US4092129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing methane rich gas
Assignee: Electricite de France SA
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Filing: 1976-08-23
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Granted: 1978-05-30
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Expires: 1996-08-23
Abstract
Abstract Production of gas rich in methane employing an electrolytic cell whereby oxygen is produced at the anode and hydrogen is produced at the cathode thereof. The cell includes a post-anodic compartment containing coal and/or lignite for reacting with the oxygen to produce CO. The CO in turn is reacted with the hydrogen from the cathode to produce the gas rich in methane.
Inventors
- 👤 Philippe Goudal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:27
CPC Classifications
G; G21; G21D; G21D9/00; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0485; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C25B1/04; C25B1/23; C25B3/00; C25B3/01; C25B3/03; C25B3/20; C10; C10J; C10J2300/00; C10J2300/16; C10J2300/164; C10J2300/1656; C10J2300/1662; C10J2300/1684; Y; Y02; Y02E; Y02E30/00; Y02E60/00; Y02E60/30; Y02E60/36; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A process for the production of gas rich in methane, the process comprising the steps of providing an electrolytic cell having an anode and a cathode and containing an aqueous electrolytic solution, electrolyzing said aqueous electrolytic solution to produce oxygen at said anode and hydrogen at said cathode, reacting a carbonaceous fuel selected from the group consisting of coal and lignite at said anode with said oxygen to give carbon monoxide, and reacting said carbon monoxide with said hydrogen according to the reaction CO + 3H 2 → CH 4 + H 2 O.
Claim 2
Dependent Claim
94 words
A process for the production of gas rich in methane, the process comprising the steps of providing an electrolytic cell having an anode and a cathode and containing an aqueous electrolytic solution, electrolyzing said aqueous electrolytic solution to produce oxygen at said anode and hydrogen at said cathode, reacting a carbonaceous fuel selected from the group consisting of coal and lignite at said anode with said oxygen to give carbon monoxide, and reacting said carbon monoxide with said hydrogen according to the reaction CO + 3H 2 → CH 4 + H 2 O.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said reacting of said carbon monoxide with said hydrogen occurs at said cathode.
Claim 4
Dependent Claim
36 words
The process of claim 1 wherein said reacting a carbonaceous fuel selected from the group consisting of coal and lignite at said anode with said oxygen is conducted in a fluidized bed of said carbonaceous fuel.
Claim 5
Dependent Claim
35 words
The process of claim 1 wherein said reacting of a carbonaceous fuel is carried out at a temperature of about 400° C in the presence of a catalyst for the principle production of carbon monoxide.
Claim 6
Dependent Claim
14 words
The process of claim 4 wherein said catalyst is carbon tetrachloride or carbon oxychloride.
Claim 7
Dependent Claim
105 words
A process for the production of gas rich in methane, the process comprising the steps of providing an electrolytic cell having an anode and a cathode and containing an aqueous electrolytic solution, electrolyzing said aqueous electrolytic solution to produce oxygen at said anode and hydrogen at said cathode, reacting carbonaceous fuel selected from the group consisting of coal and lignite at said anode with said oxygen to give carbon dioxide, reacting said carbon dioxide with a carbonaceous fuel to give carbon monoxide, and reacting said carbon monoxide with said hydrogen according to the reaction CO + 3H 2 → CH 4 + H 2 O.
Claim 8
Dependent Claim
105 words
A process for the production of gas rich in methane, the process comprising the steps of providing an electrolytic cell having an anode and a cathode and containing an aqueous electrolytic solution, electrolyzing said aqueous electrolytic solution to produce oxygen at said anode and hydrogen at said cathode, reacting carbonaceous fuel selected from the group consisting of coal and lignite at said anode with said oxygen to give carbon dioxide, reacting said carbon dioxide with a carbonaceous fuel to give carbon monoxide, and reacting said carbon monoxide with said hydrogen according to the reaction CO + 3H 2 → CH 4 + H 2 O.
References Cited (Backward Citations)
US1865053A
Cited
US2804146A
Cited
US3325253A
Cited
US3556749A
Cited
US3619365A
Cited
US3577329A
Cited
US3852180A
Cited
DE2503367A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |