EP1116862B1 - Procédé et installation de production de vapeur - Google Patents

Procédé et installation de production de vapeur Download PDF

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Publication number
EP1116862B1
EP1116862B1 EP00126349A EP00126349A EP1116862B1 EP 1116862 B1 EP1116862 B1 EP 1116862B1 EP 00126349 A EP00126349 A EP 00126349A EP 00126349 A EP00126349 A EP 00126349A EP 1116862 B1 EP1116862 B1 EP 1116862B1
Authority
EP
European Patent Office
Prior art keywords
feedwater
steam
waste heat
heat boiler
steam generator
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
Application number
EP00126349A
Other languages
German (de)
English (en)
Other versions
EP1116862A3 (fr
EP1116862A2 (fr
Inventor
Bernd Gericke
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.)
MAN Energy Solutions SE
Original Assignee
MAN Turbo AG
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 MAN Turbo AG filed Critical MAN Turbo AG
Publication of EP1116862A2 publication Critical patent/EP1116862A2/fr
Publication of EP1116862A3 publication Critical patent/EP1116862A3/fr
Application granted granted Critical
Publication of EP1116862B1 publication Critical patent/EP1116862B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 process for the production of steam in a steam generator plant with a blast furnace fired Steam generator and a steam generator system.
  • the invention is based on the object, the generic To further develop the process such that on a Stützfashionung with noble fuels during the combustion of the top gas in the Continuous operation can be dispensed with.
  • Waste heat By coupling waste heat into the combustion process can also on lowered heating in the blast furnace gas Edelbrennstoffe be omitted as a support fire.
  • Waste heat is produced in sinter cooling plants of steelworks in which At the same time top gas as waste gas from the blast furnace process is produced.
  • the from the sintered ore to the cooling air emitted heat is transferred according to the invention Heat exchanger surfaces in the waste heat boiler through a Heat transfer system in the high pressure system of the steam generator coupled. This waste heat with different and especially low temperature level and waste gas with fluctuating and in particular low calorific value for production exploited by steam.
  • the temperature of the feedwater is before entering the Heat exchanger surfaces of the waste heat boiler on the physically lowered as low as possible. It is advantageous when the feed water through the heat exchange with the recycled steam turbine condensate is cooled. The on this way lowered temperature of the feedwater also allows decoupling heat from the low-temperature sintered cooling air.
  • the heat transfer system consists of two external ones additional preheaters, which the waste heat partly the Supply all combustion air and the fuel blast furnace gas.
  • the calorific value of the top gas is increased so much that in normal operation no support fire over high-calorie Noble fuels such as natural gas is necessary.
  • the drawing shows a process scheme for the production of steam.
  • a working according to the natural circulation principle steam generator. 1 contains a combustion chamber 2, one from top to bottom flowed through flue gas 3 is connected downstream. By doing Rauchgaszug 3 are Nachschaltsammlung vom as the superheater. 4 and the convection evaporator 4a is arranged.
  • a Natural circulation steam generator can also be a forced circulation or a Forced circulation steam generators are used. It can also another than the illustrated flue gas guide, z. B. Art a tower boiler can be used.
  • the steam generator 1 is fired with blast furnace gas.
  • the combustion chamber 2 is on the front side with only schematically shown Burners 5 provided.
  • the burner 5 are connected to an air line. 6 for supplying combustion air and with a blast gas line 7 connected to the supply of blast furnace gas.
  • This emergency fuel is supplied to the burners 5 via a gas line 8.
  • a steam line. 9 connected, which is guided to a steam turbine 10.
  • the Steam turbine 10 is connected to a generator 11 for generating electricity gekopppelt.
  • the steam turbine 10 can via a regulated Withdrawal 12 process steam taken in a steam network is fed.
  • the output of the steam turbine 10 is connected to an exhaust steam line 13 connected, which is guided to a capacitor 14.
  • Capacitor 14 the exhaust steam is condensed, and the Steam turbine condensate is via a condensate line 15, in a feed pump 16 is arranged, to a degasser 17th promoted.
  • the degasser 17 is operated with bleed steam, the is removed via a tap line 18 of the steam turbine 10.
  • a feedwater line 19th connected, in which a feedwater pump 20 is arranged, the pressure of the feedwater on the process pressure of the Steam generator 1 increased.
  • a Water / water heat exchanger 21 arranged at the same time the condensate line 15 is connected.
  • the feedwater line 19 is connected in parallel Heat exchanger surfaces 22 out in a waste heat boiler 23rd are arranged. Downstream of the heat exchanger surfaces 22nd is the feedwater line 19 with an external air preheater 24, to which the air line 6 is connected, and in parallel with a gas preheater 25, to which the blast furnace gas line 7 connected, connected. After the air preheater 24 and the gas preheater 25 is the feedwater line 19 to a feedwater pre-heater 26 led by the flue gas flows through, leaving the steam generator 1. This Feedwater pre-heater 26 is water-side with the water-steam cycle connected to the steam generator 1.
  • the waste heat boiler 23 is a sintering plant for sintering Fine ores downstream on a sintering belt.
  • air is resting on the sintering belt Layer fed to the sintering mixture or the sinter.
  • Air is the sintering process by the combustion of the Sinter mixture admixed silt maintained.
  • To Successful sintering is through additional fan cooling air through pressed or sucked the sinter. In this way falls longitudinally of the sintered cooling belt SK1 in the throttle cable 30 exhaust air with different temperatures and in different quantities or, as shown in the throttle cable 31, cooling air with a corresponding mixing temperature in 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 of the Waste heat boiler 23 are with connecting pieces for the different exhaust gas flows 27, 28, 29 provided.
  • Exhaust gas flow 29 which has a lower temperature than that Exhaust gas stream 28 is in the waste heat boiler 23 at one point fed to the exhaust stream 28 by cooling a Temperature has assumed that of about the exhaust stream 29th equivalent.
  • Both sinter cooling units SK1 and SK2 can be used in relation to on the above-described heat extraction in series be switched.
  • the water / water heat exchanger 21 is degassed Feed water from the degasser 17 in heat exchange with the Condensate from the condenser 14 as far as possible cooled.
  • the feedwater pump 20 By the feedwater pump 20, the pressure of the cooled Feed water to the process pressure of the steam generator 1 brought.
  • the temperature of the cooled and high-tensioned feedwater increased accordingly. With this temperature, the feed water enters the Air preheater 24 and the gas preheater 25, whereby the Combustion air and the top gas in each case the highest possible to be preheated.
  • the feed water Upon entering the feedwater preheater 26 the feed water then still has a temperature of a few Kelvin above the temperature in the degasser 17 on.
  • the values Depending on the conditions at the sinter cooling units SK1, SK2 and strong depending on the steam parameters present vary.
  • the feed water is before entering the Heat exchanger surfaces 22 of the waste heat boiler 23 on the physically cooled as low as possible temperature. Consists due to the composition of the waste heat boiler 23 flowing exhaust gases do not risk that a Dew point falls occurs, the corrosion damage to the Heat exchange surfaces causes, as described, the Feed water before entering the heat exchanger surfaces through Steam turbine condensate cooled. That usually happens Waste heat boiler to, in which exhaust air from sintered cooling belts cooled becomes. However, it must be expected with corrosion damage, so must be the temperature of the feedwater before entering the Heat exchanger surfaces 22 of the waste heat boiler 23 about the Temperature of the degasser 17 correspond.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Physical Water Treatments (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Air Supply (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (8)

