Patent US3852180A successfully refreshed from Google Patents.
US3852180A
Expired / Lapsed
US
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Apparatus for co{11 {11 conversion to methane
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1973-03-19
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Granted: 1974-12-03
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Expires: 1993-03-19
Abstract
Abstract A process of fixation and conversion of carbon dioxide from the atmosphere or other sources to produce methane and oxygen. Carbon dioxide is scrubbed from a CO2-containing source and separated by process of chemical concentration. A special cell is provided in which hydrogen is produced and reacted with the separated CO2 at methanation conditions to produce methane.
Inventors
- 👤 D Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:00
CPC Classifications
C; C10; C10L; C10L3/00; C10L3/06; C10L3/08; C07; C07C; C07C1/00; C07C1/02; C07C1/12; C25; C25B; C25B1/00; C25B1/01; C25B1/23; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
AN APPARATUS FOR SIMULTANEOUS ELECTROLYSIS OF WATER AND METHANATION OF CO2 COMPRISING IN COMBINATION: A. A HOUSING, B. AN EXTERNAL DC POWER SOURCE, C. A CATHODE AND AN ANODE DISPOSED IN SAID HOUSING CONNECTED TO THE EXTERNAL DC POWER SOURCE, SAID CATHODE BEING ADAPTED TO ELECTROCHEMICALLY EVOLVE HYDROGEN THEREFROM. D. SAID ANODE AND CATHODE ADAPTED TO HAVE AN ELECTROLYTE DISPOSED BETWEEN THEM AND E. MEANS FOR SUPPLYING WATER TO SAID ELECTROLYTE, F. MEANS FOR SEPARATING CO2 FROM A GAS STREAM CONTAINING CO2 TO PRODUCE A CO2 CONTAINING GAS STREAM RELATIVELY
Claim 2
Independent Claim
90 words
AN APPARATUS FOR SIMULTANEOUS ELECTROLYSIS OF WATER AND METHANATION OF CO2 COMPRISING IN COMBINATION: A. A HOUSING, B. AN EXTERNAL DC POWER SOURCE, C. A CATHODE AND AN ANODE DISPOSED IN SAID HOUSING CONNECTED TO THE EXTERNAL DC POWER SOURCE, SAID CATHODE BEING ADAPTED TO ELECTROCHEMICALLY EVOLVE HYDROGEN THEREFROM. D. SAID ANODE AND CATHODE ADAPTED TO HAVE AN ELECTROLYTE DISPOSED BETWEEN THEM AND E. MEANS FOR SUPPLYING WATER TO SAID ELECTROLYTE, F. MEANS FOR SEPARATING CO2 FROM A GAS STREAM CONTAINING CO2 TO PRODUCE A CO2 CONTAINING GAS STREAM RELATIVELY
Claim 3
Dependent Claim
15 words
An apparatus as in claim 1 which includes means for exhausting oxygen from said anode.
Claim 4
Dependent Claim
26 words
An apparatus as in claim 1 which includes means for maintaining said electrolyte and said cathode in a temperature range of from about 250*F to 2,000*F.
Claim 5
Dependent Claim
30 words
An apparatus as in claim 3 wherein said temperature maintaining means includes heat exchange means for transfer of heat from said electrolyte and/or said cathode to said CO2 separation means.
Claim 6
Dependent Claim
68 words
An apparatus as in claim 1 wherein said CO2 separation means includes: a. means for contacting the CO2 containing gas stream with a carbon dioxide selective sorbent to produce a CO2 containing sorbent relatively free of oxygen; and, b. means for contacting the CO2 containing sorbent with a relatively O2 free gaseous stream to remove CO2 from said sorbent and produce an O2 free, CO2 containing gas stream.
Claim 7
Dependent Claim
30 words
An apparatus as in claim 5 which includes means for transferring heat from said electrolyte and/or said cathode to said CO2 separation means to remove said CO2 from the sorbent.
Claim 8
Dependent Claim
30 words
An apparatus as in claim 5 which includes means for passing a portion of said methane containing products gas to said CO2 separation means to remove CO2 from said sorbent.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |