US4255926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for recovering energy from solid fossil fuels, more particularly bituminous coal high in inerts
Assignee: Steag GmbH
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Filing: 1978-07-18
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Granted: 1981-03-17
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Expires: 1998-07-18
Abstract
Abstract An installation for recovering energy from solid fossil fuels more particularly bituminous coal high in inerts consists of at least one unit in which the solid fuels are converted into gas. A gas-turbine and a steam-turbine are provided to recover the energy from the gases. The gases are freed of dust and desulfurized before the gas-turbine. The installation is characterized in that a wet-bottom boiler using the ground fuel is provided with pressure firing, the flue gases therefrom being passed to the desulfurizng unit and dust-removing unit before being utilized in the gas-turbine.
Inventors
- 👤 Klaus Heyn
- 👤 Hans J. Pogrzeba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:19
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/26; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/067; F23; F23J; F23J15/00; F23J15/006; Y; Y02; Y02E; Y02E20/00; Y02E20/16; Y02E20/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
An installation for recovering energy from solid fossil fuels, more particularly, fuels high in inerts, and paricularly bituminous coal, said installation comprising: at least one steam generating wet bottom boiler pressure fired with ground fuel for converting the solid fuel to combustible flue gas; gas turbine means operable by the flue gas for driving electrical generation means; steam turbine means operable by the steam from said boiler for driving electrical generation means; desulfurizing means interposed between said boiler and said gas turbine, said desulfurizing means having a heat exchanger means located therein for transferring heat between said flue gas and the steam from said boiler; and dust removing means interposed between said boiler and said gas turbine.
Claim 2
Dependent Claim
117 words
An installation for recovering energy from solid fossil fuels, more particularly, fuels high in inerts, and paricularly bituminous coal, said installation comprising: at least one steam generating wet bottom boiler pressure fired with ground fuel for converting the solid fuel to combustible flue gas; gas turbine means operable by the flue gas for driving electrical generation means; steam turbine means operable by the steam from said boiler for driving electrical generation means; desulfurizing means interposed between said boiler and said gas turbine, said desulfurizing means having a heat exchanger means located therein for transferring heat between said flue gas and the steam from said boiler; and dust removing means interposed between said boiler and said gas turbine.
Claim 3
Dependent Claim
18 words
An installation according to claim 1 wherein steam of said wet-bottom boiler is superheated in said heat exchanger.
Claim 4
Dependent Claim
24 words
An installation according to claim 1 wherein said desulfurizing means comprises means having nozzles for injecting a dry, dust-like desulfurizer into the flue gas.
Claim 5
Dependent Claim
20 words
An installation according to claim 1 wherein said dust removing means comprises a coarse separator followed by a fine separator.
Claim 6
Dependent Claim
17 words
An installation according to claim 1 wherein said dust removing means employs ceramic candle-filters for separating dust.
Claim 7
Dependent Claim
17 words
An installation according to claim 1 wherein said dust removing means utilizes separating nozzles for separating dust.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |