US3958625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport of heat as chemical energy
Assignee: General Electric Co
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Filing: 1974-07-01
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Granted: 1976-05-25
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Expires: 1994-07-01
Abstract
Abstract At a heat source, such as a nuclear reactor, methane and carbon dioxide are reacted (at about 800°-900°C) to form a mixture of carbon monoxide and hydrogen. This mixture of gases is cooled by heat exchange with incoming cold CH 4 and CO 2 and is then pumped through a first pipeline at ambient temperature to an energy use area. At the energy use end of the first pipeline the gas mixture is heated (to about 350°-500°C) in the presence of steam and a catalyst. The CO and H 2 react exothermically to form CH 4 and CO 2 . The heat evolved from this reaction is released across a heat exchanger for use as process heat or for conversion to electricity. Water is condensed and separated from the mixture of gaseous reactants and the dried, cooled CH 4 /CO 2 mixture is returned to the heat source end via a second pipeline for repetition of the closed loop process described.
Inventors
- 👤 Robert H. Wentorf, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:25
CPC Classifications
G; G21; G21D; G21D9/00; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; F; F24; F24V; F24V30/00; Y; Y02; Y02E; Y02E30/00; Y10; Y10S; Y10S165/00; Y10S165/911
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
208 words
The process for transporting energy from a source of heat to an energy use area comprising the steps of: a. reacting a first gas mixture consisting principally of methane and carbon dioxide adjacent said heat source at a temperature in excess of about 650°C to produce a second gas mixture consisting principally of carbon monoxide and hydrogen, b. cooling said second gas mixture to a temperature below about 40°C, c. pressurizing and transporting said second gas mixture through a first conduit to said energy use area, d. heating said second gas mixture, e. reacting said second gas mixture in the presence of steam and a catalyst at a temperature of at least about 350°C and a pressure of at least about 10 atmospheres to release heat and yield principally methane and carbon dioxide, f. cooling the resulting mixture containing methane, carbon dioxide and water vapor below the condensation temperature for steam, g. separating water and by-products formed in step (e) from the mixture containing methane, carbon dioxide and water vapor to produce said first gas mixture, h. conducting the dried first gas mixture through a second conduit to said heat source, i. heating said dried first gas mixture and j. repeating the series of steps set forth above.
Claim 2
Dependent Claim
208 words
The process for transporting energy from a source of heat to an energy use area comprising the steps of: a. reacting a first gas mixture consisting principally of methane and carbon dioxide adjacent said heat source at a temperature in excess of about 650°C to produce a second gas mixture consisting principally of carbon monoxide and hydrogen, b. cooling said second gas mixture to a temperature below about 40°C, c. pressurizing and transporting said second gas mixture through a first conduit to said energy use area, d. heating said second gas mixture, e. reacting said second gas mixture in the presence of steam and a catalyst at a temperature of at least about 350°C and a pressure of at least about 10 atmospheres to release heat and yield principally methane and carbon dioxide, f. cooling the resulting mixture containing methane, carbon dioxide and water vapor below the condensation temperature for steam, g. separating water and by-products formed in step (e) from the mixture containing methane, carbon dioxide and water vapor to produce said first gas mixture, h. conducting the dried first gas mixture through a second conduit to said heat source, i. heating said dried first gas mixture and j. repeating the series of steps set forth above.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein heat released in step (b) is used in step (i) via heat exchange means.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the first gas mixture is heated to about 925°C.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the second gas mixture is reacted at a pressure in the 45-100 atmosphere range.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein heat released in step (f) is used in step (d) via heat exchange means.
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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |