Patent US6266953B1 successfully refreshed from Google Patents.
US6266953B1
Expired / Lapsed
US
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Method of operating a gas and steam turbine plant
Assignee: Siemens AG
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Filing: 2000-09-05
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Granted: 2001-07-31
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Expires: 2020-09-05
Abstract
Abstract A method of operating a gas and steam turbine plant includes operating a gas turbine with a fuel to produce an expanded working medium and generating steam for a steam turbine from heat contained in the expanded working medium leaving the gas turbine. A reducing agent and a supply of an adjustable quantity of carrier air are introduced into the working medium with a metering system, for catalytically cleaning the working medium. The quantity of carrier air is adjusted as a function of the type of fuel supplied to the gas turbine. The quantity of carrier air is controlled only with a first air compressor for gas fuel operation of the gas turbine and additionally with a second air compressor, connected in parallel with the first air compressor, for oil fuel operation of the gas turbine. A gas and steam turbine plant is also provided.
Inventors
- 👤 Asbjoern Ramstetter
- 👤 Ralf Sigling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/18; F01; F01D; F01D25/00; F01D25/30; F01D25/305; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/1807; F22B1/1815; F22B37/00; F22B37/008; Y; Y02; Y02E; Y02E20/00; Y02E20/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
A method of operating a gas and steam turbine plant, which comprises: providing a gas turbine and a steam turbine; operating the gas turbine with a fuel to produce an expanded working medium; generating steam for the steam turbine from heat contained in the expanded working medium leaving the gas turbine; introducing a reducing agent and a supply of an adjustable quantity of carrier air into the working medium with a metering system, for catalytically cleaning the working medium; adjusting the quantity of carrier air as a function of a type of the fuel supplied to the gas turbine; controlling the quantity of carrier air with only a first air compressor for gas fuel operation of the gas turbine; and controlling the quantity of carrier air additionally with a second air compressor, connected in parallel with the first air compressor, for oil fuel operation of the gas turbine.
Claim 2
Independent Claim
148 words
A method of operating a gas and steam turbine plant, which comprises: providing a gas turbine and a steam turbine; operating the gas turbine with a fuel to produce an expanded working medium; generating steam for the steam turbine from heat contained in the expanded working medium leaving the gas turbine; introducing a reducing agent and a supply of an adjustable quantity of carrier air into the working medium with a metering system, for catalytically cleaning the working medium; adjusting the quantity of carrier air as a function of a type of the fuel supplied to the gas turbine; controlling the quantity of carrier air with only a first air compressor for gas fuel operation of the gas turbine; and controlling the quantity of carrier air additionally with a second air compressor, connected in parallel with the first air compressor, for oil fuel operation of the gas turbine.
Claim 3
Dependent Claim
99 words
A gas and steam turbine plant, comprising: a gas turbine to be selectively operated both with gas and with oil as a fuel for producing an expanded working medium; a waste-heat steam generator disposed downstream of said gas turbine; a catalytic converter disposed in said steam generator for catalytically cleaning the expanded working medium from said gas turbine; and a metering system having first and second air compressors for introducing a reducing agent into the working medium, said second air compressor connected in parallel with said first air compressor at least during oil fuel operation of said gas turbine.
Claim 4
Dependent Claim
99 words
A gas and steam turbine plant, comprising: a gas turbine to be selectively operated both with gas and with oil as a fuel for producing an expanded working medium; a waste-heat steam generator disposed downstream of said gas turbine; a catalytic converter disposed in said steam generator for catalytically cleaning the expanded working medium from said gas turbine; and a metering system having first and second air compressors for introducing a reducing agent into the working medium, said second air compressor connected in parallel with said first air compressor at least during oil fuel operation of said gas turbine.
References Cited (Backward Citations)
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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) | 2004-07-30 | 2005-01-29 | 2005-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-30 | 2009-01-29 | 2009-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-30 | 2013-01-29 | 2013-07-31 | $7700.00 | Window Closed / Lapsed |