOVAL OF INERT GASES FROM A GAS STREAM CONTAINING SAME TOGETHER WITH CARBON DIOXDE, COMPRISING THE STEPS OF INTIMATELY CONTACTING SAID GAS STREAM WITH LIQUID CARBON DIOXIDE TO SOLUBILZE INERT GAS IN THE LIQUID CARBON DIOXIDE AND PRODUCE A LIQUID PHASE. RECTIFYING SAID LIQUID PHASE TO SEPARATE A RACTONRICH IN THE INERT GAS THEREFROM AND TO PRODUCE A LIQUID CARBON DIOXIDE FRACTION AND RECIRCULATING THE LIQUID CATBON DIOXIDE FRACTION INTO INTIMATE CONTENT WITH FURTHER QUANTITIES OF THE GAS STREAM.
Claim 2
Dependent Claim
82 words
APROCESS FOR THE REMOVAL OF INERT GASES FROM A GAS STREAM CONTAINING SAME TOGETHER WITH CARBON DIOXDE, COMPRISING THE STEPS OF INTIMATELY CONTACTING SAID GAS STREAM WITH LIQUID CARBON DIOXIDE TO SOLUBILZE INERT GAS IN THE LIQUID CARBON DIOXIDE AND PRODUCE A LIQUID PHASE. RECTIFYING SAID LIQUID PHASE TO SEPARATE A RACTONRICH IN THE INERT GAS THEREFROM AND TO PRODUCE A LIQUID CARBON DIOXIDE FRACTION AND RECIRCULATING THE LIQUID CATBON DIOXIDE FRACTION INTO INTIMATE CONTENT WITH FURTHER QUANTITIES OF THE GAS STREAM.
Claim 3
Dependent Claim
23 words
The process defined in claim 1 wherein said gas stream is contacted with liquid carbon dioxide at a temperature substantially -50*C and 30*C.
Claim 4
Dependent Claim
22 words
The process defined in claim 2 wherein said gas stream consists predominantly of carbon dioxide and said temperature is approximately room temperature.
Claim 5
Dependent Claim
40 words
The process defined in claim 2 wherein said gas stream contains at least one other component in addition to carbon dioxide and wherein said gas stream is contacted with said liquid carbon dioxide at a temperature between -40*C and -20*C.
Claim 6
Dependent Claim
24 words
The process defined in claim 4 further comprising the step of removing said other component from the liquid phase prior to the rectification thereof.
Claim 7
Dependent Claim
72 words
The process defined in claim 1 wherein said gas stream is intermittently contacted with said liquid carbon dioxide at a temperature between -50*C and 30*C bypassing said gas stream upwardly through a packed column in counterflow to liquid carbon dioxide, discharging a gas phase consisting essentially of said mixture free from inert gas at an upper end of said column, and recovering said liquid phase at the lower end of said column.
Claim 8
Dependent Claim
37 words
The process defined in claim 6 further comprising the step of compressing said gas stream to a pressure greater than that of said column and cooling the compressed gas stream prior to introducing it into said column.
Claim 9
Dependent Claim
72 words
The process defined in claim 7 wherein said liquid phase is rectified by boiling the liquid phase in a packed rectificatIon column, refluxing vapors at the upper end of said rectification column and drawing a liquid carbon dioxide fraction substantially free from inert gas from the bottom of said rectification column for washing of said gas stream, the fraction containing the inert gas being recovered from the tower of said rectification column.
Claim 10
Dependent Claim
33 words
The process defined in claim 8, further comprising passing said liquid phase into a further rectification column for removing nitrogen therefrom prior to introducing said liquid phase into the first mentioned rectification column.
Claim 11
Dependent Claim
39 words
The process defined in claim 8 wherein said gas stream is obtained by combustion of a product containing carbon and removed from a nuclear reactor, said inert gas being selected from the group which consists of krypton and xenon.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |