EP1116862A2 - Verfahren zur Erzeugung von Dampf und eine Dampferzeugeranlage - Google Patents
Verfahren zur Erzeugung von Dampf und eine Dampferzeugeranlage Download PDFInfo
- Publication number
- EP1116862A2 EP1116862A2 EP00126349A EP00126349A EP1116862A2 EP 1116862 A2 EP1116862 A2 EP 1116862A2 EP 00126349 A EP00126349 A EP 00126349A EP 00126349 A EP00126349 A EP 00126349A EP 1116862 A2 EP1116862 A2 EP 1116862A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- feed water
- waste heat
- steam
- heat boiler
- 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.)
- Granted
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Classifications
-
- 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
- F22B1/183—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 in combination with metallurgical converter installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/185—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters using waste heat from outside the plant
Definitions
- the invention relates to a method for generating steam in a steam generator system with a gas fired with blast furnace gas Steam generator and a steam generator system.
- the invention is based on the object of the generic type Developing processes in such a way that they are based on support firing with noble fuels in the combustion of the blast furnace gas in Continuous operation can be dispensed with.
- Waste heat is generated in sinter cooling systems in metallurgical plants, in which at the same time top gas as waste gas from the blast furnace process is produced. From the sintered fine ores to the cooling air emitted heat is over according to the invention Heat exchanger surfaces in the waste heat boiler by Heat transfer system in the high pressure system of the steam generator coupled. So that waste heat with different and especially low temperature level and waste gas with fluctuating and in particular low calorific value for generation exploited by steam.
- the heat utilization in the area of the sinter cooling systems is designed due to the special temperature and Cooling air quantity ratios are particularly complex.
- Cooling air is extracted from heat, making heat sources different Temperature levels arise.
- a special waste heat boiler concept is required.
- the most interesting part of the waste heat from the Sinter cooling system only makes up a small percentage of the total amount of cooling air. While this is proportionate low cooling air mass flow thanks to its higher gas temperature lends itself particularly to high feed water preheating the larger cooling air mass flow with low temperature remaining feed water preheating used.
- the temperature of the feed water is checked before entering the Heat exchanger surfaces of the waste heat boiler on the physical lowest possible value lowered. It is advantageous if the feed water through the heat exchange with the recycled steam turbine condensate is cooled. The on this way, lowered temperature of the feed water also allows extract heat from the low-temperature sintered cooling air.
- the heat transfer system consists of two external ones additional preheaters, some of which is the waste heat Add top gas to all combustion air and fuel. This increases the calorific value of the blast furnace gas to such an extent that in normal operation no support fire over high calorific Noble fuels like natural gas is necessary.
- FIG. 1 An embodiment of the invention is in the drawing shown and is explained in more detail below.
- the drawing shows a process scheme for generating steam.
- a steam generator 1 which works according to the natural circulation principle contains a combustion chamber 2, the one from top to bottom flowed flue gas duct 3 is connected. By doing Flue gas duct 3 are secondary heating surfaces like superheater 4 and the convection evaporator 4a. Instead of one Maturum steam generator can also be a forced circulation or a Forced-flow steam generators are used. It can also another than the flue gas duct shown, e.g. B. according to Art a tower boiler can be used.
- the steam generator 1 is fired with blast furnace gas.
- the combustion chamber 2 is shown on the front side with only schematically Provide burners 5.
- the burners 5 have an air line 6 for supplying combustion air and with a top gas line 7 connected to the supply of blast furnace gas.
- This emergency fuel is fed to the burners 5 via a gas line 8.
- a steam line 9 is connected to the superheater 4 of the steam generator 1 connected, which is guided to a steam turbine 10.
- the Steam turbine 10 has a generator 11 for generating electricity coupled.
- the steam turbine 10 can be regulated Withdrawal 12 process steam can be extracted into a steam network is fed.
- the outlet of the steam turbine 10 is connected to an exhaust steam line 13 connected, which is led to a capacitor 14.
- Condenser 14 the exhaust steam is condensed, and that Steam turbine condensate is in via a condensate line 15 a feed pump 16 is arranged to a degasser 17 promoted.
- the degasser 17 is operated with bleed steam is removed from the steam turbine 10 via a bleed line 18.
- a feed water line 19 is connected to the degasser 17 connected in which a feed water pump 20 is arranged, which the pressure of the feed water to the process pressure of the Steam generator 1 increased.
- the feed water line 19 is between the degasser 17 and the feed water pump 20 Water / water heat exchanger 21 arranged, the at the same time the condensate line 15 is connected.
- the feed water line 19 is connected in parallel Heat exchanger surfaces 22 performed in a waste heat boiler 23rd are arranged. Downstream from the heat exchanger surfaces 22 is the feed water line 19 with an external air preheater 24, to which the air line 6 is connected, and in parallel for this purpose with a gas preheater 25 to which the top gas line 7 connected, connected. Following the air preheater 24 and the gas preheater 25 is the feed water line 19 a feed water preheater 26 led by the flue gas is flowed through, which leaves the steam generator 1. This Feed water preheater 26 is on the water side with the water-steam cycle of the steam generator 1 connected.
- the waste heat boiler 23 is a sintering system for sintering Subsequent fine ores on a sintered belt.
- the Sintering process becomes air that rests on the sintering belt Layer of the sintered mixture or the sinter supplied. Through the Air becomes the sintering process through the combustion of the Maintain sintered mixture of mixed fine coal.
- To Sintering is carried out by additional fans with cooling air pressed or sucked the sinter. This way it falls lengthways of the sintered cooling belt SK1 in the gas flue 30 with exhaust air different temperatures and in different amounts or, as shown in the throttle cable 31, cooling air with a corresponding mixing temperature on the sintered cooling belt SK2.
- the waste heat boiler 23 is divided into two and has two throttle cables 30, 31.
- the heat exchanger surfaces 22 are distributed to these two throttle cables 30, 31.
- the throttle cables 30, 31 des Waste heat boilers 23 are with connecting pieces for the different exhaust gas flows 27, 28, 29 provided.
- Both sinter cooling systems SK1 and SK2 can be used to the heat extraction described above also in series be switched.
- the feed water is before entering the Heat exchanger surfaces 22 of the waste heat boiler 23 on the physically lowest possible temperature cooled. Consists due to the composition of the waste heat boiler 23 exhaust gases flowing through there is no risk that a Below the dew point, the corrosion damage to the Heat exchanger surfaces causes, as described, that Feed water through before entering the heat exchanger surfaces Steam turbine condensate cooled. This usually happens Waste heat boilers in which exhaust air from sintered cooling belts is cooled becomes. However, corrosion damage must be expected, so the temperature of the feed water must be before entering the Heat exchanger surfaces 22 of the waste heat boiler 23 approximately Temperature of the degasser 17 correspond.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Air Supply (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims (8)
- Verfahren zur Erzeugung von Dampf in einer Dampferzeugeranlage mit einem mit Gichtgas gefeuerten Dampferzeuger (1), dadurch gekennzeichnet, dass das entgaste und anschließend hochgespannte Speisewasser des Dampferzeugers (1) in einem von dem Dampferzeuger (1) unabhängigen Abhitzekessel (23) im Wärmetausch mit Abluft vorgewärmt wird und dass das dem Dampferzeuger (1) zugeführte Gichtgas und die dem Dampferzeuger (1) zugeführte Verbrennungsluft im Wärmetausch mit dem vorgewärmten Speisewasser in außen liegenden Vorwärmern (24, 25) vorgewärmt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das entgaste Speisewasser in einem externen Wasser/Wasser-Wärmetauscher (21) im Wärmetausch mit Dampfturbinenkondensat gekühlt wird, dass der Druck des entgasten Speisewassers erhöht und dass das gekühlte und hochgespannte Speisewasser dem Ahitzekessel zugeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abhitzekessel (23) einer Sinteranlage zur Sinterung von Feinerzen nachgeschaltet ist und dass die in der Sinterkühlanlage mit unterschiedlichen Temperaturen anfallenden Abluftströme (27, 28, 29) entsprechend ihrem jeweiligen Temperaturniveau getrennt voneinander in den Abhitzekessel (23) eingeführt werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Speisewasser vor dem Eintritt in den Abhitzekessel (23) auf die physikalisch niedrigstmögliche Temperatur gekühlt wird.
- Dampferzeugeranlage zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 4, wobei der Dampferzeuger (1) der Dampferzeugeranlage eine mit Gichtgas befeuerte Brennkammer (2) und Nachschaltheizflächen aufweist, denen eine Dampfturbine (10), ein Kondensator (14) und ein Entgaser (17) nachgeschaltet sind und wobei an den Entgaser (17) eine Speisewasserleitung (19) angeschlossen ist, in der eine Speisewasserpumpe (20) zur Druckerhöhung angeordnet ist, dadurch gekennzeichnet, dass die Speisewasserleitung (19) zu Wärmetauscherflächen (22) geführt ist, die innerhalb eines von dem Dampferzeuger (1) unabhängigen Abhitzekessels (23) angeordnet sind und dass die Wärmetauscherflächen (22) des Abhitzekessels (23) speisewasserseitig mit einem Vorwärmer (24) zur Vorwärmung von Verbrennungsluft und mit einem Vorwärmer (25) zur Vorwärmung von Gichtgas verbunden sind.
- Dampferzeugeranlage nach Anspruch 5, dadurch gekennzeichnet, dass in der Speisewasserleitung (19) zwischen dem Entgaser (17) und der Speisewasserpumpe (20) ein Wasser/Wasser-Wärmetauscher (21) angeordnet ist, der an die Kondensatleitung (15) zwischen dem Kondensator (14) und dem Entgaser (17) angeschlossen ist.
- Dampferzeugeranlage nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Abhitzekessel (23) einer Sinteranlage zur Sinterung von Feinerzen nachgeschaltet ist.
- Dampferzeugeranlage nach Anspruch 7, dadurch gekennzeichnet, dass der Abhitzekessel (23) zweigeteilt und mit mehreren Anschlüssen für die Zufuhr von unterschiedlichen Abluftströmen (27, 28, 29) versehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10001512 | 2000-01-15 | ||
DE10001512A DE10001512A1 (de) | 2000-01-15 | 2000-01-15 | Verfahren zur Erzeugung von Dampf und eine Dampferzeugeranlage |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1116862A2 true EP1116862A2 (de) | 2001-07-18 |
EP1116862A3 EP1116862A3 (de) | 2002-09-25 |
EP1116862B1 EP1116862B1 (de) | 2005-02-09 |
Family
ID=7627638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00126349A Expired - Lifetime EP1116862B1 (de) | 2000-01-15 | 2000-12-02 | Verfahren zur Erzeugung von Dampf und eine Dampferzeugeranlage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1116862B1 (de) |
AT (1) | ATE288997T1 (de) |
DE (2) | DE10001512A1 (de) |
ES (1) | ES2235747T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9604864B2 (en) | 2013-03-12 | 2017-03-28 | Ingenica Ingenierie Industrielle | Steam generation method and method for recovering crude oil by steam-assisted gravity drainage (SAGD) including said steam generation method |
US10054308B2 (en) | 2014-09-11 | 2018-08-21 | Ingenica Ingenierie Industrielle | Method for generating steam from raw water, in particular from blow down water coming from a steam generator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101294502B (zh) * | 2007-04-23 | 2010-12-08 | 张庆玉 | 多功能真空火力水力双发电和提水调水站 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4327476A1 (de) * | 1993-08-16 | 1995-02-23 | Steinmueller Gmbh L & C | Verfahren zum Betrieb eines mit fossilen Brennstoffen befeuerten Dampferzeugers und Dampferzeugungsanlage zur Durchführung des Verfahrens |
DE29608816U1 (de) * | 1996-05-15 | 1996-08-01 | Deutsche Babcock Babcock Lentjes Kraftwerkstechnik GmbH Standort Berlin, 10407 Berlin | Anordnung zur Nutzung der Abwärme von Zementklinkerlinien |
DE19645322A1 (de) * | 1996-11-04 | 1998-05-07 | Asea Brown Boveri | Kombinierte Kraftwerksanlage mit einem Zwangsdurchlaufdampferzeuger als Gasturbinen-Kühlluftkühler |
JPH11325406A (ja) * | 1998-05-07 | 1999-11-26 | Ebara Corp | 火力発電設備における給水加熱装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2243380C3 (de) * | 1972-09-04 | 1978-07-20 | Kraftwerk Union Ag, 4330 Muelheim | Dampfkraftanlage mit rauchgasbeheiztem Speisewasservorwärmer und wasserbeheiztem Luftvorwärmer |
DE3324283A1 (de) * | 1983-07-06 | 1985-01-24 | Kleinewefers Energie- und Umwelttechnik GmbH, 4150 Krefeld | Sinterbandanlage mit einrichtung fuer die abhitzeverwertung |
-
2000
- 2000-01-15 DE DE10001512A patent/DE10001512A1/de not_active Withdrawn
- 2000-12-02 EP EP00126349A patent/EP1116862B1/de not_active Expired - Lifetime
- 2000-12-02 AT AT00126349T patent/ATE288997T1/de active
- 2000-12-02 DE DE50009474T patent/DE50009474D1/de not_active Expired - Lifetime
- 2000-12-02 ES ES00126349T patent/ES2235747T3/es not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4327476A1 (de) * | 1993-08-16 | 1995-02-23 | Steinmueller Gmbh L & C | Verfahren zum Betrieb eines mit fossilen Brennstoffen befeuerten Dampferzeugers und Dampferzeugungsanlage zur Durchführung des Verfahrens |
DE29608816U1 (de) * | 1996-05-15 | 1996-08-01 | Deutsche Babcock Babcock Lentjes Kraftwerkstechnik GmbH Standort Berlin, 10407 Berlin | Anordnung zur Nutzung der Abwärme von Zementklinkerlinien |
DE19645322A1 (de) * | 1996-11-04 | 1998-05-07 | Asea Brown Boveri | Kombinierte Kraftwerksanlage mit einem Zwangsdurchlaufdampferzeuger als Gasturbinen-Kühlluftkühler |
JPH11325406A (ja) * | 1998-05-07 | 1999-11-26 | Ebara Corp | 火力発電設備における給水加熱装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02, 29. Februar 2000 (2000-02-29) & JP 11 325406 A (EBARA CORP), 26. November 1999 (1999-11-26) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9604864B2 (en) | 2013-03-12 | 2017-03-28 | Ingenica Ingenierie Industrielle | Steam generation method and method for recovering crude oil by steam-assisted gravity drainage (SAGD) including said steam generation method |
US10054308B2 (en) | 2014-09-11 | 2018-08-21 | Ingenica Ingenierie Industrielle | Method for generating steam from raw water, in particular from blow down water coming from a steam generator |
Also Published As
Publication number | Publication date |
---|---|
EP1116862B1 (de) | 2005-02-09 |
EP1116862A3 (de) | 2002-09-25 |
DE50009474D1 (de) | 2005-03-17 |
DE10001512A1 (de) | 2001-07-19 |
ATE288997T1 (de) | 2005-02-15 |
ES2235747T3 (es) | 2005-07-16 |
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