US5029443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for the generation of steam and power for the start-up and/or auxiliary operation of a steam power station
Assignee: ABB AG
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Filing: 1990-08-29
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Granted: 1991-07-09
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Expires: 2010-08-29
Abstract
Abstract A method and device for generating steam and electric power for the start-up and/or auxiliary operation of a steam power station include at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator being fed by condensate from a main circuit of the steam power station. The exhaust or exit gas from the start-up gas turbine is fed to the start-up or auxiliary steam generator and heating of the start-up or auxiliary steam generator is effected by waste heat in the exhaust or exit gas stream from the start-up gas turbine.
Inventors
- 👤 Ulrich Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:24
CPC Classifications
F; F01; F01K; F01K13/00; F01K13/02; F01K23/00; F01K23/02; F01K23/06; F01K23/10; F01K23/103; Y; Y02; Y02E; Y02E20/00; Y02E20/14; Y02E20/16; Y02P; Y02P80/00; Y02P80/10; Y02P80/15
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
Method for generating steam and electric power for selectively operating a steam power station in start-up and auxiliary operation, wherein the steam power station has a main circuit carrying condensate, at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator receiving condensate from the main circuit, which method comprises feeding an exhaust gas stream from the start-up gas turbine to the start-up or auxiliary steam generator, and heating the start-up or auxiliary steam generator with waste heat in the exhaust gas stream.
Claim 2
Dependent Claim
96 words
Method for generating steam and electric power for selectively operating a steam power station in start-up and auxiliary operation, wherein the steam power station has a main circuit carrying condensate, at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator receiving condensate from the main circuit, which method comprises feeding an exhaust gas stream from the start-up gas turbine to the start-up or auxiliary steam generator, and heating the start-up or auxiliary steam generator with waste heat in the exhaust gas stream.
Claim 3
Dependent Claim
48 words
Method according to claim 1, which comprises superimposing a further heat source upon the exhaust gas stream being fed from the start-up gas turbine for additionally heating the start-up or auxiliary steam generator and generating an increased rate of saturated steam or a required rate of superheated steam.
Claim 4
Dependent Claim
45 words
Method according to claim 1, which comprises preheating the condensate to be vaporized in a preheating stage in the start-up or auxiliary steam generator before vaporizing the condensate, and heating the preheating stage with the exhaust gas stream being fed from the start-up gas turbine.
Claim 5
Dependent Claim
45 words
Method according to claim 2, which comprises preheating the condensate to be vaporized in a preheating stage in the start-up or auxiliary steam generator before vaporizing the condensate, and heating the preheating stage with the exhaust gas stream being fed from the start-up gas turbine.
Claim 6
Dependent Claim
60 words
Method according to claim 3, which comprises initially feeding the preheated condensate to a mixing header and from the mixing header to a saturated steam stage of the start-up or auxiliary steam generator for generating saturated steam, and feeding the saturated steam into the mixing header and from the mixing header into a superheating stage for conversion into superheated steam.
Claim 7
Dependent Claim
60 words
Method according to claim 4, which comprises initially feeding the preheated condensate to a mixing header and from the mixing header to a saturated steam stage of the start-up or auxiliary steam generator for generating saturated steam, and feeding the saturated steam into the mixing header and from the mixing header into a superheating stage for conversion into superheated steam.
Claim 8
Dependent Claim
85 words
Method for generating steam and electric power for selectively operating a steam power station in start-up and auxiliary operation, wherein the steam power station has at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator, which method comprises feeding an exhaust gas stream from the start-up gas turbine to the start-up or auxiliary steam generator, and heating the start-up or auxiliary steam generator with waste heat in the exhaust gas stream.
Claim 9
Dependent Claim
85 words
Method for generating steam and electric power for selectively operating a steam power station in start-up and auxiliary operation, wherein the steam power station has at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator, which method comprises feeding an exhaust gas stream from the start-up gas turbine to the start-up or auxiliary steam generator, and heating the start-up or auxiliary steam generator with waste heat in the exhaust gas stream.
Claim 10
Dependent Claim
85 words
Device for generating steam and electric power for the selective start-up and auxiliary operation of a steam power station, comprising a start-up or auxiliary steam generator; a generator for power generation; and a gas turbo set having a compressor, a combustion chamber and a gas turbine for driving said generator for power generation; said gas turbine having an exhaust side connected to said start-up or auxiliary steam generator for heating said start-up or auxiliary steam generator with exhaust gas heat of an exhaust gas stream.
Claim 11
Dependent Claim
85 words
Device for generating steam and electric power for the selective start-up and auxiliary operation of a steam power station, comprising a start-up or auxiliary steam generator; a generator for power generation; and a gas turbo set having a compressor, a combustion chamber and a gas turbine for driving said generator for power generation; said gas turbine having an exhaust side connected to said start-up or auxiliary steam generator for heating said start-up or auxiliary steam generator with exhaust gas heat of an exhaust gas stream.
Claim 12
Dependent Claim
30 words
Device according to claim 8, including a further heat source superimposed upon the heating of said start-up or auxiliary steam generator by the exhaust gas stream from said gas turbine.
Claim 13
Dependent Claim
14 words
Device according to claim 8, wherein said further heat source is a combustion chamber.
Claim 14
Dependent Claim
32 words
Device according to claim 9, including a connection between the exhaust side of said gas turbine and said start-up or auxiliary steam generator, said further heat source being inserted into said connection.
Claim 15
Dependent Claim
29 words
Device according to claim 8, wherein the steam power station has a main circuit carrying condensate, and said start-up or auxiliary steam generator receives condensate from the main circuit.
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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |