CN1920276B - 燃气轮机的废气导向器以及混合该燃气轮机的废气的方法 - Google Patents
燃气轮机的废气导向器以及混合该燃气轮机的废气的方法 Download PDFInfo
- Publication number
- CN1920276B CN1920276B CN200610138985XA CN200610138985A CN1920276B CN 1920276 B CN1920276 B CN 1920276B CN 200610138985X A CN200610138985X A CN 200610138985XA CN 200610138985 A CN200610138985 A CN 200610138985A CN 1920276 B CN1920276 B CN 1920276B
- Authority
- CN
- China
- Prior art keywords
- waste gas
- flow
- vortex device
- flow channel
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
- F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C15/00—Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/10—Stators
- F05B2240/12—Fluid guiding means, e.g. vanes
- F05B2240/122—Vortex generators, turbulators, or the like, for mixing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/21—Burners specially adapted for a particular use
- F23D2900/21003—Burners specially adapted for a particular use for heating or re-burning air or gas in a duct
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03341—Sequential combustion chambers or burners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims (16)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05018270.8 | 2005-08-23 | ||
EP05018270.8A EP1757778B1 (de) | 2005-08-23 | 2005-08-23 | Abgasführung einer Gasturbine sowie Verfahren zum Vermischen des Abgases der Gasturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1920276A CN1920276A (zh) | 2007-02-28 |
CN1920276B true CN1920276B (zh) | 2011-06-15 |
Family
ID=35976425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200610138985XA Active CN1920276B (zh) | 2005-08-23 | 2006-08-23 | 燃气轮机的废气导向器以及混合该燃气轮机的废气的方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7784262B2 (zh) |
EP (1) | EP1757778B1 (zh) |
CN (1) | CN1920276B (zh) |
CA (1) | CA2556596C (zh) |
Families Citing this family (72)
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US20100146982A1 (en) * | 2007-12-06 | 2010-06-17 | Air Products And Chemicals, Inc. | Blast furnace iron production with integrated power generation |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844001A (en) * | 1953-01-06 | 1958-07-22 | Gen Electric | Flow straightening vanes for diffuser passages |
US4817378A (en) * | 1987-02-13 | 1989-04-04 | General Electric Company | Gas turbine engine with augmentor and variable area bypass injector |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5308810A (en) * | 1992-12-28 | 1994-05-03 | Atlantic Richfield Company | Method for treating contaminated catalyst |
DE4325977A1 (de) | 1993-08-03 | 1995-02-09 | Balcke Duerr Ag | Diffusor |
JP3070401B2 (ja) * | 1994-08-23 | 2000-07-31 | 株式会社日立製作所 | ガスタービン排気構造 |
US5461853A (en) | 1994-11-30 | 1995-10-31 | The Babcock & Wilcox Company | HRSG boiler design with air staging and gas reburn |
DE19542521A1 (de) * | 1995-11-15 | 1997-05-22 | Ruhrgas Ag | Verfahren und Brenner zum Verbrennen eines Luft/Brennstoff-Gemisches |
US5946901A (en) * | 1997-12-17 | 1999-09-07 | Combustion Engineering, Inc. | Method and apparatus for improving gas flow in heat recovery steam generators |
US6442924B1 (en) * | 2000-06-13 | 2002-09-03 | General Electric Company | Optimized steam turbine peaking cycles utilizing steam bypass and related process |
EP1262637A1 (de) * | 2001-05-31 | 2002-12-04 | ALSTOM (Switzerland) Ltd | Verfahren zum Betrieben eines Gasturbinenkraftwerks sowie Gasturbinenkraftwerk |
-
2005
- 2005-08-23 EP EP05018270.8A patent/EP1757778B1/de not_active Not-in-force
-
2006
- 2006-08-22 CA CA2556596A patent/CA2556596C/en active Active
- 2006-08-23 CN CN200610138985XA patent/CN1920276B/zh active Active
- 2006-08-23 US US11/508,167 patent/US7784262B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844001A (en) * | 1953-01-06 | 1958-07-22 | Gen Electric | Flow straightening vanes for diffuser passages |
US4817378A (en) * | 1987-02-13 | 1989-04-04 | General Electric Company | Gas turbine engine with augmentor and variable area bypass injector |
Also Published As
Publication number | Publication date |
---|---|
EP1757778B1 (de) | 2015-12-23 |
US7784262B2 (en) | 2010-08-31 |
CA2556596C (en) | 2014-05-06 |
CN1920276A (zh) | 2007-02-28 |
EP1757778A1 (de) | 2007-02-28 |
US20070044475A1 (en) | 2007-03-01 |
CA2556596A1 (en) | 2007-02-23 |
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