US5937632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for operating a gas turbine group with catalytic gas generator
Assignee: Alstom SA
•
Filing: 1997-12-03
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Granted: 1999-08-17
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Expires: 2017-12-03
Abstract
Abstract In the case of a method for operating a gas turbine group, the gas turbine group essentially consists of a compressor (1), a combustion chamber (5), a turbine (2) and a generator (3). Fuel is mixed in a premixer (18) of the combustion chamber (5), prior to the combustion, with air compressed in the compressor (1), and subsequently burned in a combustion space (19). Compressed air, fed via an air line element (15) , is mixed with fuel fed via a fuel line element (16) and delivered to a reactor (10) having a catalytic coating. The air/fuel mixture is converted in the reactor (10) into a synthesis gas comprising hydrogen, carbon monoxide, residual air and residual fuel and this synthesis gas is injected into the zones of the combustion chamber (5) where the flame is stabilized.
Inventors
- 👤 Klaus Dobbeling
- 👤 Timothy Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:17
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/40; F02; F02C; F02C3/00; F02C3/20; F02C3/30; F02C6/00; F02C7/00; F02C7/22; F02C7/224; F23C; F23C2900/00; F23C2900/9901
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A method for operating a gas turbine group, the gas turbine group essentially consisting of a compressor (1), a combustion chamber (5), a turbine (2) and a generator (3), fuel being mixed in a premixer (18) of the combustion chamber (5), prior to the combustion, with air compressed in the compressor (1), and subsequently being burned in a combustion space (19), wherein compressed air, fed via an air line element (15), is mixed with fuel fed via a fuel line element (16) and delivered to a reactor (10) having a catalytic coating, the air/fuel mixture is converted in the reactor (10) into a synthesis gas comprising hydrogen, carbon monoxide, residual air and residual fuel and this synthesis gas is injected into the zones of the combustion chamber (5) where the flame is stabilized.
Claim 2
Independent Claim
133 words
A method for operating a gas turbine group, the gas turbine group essentially consisting of a compressor (1), a combustion chamber (5), a turbine (2) and a generator (3), fuel being mixed in a premixer (18) of the combustion chamber (5), prior to the combustion, with air compressed in the compressor (1), and subsequently being burned in a combustion space (19), wherein compressed air, fed via an air line element (15), is mixed with fuel fed via a fuel line element (16) and delivered to a reactor (10) having a catalytic coating, the air/fuel mixture is converted in the reactor (10) into a synthesis gas comprising hydrogen, carbon monoxide, residual air and residual fuel and this synthesis gas is injected into the zones of the combustion chamber (5) where the flame is stabilized.
Claim 3
Dependent Claim
22 words
The method as claimed in claim 1, wherein the fuel fed via a fuel line element (16) is natural gas and/or methane.
Claim 4
Dependent Claim
56 words
The method as claimed in claim 1, wherein the air line element (15) branches off from an air line (21) which delivers the compressed air from the compressor (1) to the combustion chamber (5) and/or the fuel line element (16) branches off from a fuel line (6) which feeds the fuel to the combustion chamber (5).
Claim 5
Dependent Claim
29 words
The method as claimed in claim 1, wherein the fuel fed to the reactor (10) is preheated in a heat exchanger (11) before being mixed with the compressed air.
Claim 6
Dependent Claim
26 words
The method as claimed in claim 4, wherein the heat energy of the synthesis gas is used to heat the fuel in the heat exchanger (11).
Claim 7
Dependent Claim
33 words
The method as claimed in claim 1, wherein, when the synthesis gas production is started, the compressed air is heated prior to being delivered to the reactor (10) and/or the catalyst is heated.
Claim 8
Dependent Claim
15 words
The method as claimed in claim 6, wherein the catalyst is heated electrically and/or chemically.
Claim 9
Dependent Claim
29 words
The method as claimed in claim 1, wherein the compressed air fed to the reactor (10) via the air line element (15) is compressed using an auxiliary compressor (7).
Claim 10
Dependent Claim
23 words
The method as claimed in claim 1, wherein the synthesis gas is injected into the combustion space (19) of the combustion chamber (5).
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 2002-08-16 | 2003-02-15 | 2003-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-16 | 2007-02-15 | 2007-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-16 | 2011-02-15 | 2011-08-17 | $7700.00 | Window Closed / Lapsed |