US3731485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open-cycle gas turbine plant
Assignee: GEA Group AG
•
Filing: 1971-02-01
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Granted: 1973-05-08
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Expires: 1991-02-01
Abstract
Abstract In a process of operating an open-cycle gas turbine plant supplied with gaseous fuels and combustion air, wherein the gas turbine is immediately supplied with the gases departing from the combustion chamber and the gaseous fuels and/or the combustion air are enriched with water vapor lowering the temperature of the gases departing from the combustion chamber, the improvement of sprinkling the flowing gaseous fuel and/or the combustion air immediately before entering the combustion chamber with circulating water which has been heated with waste heat thus saturating the fuel and/or combustion air with steam. The pressure of the circulating water is equal to the pressure of the fuel or of the combustion air and the temperature of the circulating water is lower than the boiling temperature under the pressure of the circulating water.
Inventors
- 👤 P Rudolph
- 👤 E Kapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:34
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/18; F01; F01K; F01K21/00; F01K21/04; F01K21/042; F01K23/00; F01K23/02; F01K23/06; F02C3/00; F02C3/20; F02C3/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
In a process of operating an open-cycle gas turbine plant including a combustion chamber to produce flue gases which are fed to the turbine, said combustion chamber being supplied with gaseous fuel and combustion air enriched with water, heat exchange means and water feeding means, the improvement which comprises: a. in a first stage, sprinkling said gaseous fuel with circulating water saturating and scrubbing said gaseous fuel with water vapor; and b. in a second stage, sprinkling said gaseous fuel from the first stage with circulating water which has been heated with waste heat thus heating the fuel and saturating it with steam immediately before entering the combustion chamber.
Claim 2
Dependent Claim
109 words
In a process of operating an open-cycle gas turbine plant including a combustion chamber to produce flue gases which are fed to the turbine, said combustion chamber being supplied with gaseous fuel and combustion air enriched with water, heat exchange means and water feeding means, the improvement which comprises: a. in a first stage, sprinkling said gaseous fuel with circulating water saturating and scrubbing said gaseous fuel with water vapor; and b. in a second stage, sprinkling said gaseous fuel from the first stage with circulating water which has been heated with waste heat thus heating the fuel and saturating it with steam immediately before entering the combustion chamber.
Claim 3
Dependent Claim
33 words
Process of claim 1 wherein water for said first stage is withdrawn from the circulating water of said second stage and the circulating water of the second stage is provided with make-up water.
Claim 4
Dependent Claim
27 words
Process of claim 1 wherein after the first stage the fuel is cooled and the resulting condensate is fed into the circulating water of the first stage.
Claim 5
Dependent Claim
26 words
Process of claim 1 wherein the waste heat of exhaust gas behind the gas turbine is utilized to heat the sprinkling water for the second stage.
Claim 6
Dependent Claim
32 words
Process of claim 1 wherein said gaseous fuel is produced by gasification under pressure and the waste heat from the gasification process is utilized as the waste heat in said second stage.
Claim 7
Dependent Claim
25 words
Process of claim 1 wherein said sprinkling is carried out with water containing soluble organic constituents or a mixture of water and oil or tar.
Claim 8
Dependent Claim
20 words
Process of claim 1 wherein said open cycle gas turbine plant is operated in combination with a steam turbine plant.
Claim 9
Dependent Claim
12 words
Process of claim 1 wherein an expansion turbine precedes said combustion chamber.
Claim 10
Dependent Claim
22 words
Process of claim 1 wherein the turbine exhaust gases are cooled below their dew point by the water used for said sprinkling.
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |