EP0863364A2 - Abhitzekessel mit einem divergierenden Kanal - Google Patents

Abhitzekessel mit einem divergierenden Kanal Download PDF

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Publication number
EP0863364A2
EP0863364A2 EP98200705A EP98200705A EP0863364A2 EP 0863364 A2 EP0863364 A2 EP 0863364A2 EP 98200705 A EP98200705 A EP 98200705A EP 98200705 A EP98200705 A EP 98200705A EP 0863364 A2 EP0863364 A2 EP 0863364A2
Authority
EP
European Patent Office
Prior art keywords
heat
recovery boiler
profiles
divergent duct
conveyance
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.)
Withdrawn
Application number
EP98200705A
Other languages
English (en)
French (fr)
Other versions
EP0863364A3 (de
Inventor
Piero De Martino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Combustion Engineering SpA
Original Assignee
ABB Combustion Engineering SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Combustion Engineering SpA filed Critical ABB Combustion Engineering SpA
Publication of EP0863364A2 publication Critical patent/EP0863364A2/de
Publication of EP0863364A3 publication Critical patent/EP0863364A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/32—Arrangement of components according to their shape
    • F05D2250/324—Arrangement of components according to their shape divergent

Definitions

  • the present invention relates to a heat-recovery boiler provided with a divergent duct between the outlet of a turbine and the inlet of a boiler.
  • Boilers of the above type utilize the heat of the exhaust gases from the gas turbine, which are conveyed to the heat-recovery boiler by means of a so-called divergent duct.
  • a so-called divergent duct which may be 15 to 20 m long, is provided between the outlet duct of the gas turbine, having a diameter of approximately 5 to 6 meters, and the heat-recovery boiler.
  • this aim is achieved in that the covering wall of the divergent duct that runs from the top of the boiler to the top of the outlet of the gas turbine has an inclination which forms an angle ( ⁇ ) greater than 45° and up to 75° with respect to the horizontal plane, and that the inclined wall of the divergent duct is connected to the top of the outlet of the gas turbine through a wall which is shaped like an arc.
  • aerodynamic profiles for conveying the gas stream are provided which are arranged in succession and in adjacent rows.
  • the angle ( ⁇ ) assumes a value between 62° and 65°.
  • burners which can be orientated and adapted with respect to the direction of flow of the hot gas stream inside the divergent duct and downstream of the aerodynamic profiles that are optionally present.
  • the aerodynamic conveyance profiles have an arc-like configuration on their leading edge, and the part of the metal plates directed towards the inlet of the heat-recovery boiler is formed by converging conduction plates which cover an angle ( ⁇ ) of approximately 20°.
  • the bottom wall of the divergent duct is inclined with respect to the horizontal plane.
  • the metal plates of the aerodynamic profile have a concave/convex shape in order to efficiently open out the stream of hot gases directed towards the boiler.
  • the outlet of a gas turbine is connected to the inlet 2 of a heat-recovery boiler, by using for this purpose a divergent duct, generally designated by the reference numeral 3.
  • the divergent duct 3 is advantageously provided by means of a frame-like structure.
  • the hot gases are fed from the outlet 1 of the turbine in the direction indicated by the arrow 102 in order to enter the heat-recovery boiler 2 in the direction indicated by the arrow 110.
  • the bottom wall 6 is inclined with respect to the horizontal plane by an angle ( ⁇ ) of approximately 15° in order to join with the inlet of the heat-recovery boiler.
  • the covering wall 7 has an angle ( ⁇ ) which is greater than 45° and up to 75°, preferably approximately 62-65° with respect to the horizontal plane 100.
  • a portion 8 made of metal plate and having an arc-like shape is provided between the outlet 1 and the inclined covering wall 7.
  • the radius of curvature R of the arc-shaped wall 8 corresponds to a value of 0.5-0.8 times the vertical dimension of the inlet of the divergent duct.
  • the internal internal space 9 of the divergent duct 3 accommodates, proximate to the region formed by the arc-shaped plate 8, a plurality of aerodynamic conveyance profiles designated by the reference numeral 10.
  • the aerodynamic conveyance profiles 10 that run through the internal space 9 are arranged along arc-shaped segments having the same center 101 as the radius of curvature that forms the profile of the arc-shaped plate 8.
  • the aerodynamic profiles 10 are arranged in groups and sequentially along arc-like paths 103, 104, 105 and 106 whose radii increase from the center 101 in order to uniformly diffuse the stream of hot gases in the divergent duct.
  • the aerodynamic conveyance profiles 10, which run lengthwise along the internal space 9, are supported by the walls 4 and 5 so as to allow an angular adjustment, allowing to adapt the angle of attack of the profile with respect to the stream, so as to achieve the different degrees of deflection of the hot fumes in the entire divergent duct.
  • reheaters 20, 21, 22 and 23 Downstream of the aerodynamic profiles 10, inside the internal space 9, reheaters 20, 21, 22 and 23 are provided and, according to the invention, these burners can be adjusted angularly in an operating position, so that their flame is aligned with the lines of flow of the hot gas stream, as defined by the conveyance profiles 10.
  • the burner 20 is arranged so that its centerline axis is at approximately 57° with respect to the horizontal plane, while the axis of the burner 21 is arranged at 45° with respect to the horizontal plane and the axis of the burner 22 is arranged at 31° with respect to the horizontal plane.
  • the conveyance profiles 10 are composed of a tube 30 having a circular cross-section, the rounded part 31 whereof is directed towards the incoming gas stream, designated by the reference numeral 102.
  • the remaining part of the tube 30 is covered by two conduction plates 32 and 33, the free ends whereof are joined at the point 34.
  • the plates 32 and 33 are sized so as to cover an angle ( ⁇ ) of approximately 20°.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Paper (AREA)
  • Incineration Of Waste (AREA)
EP98200705A 1997-03-07 1998-03-06 Abhitzekessel mit einem divergierenden Kanal Withdrawn EP0863364A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI970509 1997-03-07
ITMI970509 IT1290579B1 (it) 1997-03-07 1997-03-07 Caldaia a recupero, munita di condotto divergente.

Publications (2)

Publication Number Publication Date
EP0863364A2 true EP0863364A2 (de) 1998-09-09
EP0863364A3 EP0863364A3 (de) 1999-07-28

Family

ID=11376329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200705A Withdrawn EP0863364A3 (de) 1997-03-07 1998-03-06 Abhitzekessel mit einem divergierenden Kanal

Country Status (2)

Country Link
EP (1) EP0863364A3 (de)
IT (1) IT1290579B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2224101A1 (de) * 2009-02-27 2010-09-01 Siemens Aktiengesellschaft Gasturbine
EP2325559A1 (de) 2009-11-19 2011-05-25 NEM Power-Systems, Niederlassung Deutschland der NEM B.V. Niederlande Anordnung zur Beeinflussung einer Abgasströmung
WO2011028356A3 (en) * 2009-09-03 2011-07-21 Alstom Technology Ltd. Apparatus and method for close coupling of heat recovery steam generators with gas turbines
US20120174586A1 (en) * 2011-01-07 2012-07-12 Braden Manufacturing, Llc Duct with transition section for turbine exhaust
US9291177B2 (en) 2010-06-01 2016-03-22 Esg Mbh Duct having flow conducting surfaces
WO2016209365A1 (en) * 2015-06-22 2016-12-29 Saudi Arabian Oil Company Flow distribution device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110560A (en) * 1987-11-23 1992-05-05 United Technologies Corporation Convoluted diffuser
US5431009A (en) * 1993-12-21 1995-07-11 Combustion Engineering, Inc. Heat recovery steam generator inlet duct
US5555718A (en) * 1994-11-10 1996-09-17 Combustion Engineering, Inc. Method and apparatus for injecting reactant for catalytic reduction in a gas turbine combined cycle system
US5642614A (en) * 1993-12-30 1997-07-01 Combustion Engineering, Inc. Gas turbine combined cycle system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110560A (en) * 1987-11-23 1992-05-05 United Technologies Corporation Convoluted diffuser
US5431009A (en) * 1993-12-21 1995-07-11 Combustion Engineering, Inc. Heat recovery steam generator inlet duct
US5642614A (en) * 1993-12-30 1997-07-01 Combustion Engineering, Inc. Gas turbine combined cycle system
US5555718A (en) * 1994-11-10 1996-09-17 Combustion Engineering, Inc. Method and apparatus for injecting reactant for catalytic reduction in a gas turbine combined cycle system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BAUVER W P ET AL: "Gas turbine heat recovery steam generator system performance improvement through gas flow optimization" 6TH INTERNATIONAL CONFERENCE ON GAS TURBINES IN COGENERATION AND UTILITY INDUSTRIAL AND INDEPENDENT POWER GENERATION - 1992 ASME COGEN-TURBO;HOUSTON, TX, USA SEP 1-3 1992, vol. 7, 1992, pages 303-310, XP002103649 ASME Int Gas Turbine Inst Publ IGTI;American Society of Mechanical Engineers, International Gas Turbine Institute (Publication) IGTI 1992 Publ by ASME, New York, NY, USA *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2224101A1 (de) * 2009-02-27 2010-09-01 Siemens Aktiengesellschaft Gasturbine
WO2011028356A3 (en) * 2009-09-03 2011-07-21 Alstom Technology Ltd. Apparatus and method for close coupling of heat recovery steam generators with gas turbines
RU2620309C2 (ru) * 2009-09-03 2017-05-24 Дженерал Электрик Текнолоджи Гмбх Устройство и способ для близкого соединения теплоутилизационных парогенераторов с газовыми турбинами
US10001272B2 (en) 2009-09-03 2018-06-19 General Electric Technology Gmbh Apparatus and method for close coupling of heat recovery steam generators with gas turbines
EP2325559A1 (de) 2009-11-19 2011-05-25 NEM Power-Systems, Niederlassung Deutschland der NEM B.V. Niederlande Anordnung zur Beeinflussung einer Abgasströmung
WO2011060935A1 (de) * 2009-11-19 2011-05-26 Nem Power-Systems Anordnung zur beeinflussung einer abgasströmung
US9291342B2 (en) 2009-11-19 2016-03-22 Nem Power-Systems Arrangement for influencing an exhaust gas flow
US9291177B2 (en) 2010-06-01 2016-03-22 Esg Mbh Duct having flow conducting surfaces
US20120174586A1 (en) * 2011-01-07 2012-07-12 Braden Manufacturing, Llc Duct with transition section for turbine exhaust
WO2016209365A1 (en) * 2015-06-22 2016-12-29 Saudi Arabian Oil Company Flow distribution device and method
US10280772B2 (en) 2015-06-22 2019-05-07 Saudi Arabian Oil Company Flow distribution device and method
US10563527B2 (en) 2015-06-22 2020-02-18 Saudi Arabian Oil Company Flow distribution device and method

Also Published As

Publication number Publication date
IT1290579B1 (it) 1998-12-10
ITMI970509A1 (it) 1998-09-07
EP0863364A3 (de) 1999-07-28

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