US3675426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for operating a steam gas plant including a gas turbine, a steam turbine with its steam generator at the downstream end
Assignee: Stein Industrie SA
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Filing: 1970-05-13
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Granted: 1972-07-11
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Expires: 1990-05-13
Abstract
Abstract Method and means for operating a steam gas plant including a gas turbine, and a steam turbine with its steam generator at the downstream end. The method and means for improving the operation of a steam gas plant comprising a gas turbine the exhaust gases of which sustain the combustion of the burners of a steam generator, which latter feeds steam into a steam turbine. A fraction of the exhaust gases is diverted through an adjusting damper into the steam generator at a point where the temperature of the flue gases approximates that of said exhaust gases. Said point may lie beyond a reheater inserted for instance between two stages of the steam turbine and ahead of a heat exchanger.
Inventors
- 👤 Jean Vidal
- 👤 Jean Parisot
- 👤 Jacques Lemoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
F; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/10; F01K23/103
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
In a method for operating a steam gas plant comprising a gas turbine, a steam generator, burners fed by the exhaust gases of said gas turbine for heating said generator, at least one heat exchanger in said generator and a steam turbine fed by said steam generator, the step comprising dividing said exhaust gases of said gas turbine into two fractions and feeding said fractions respectively into said burners and into the output of said steam generator at a point ahead of one said heat exchanger where the temperature of the flue gases of said generator approximates that of said exhaust gases.
Claim 2
Dependent Claim
102 words
In a method for operating a steam gas plant comprising a gas turbine, a steam generator, burners fed by the exhaust gases of said gas turbine for heating said generator, at least one heat exchanger in said generator and a steam turbine fed by said steam generator, the step comprising dividing said exhaust gases of said gas turbine into two fractions and feeding said fractions respectively into said burners and into the output of said steam generator at a point ahead of one said heat exchanger where the temperature of the flue gases of said generator approximates that of said exhaust gases.
Claim 3
Dependent Claim
56 words
A method as claimed in claim 1 adapted for operating a steam gas plant including a reheater and heat exchangers incorporated with the steam generator, wherein the fraction of exhaust gases fed into the output of the steam generator reaches the latter at a point beyond the reheater and ahead of at least one heat exchanger.
Claim 4
Dependent Claim
18 words
A method as claimed in claim 1 according to which the ratio between the two fractions is controlled.
Claim 5
Dependent Claim
85 words
In a steam gas plant consisting of a gas turbine, a steam generator, burners within said steam generator connected to the exhaust of said gas turbine, a steam turbine connected to said steam generator, heat exchangers and a superheater incorporated within said steam generator, the improvement comprising means for diverting a fraction of the exhaust gases from the exhaust of said gas turbine and remixing same in the output end of said steam generator after said super-heater and ahead of at least one heat exchanger.
Claim 6
Dependent Claim
85 words
In a steam gas plant consisting of a gas turbine, a steam generator, burners within said steam generator connected to the exhaust of said gas turbine, a steam turbine connected to said steam generator, heat exchangers and a superheater incorporated within said steam generator, the improvement comprising means for diverting a fraction of the exhaust gases from the exhaust of said gas turbine and remixing same in the output end of said steam generator after said super-heater and ahead of at least one heat exchanger.
Claim 7
Dependent Claim
42 words
A steam gas plant as claimed in claim 4 comprising further a reheater for the steam carried inside the steam generator , said reheater located at a point ahead of the point at which said fraction of the exhaust gases is diverted.
Claim 8
Dependent Claim
24 words
A steam gas plant as claimed in claim 4 comprising a damper adapted to adjust the throughput of the diverted fraction of exhaust gases.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |