EP0752556B1 - Naturumlauf-Abhitzedampferzeuger - Google Patents
Naturumlauf-Abhitzedampferzeuger Download PDFInfo
- Publication number
- EP0752556B1 EP0752556B1 EP96110438A EP96110438A EP0752556B1 EP 0752556 B1 EP0752556 B1 EP 0752556B1 EP 96110438 A EP96110438 A EP 96110438A EP 96110438 A EP96110438 A EP 96110438A EP 0752556 B1 EP0752556 B1 EP 0752556B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- feed water
- drum
- natural circulation
- heating surface
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B29/00—Steam boilers of forced-flow type
- F22B29/04—Steam boilers of forced-flow type of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures, e.g. by injecting pressure-water temporarily
-
- 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
Definitions
- the invention relates to a natural circulation heat recovery steam generator which in the preamble of claim 1 Art.
- Such natural circulation heat recovery steam generator is from the EP 0 357 590 B1 is known.
- the Water circulation should avoid a circulation pump at least one injector arranged only in the Start-up phase a partial flow of water with the desired Flow direction in the downpipe and / or riser feeds.
- a starting aid Device for feeding steam, steam-water mixtures, Gases such as nitrogen or the like into the Riser pipe provided.
- the third option is as Starting aid between at least one entrance and Outlet collector of the evaporator heating surface a lockable Connection line arranged.
- the steam generator has a medium pressure system with one of the Evaporator heating surface upstream Feed water preheating surface (economizer), that will Starting pipe preferably according to claim 2 downstream of the Feed water preheating surface to the feed water line connected.
- the sub-claims 3 to 5 relate to further advantageous Refinements of the invention Natural heat recovery steam generator.
- a vertical exhaust duct 1 the exhaust AG from below is fed is a horizontally arranged Evaporator heating surface 2 and in the flow direction of the exhaust gas following also a feed water preheating surface 3 arranged horizontally.
- the heating surfaces 2 and 3 is one Overdrive drum 4 with respect to evaporator heating surface 4 assigned.
- the drum 4 is over at least one down pipe 5 with the inlet header 2a of the evaporator heating surface 2 connected, the outlet header 2b via a riser pipe 6th in a known manner with a calming room 7 in the Drum 4 is connected.
- Make items 2, 4, 5, 6 a natural circulation system when the steam generator is in stationary operation represents.
- the inlet header 3a of the feed water preheating surface 3 is from a feed water tank 8 a feed water line 9 in which a feed water pump 10 is arranged, feed water supplied. That in that Economizer 3 is preheated water over the Outlet collector 3b and a line 11 of the drum 4th fed.
- the entry collector 3a is a controllable one Valve 12 upstream and between outlet header 3b and drum 4 is a controllable three-way valve 13 switched on.
- the three-way valve 13 is via a Start pipe 14 connected to the down pipe 5.
- Between the Junction 15 and the drum 4 is a Check valve 16 arranged that a flow from the Drum 4 to inlet collector 2a (downflow) lets through freely, but blocks in the opposite direction.
- the downpipe is between the check valve 16 and the drum 4 5 connected to a discharge pipe 17 in which a valve 18 is arranged.
- the water can be in a sewage treatment plant or can be drained directly into a sewage system.
- valve 12 When the steam generator starts up, the valve 12 is opened and the three-way valve 13 adjusted so that at least a substantial part of that exiting the economizer Water via line 14 in the downpipe 5 before Check valve 16 is guided.
- the Feed water pump 10 impressed high pressure level of Economizers will flow safely through the Evaporator heating surface reached when starting up.
- the closed check valve 16 prevents the over Tube 14 brought water against the direction of fall in the downpipe 5 can enter.
- the predetermined water level for the drum 4 is thereby maintain that the riser 6 in the Drum introduced water over with valve 18 open Line or pipe 17 is discharged.
- the Steam formation in the evaporator heating surface 2 becomes the steam taken into the riser 6 and into the drum 4 registered.
- a point is then reached at which the density differences ensure that the Check valve opens, i.e. the water in the downpipe 5 through the check valve 16 to the inlet header 2a can flow.
- appropriate pressure measuring and / or Flow measuring devices are the pressure and flow conditions detected and the three-way valve 13 is controlled so that from the outlet collector 3b of the economizer 3 escaping water completely introduced into the drum 4 becomes.
- the valve 18 can also be in the discharge pipe be closed and the level control in the drum 4 takes place solely depending on the position of the valve 12 in the feed water line 9.
- the steam accumulating in the drum is over a Steam line 19, which is connected to the steam space of the drum 4 connected, dissipated and used. It is possible that the steam as in the EP 0 357 590 B1 is supplied with overheating.
- the Superheater heating surface should be in the direction of flow Exhaust gas, however, seen in front of the evaporator heating surface to be ordered.
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Claims (5)
- Naturumlauf-Abhitzedampferzeuger, insbesondere Naturumlauf-Abhitzedampferzeuger hinter Gasturbine mit mindestens einer Trommel (4), einer der Trommel Speisewasser über eine Speisewasserleitung (9, 11) zuführenden Speisewasserpumpe (10), einem Umlaufsystem bestehend aus mindestens einem Fallrohr (5), mindestens einer horizontal in einem vertikalen Abgaskanal (1) angeordneten Verdampferheizfläche (2) und mindestens einem Steigrohr (6) sowie einer Anfahrhilfe für den Naturumlauf,
dadurch gekennzeichnet, daß
die Speisewasserleitung (9, 11) stromab der Speisewasserpumpe (10) über mindestens ein Anfahrrohr (14) mit dem Fallrohr (5) steuerbar (13) verbunden ist und zwischen der Verbindungsstelle (15) des Anfahrrohres mit dem Fallrohr einerseits und der Trommel andererseits in dem Fallrohr ein entgegen der Fallströmung sperrendes Rückschlagventil (16) angeordnet ist und in Fallströmung gesehen vor dem Rückschlagventil das Fallrohr oder die Trommel mit mindestens einem Ableitrohr (17) steuerbar (18) verbunden ist. - Naturumlauf-Abhitzedampferzeuger nach Anspruch 1,
dadurch gekennzeichnet, daß
bei Anordnung einer der Verdampferheizfläche vorgeschalteteten Speisewasservorwärmheizfläche (3) das Anfahrrohr (14) stromab der Speisewasservorwärmheizfläche an die Speisewasserleitung (9, 11) angeschlossen ist. - Naturumlauf-Abhitzedampferzeuger nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß
das Anfahrrohr (14) an die Speisewasserleitung (9,11) über ein steuerbares Drei-Wege-Ventil angeschlossen ist, dessen anderer Auslaßweg mit der Trommel (4) verbunden ist. - Naturumlauf-Abhitzedampferzeuger nach mindestens einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß
die Speisewasservorwärmheizfläche stromab der Verdampferheizfläche in dem Abgaskanal angeordnet ist. - Naturumlauf-Abhitzedampferzeuger nach mindestens einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß
das Ableitrohr über ein steuerbares Ventil (18) mit einem der Speisewasserpumpe (10) vorgeschalteten Speisewasserbehälter (8) verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19524727A DE19524727C2 (de) | 1995-07-07 | 1995-07-07 | Naturumlauf-Abhitzedampferzeuger |
DE19524727 | 1995-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0752556A1 EP0752556A1 (de) | 1997-01-08 |
EP0752556B1 true EP0752556B1 (de) | 1999-02-17 |
Family
ID=7766223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110438A Expired - Lifetime EP0752556B1 (de) | 1995-07-07 | 1996-06-28 | Naturumlauf-Abhitzedampferzeuger |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0752556B1 (de) |
AT (1) | ATE176813T1 (de) |
DE (2) | DE19524727C2 (de) |
ES (1) | ES2130721T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015140361A1 (es) | 2014-03-21 | 2015-09-24 | Foster Wheeler Energia, S.L.U. | Ciclo de evaporación de un generador de vapor de circulación natural en conexión con un conducto vertical para un flujo ascendente de gas |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4346213B2 (ja) * | 2000-06-06 | 2009-10-21 | 株式会社東芝 | コンバインドサイクル発電プラント |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT392683B (de) * | 1988-08-29 | 1991-05-27 | Sgp Va Energie Umwelt | Abhitze-dampferzeuger |
BE1005793A3 (fr) * | 1992-05-08 | 1994-02-01 | Cockerill Mech Ind Sa | Chaudiere de recuperation de chaleur a circulation induite. |
DE4441008A1 (de) * | 1994-11-17 | 1996-05-23 | Siemens Ag | Anlage zur Dampferzeugung nach dem Naturumlaufprinzip und Verfahren zum Anstoß des Wasserumlaufs in einer derartigen Anlage |
-
1995
- 1995-07-07 DE DE19524727A patent/DE19524727C2/de not_active Expired - Fee Related
-
1996
- 1996-06-28 AT AT96110438T patent/ATE176813T1/de not_active IP Right Cessation
- 1996-06-28 ES ES96110438T patent/ES2130721T3/es not_active Expired - Lifetime
- 1996-06-28 DE DE59601312T patent/DE59601312D1/de not_active Expired - Lifetime
- 1996-06-28 EP EP96110438A patent/EP0752556B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015140361A1 (es) | 2014-03-21 | 2015-09-24 | Foster Wheeler Energia, S.L.U. | Ciclo de evaporación de un generador de vapor de circulación natural en conexión con un conducto vertical para un flujo ascendente de gas |
Also Published As
Publication number | Publication date |
---|---|
ATE176813T1 (de) | 1999-03-15 |
DE59601312D1 (de) | 1999-03-25 |
ES2130721T3 (es) | 1999-07-01 |
DE19524727A1 (de) | 1997-01-09 |
EP0752556A1 (de) | 1997-01-08 |
DE19524727C2 (de) | 1998-04-09 |
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