US3901668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of oxygen from high temperature steam
Assignee: Sun Ventures Inc
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Filing: 1973-11-05
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Granted: 1975-08-26
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Expires: 1993-11-05
Abstract
Abstract A process for preparing oxygen from steam by dissociating steam into hydrogen and oxygen at a temperature above 1,500*C., passing the dissociated steam through a first chamber having a wall in common with a second chamber, which common wall is permeable to hydrogen, and cooling the gaseous effluent from said first chamber to yield an oxygen rich stream.
Inventors
- 👤 Walter H Seitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:31
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; B; B01; B01D; B01D53/00; B01D53/22; C01B13/00; C01B13/02; C01B13/0203; C01B13/0207; C01B3/02; C01B3/04; C01B3/042; C01B3/045; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/041; C01B2203/0465; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A PROCESS FOR PREPARING OXYGEN FROM STEAM WHICH COMPRISES DISSOCIATING STEAM INTO HYDRGEN AND OXYGEN BY HEATING IT AT A TEMPERATURE ABOVE 1,500*C., PASSING THE DISSOCIATED STEAM THROUGH A FIRST CHAMBER HAVING A WALL IN COMMON WITH A SECOND CHAMBER, WHICH COMMON WALL IS PERMEABLE TO HYDROGEN AND THROUGH WHICH WALL SAID HYDROGEN PASSES BY DIFFUSION AT STEAM DISSOCIATION TEMPERATURE TO SAID SECOND CHAMBER, SWEEPING SAID SECOND CHAMBER WITH A GAS TO REMOVE SAID PERMEATED HYDROGEN, AND COOLING THE GASEOUS EFFUENT FROM SAID FIRST CHAMBER TO YIELD AN OXYGEN RICH STREAM.
Claim 2
Dependent Claim
91 words
A PROCESS FOR PREPARING OXYGEN FROM STEAM WHICH COMPRISES DISSOCIATING STEAM INTO HYDRGEN AND OXYGEN BY HEATING IT AT A TEMPERATURE ABOVE 1,500*C., PASSING THE DISSOCIATED STEAM THROUGH A FIRST CHAMBER HAVING A WALL IN COMMON WITH A SECOND CHAMBER, WHICH COMMON WALL IS PERMEABLE TO HYDROGEN AND THROUGH WHICH WALL SAID HYDROGEN PASSES BY DIFFUSION AT STEAM DISSOCIATION TEMPERATURE TO SAID SECOND CHAMBER, SWEEPING SAID SECOND CHAMBER WITH A GAS TO REMOVE SAID PERMEATED HYDROGEN, AND COOLING THE GASEOUS EFFUENT FROM SAID FIRST CHAMBER TO YIELD AN OXYGEN RICH STREAM.
Claim 3
Dependent Claim
104 words
A process for preparing oxygen from steam which comprises dissociating steam into hydrogen and oxygen by heating at a temperature between about 1,800*C. and 2,200*C., passing the dissociated steam through a first chamber having a wall in common with a second chamber, which common wall comprises a material which is permeable to hydrogen and which melts above about 2, 500*C., and through which wall said hydrogen passes by diffusion at steam dissociation temperature to said second chamber, sweeping said second chamber with a gas to remove said permeated hydrogen, and cooling the gaseous effluent from said first chamber to yield a oxygen rich stream.
Claim 4
Dependent Claim
104 words
A process for preparing oxygen from steam which comprises dissociating steam into hydrogen and oxygen by heating at a temperature between about 1,800*C. and 2,200*C., passing the dissociated steam through a first chamber having a wall in common with a second chamber, which common wall comprises a material which is permeable to hydrogen and which melts above about 2, 500*C., and through which wall said hydrogen passes by diffusion at steam dissociation temperature to said second chamber, sweeping said second chamber with a gas to remove said permeated hydrogen, and cooling the gaseous effluent from said first chamber to yield a oxygen rich stream.
Claim 5
Dependent Claim
14 words
The process of claim 2 where the common wall permeable to hydrogen is iridium.
Claim 6
Dependent Claim
14 words
The process of claim 2 where the common wall permeable to hydrogen is tungsten.
References Cited (Backward Citations)
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Cited
US3155467A
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US3278268A
Cited
US3241293A
Cited
US3365276A
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US3350176A
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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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |