US6098398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature hydrogen combustion turbine
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1998-02-27
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Granted: 2000-08-08
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Expires: 2018-02-27
Abstract
Abstract In a hydrogen combustion turbine plant employing a topping bleed cycle, a low temperature hydrogen combustion turbine bleeds part of exhaust from a third turbine to cool a first turbine, thereby achieving a high efficiency in a desired temperature range while curtailing a cost increase without involving the addition of accessory instruments.
Inventors
- 👤 Kazuo Uematsu
- 👤 Hidetaka Mori
- 👤 Hideaki Sugishita
- 👤 Herbert Jericha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/22; F01; F01K; F01K25/00; F01K25/005; F02C1/00; F02C1/007; F02C1/04; F02C3/34; F02C6/00; F02C6/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
A hydrogen combustion turbine plant, comprising: a compressor adapted to compress a gas to generate a compressed gas; a combustor adapted to mix the compressed gases with O 2 and H 2 gasses fed to the combustor, and burning and heating the mixture to form a high temperature combustion gas; a first turbine driven by the combustion gas; a channel adapted to supply a first exhaust gas from said first turbine to said compressor; a second turbine driven by the first exhaust gas partly bled from said channel; a third turbine driven by steam, said steam being provided by condensing a second exhaust gas from said second turbine and subsequently evaporating the condensate in at least one heat exchanger provided in said channel; and a cooling unit adapted to provide at least a part of a third exhaust gas from said third turbine to said first turbine to cool said first turbine.
Claim 2
Dependent Claim
152 words
A hydrogen combustion turbine plant, comprising: a compressor adapted to compress a gas to generate a compressed gas; a combustor adapted to mix the compressed gases with O 2 and H 2 gasses fed to the combustor, and burning and heating the mixture to form a high temperature combustion gas; a first turbine driven by the combustion gas; a channel adapted to supply a first exhaust gas from said first turbine to said compressor; a second turbine driven by the first exhaust gas partly bled from said channel; a third turbine driven by steam, said steam being provided by condensing a second exhaust gas from said second turbine and subsequently evaporating the condensate in at least one heat exchanger provided in said channel; and a cooling unit adapted to provide at least a part of a third exhaust gas from said third turbine to said first turbine to cool said first turbine.
Claim 3
Dependent Claim
24 words
A hydrogen combustion turbine plant of claim 1, wherein the hydrogen combustion turbine plant is operated at a temperature of 1600° C. or lower.
Claim 4
Dependent Claim
33 words
A hydrogen combustion turbine plant of claim 1, wherein said cooling unit is a branch path that provides said first turbine with said part of the third exhaust gas from said third turbine.
Claim 5
Dependent Claim
26 words
A hydrogen combustion turbine plant of claim 3, wherein said branch path directly provides said third exhaust from said third turbine directly to said first turbine.
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) | 2003-08-08 | 2004-02-07 | 2004-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-08 | 2008-02-07 | 2008-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-08 | 2012-02-07 | 2012-08-08 | $7700.00 | Window Closed / Lapsed |