  1. Procédé de production de vapeur dans une installation de production de vapeur comprenant un générateur de vapeur (1) chauffé au gaz de haut-fourneau, caractérisé en ce que l'eau d'alimentation dégazée puis mise sous haute pression du générateur de vapeur (1) est préchauffée en échange thermique avec de l'air d'évacuation dans une chaudière de récupération (23) indépendante du générateur de vapeur (1), et que le gaz de haut-fourneau et l'air comburant envoyés dans le générateur de vapeur (1) sont préchauffés en échange thermique dans des préchauffeurs extérieurs (24, 25) avec l'eau d'alimentation préchauffée.
  2. Procédé suivant la revendication 1, caractérisé en ce que l'eau d'alimentation dégazée est refroidie dans un échangeur de chaleur eau/eau (21) extérieur en échange thermique avec le condensat de turbine à vapeur, que la pression de l'eau d'alimentation dégazée est accrue, et que l'eau d'alimentation refroidie et sous haute pression est envoyée dans la chaudière de récupération.
  3. Procédé suivant l'une des revendications 1 et 2, caractérisé en ce que la chaudière de récupération (23) est montée en aval d'une installation de frittage de fines de minerai et que les flux d'air d'évacuation (27, 28, 29), produits à différentes températures dans l'installation de refroidissement d'agglomérés de minerais, sont injectés séparément les uns des autres dans la chaudière de récupération (23) suivant leur niveau de température respectif.
  4. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce que l'eau d'alimentation est refroidie à la température minimale physiquement possible avant son entrée dans la chaudière de récupération (23).
  5. Installation de production de vapeur pour la mise en oeuvre du procédé suivant les revendications 1 à 4, le générateur de vapeur (1) de l'installation de production de vapeur présentant une chambre de combustion chauffée au gaz de haut-fourneau (2) et des corps de chauffe aval, en aval desquels sont montés une turbine à vapeur (10), un condenseur (14) et un dégazeur (17), et une conduite d'eau d'alimentation (19), dans laquelle est disposée une pompe à eau d'alimentation (20) pour l'élévation de pression, étant raccordée au dégazeur (17), caractérisée en ce que la conduite d'eau d'alimentation (19) est guidée en direction de surfaces d'échange thermique (22), qui sont disposées à l'intérieur d'une chaudière de récupération (23) indépendante du générateur de vapeur (1), et que les surfaces d'échange thermique (22) de la chaudière de récupération (23) sont raccordées côté eau d'alimentation à un préchauffeur (24) pour le préchauffage d'air comburant et à un préchauffeur (25) pour le préchauffage de gaz de haut-fourneau.
  6. Installation de production de vapeur suivant la revendication 5, caractérisée en ce qu'un échangeur thermique eau/eau (21), raccordé à la conduite de condensat (15) entre le condenseur (14) et le dégazeur (17), est disposé dans la conduite d'eau d'alimentation (19) entre le dégazeur (17) et la pompe à eau (20).
  7. Installation de production de vapeur suivant l'une des revendications 5 et 6, caractérisée en ce que la chaudière de récupération (23) est montée en aval d'une installation de frittage de fines de minerai.
  8. Installation de production de vapeur suivant la revendication 7, caractérisée en ce que la chaudière de récupération (23) est partagée en deux et est munie de plusieurs raccords pour l'arrivée de différents flux d'air d'évacuation (27, 28, 29).
EP00126349A 2000-01-15 2000-12-02 Procédé et installation de production de vapeur Expired - Lifetime EP1116862B1 (fr)

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 EP1116862A2 (fr) 2001-07-18
EP1116862A3 EP1116862A3 (fr) 2002-09-25
EP1116862B1 true EP1116862B1 (fr) 2005-02-09

Family

ID=7627638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126349A Expired - Lifetime EP1116862B1 (fr) 2000-01-15 2000-12-02 Procédé et installation de production de vapeur

Country Status (4)

Country Link
EP (1) EP1116862B1 (fr)
AT (1) ATE288997T1 (fr)
DE (2) DE10001512A1 (fr)
ES (1) ES2235747T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3003337B1 (fr) 2013-03-12 2017-06-23 Ingenica Ingenierie Ind Procede de generation de vapeur d'eau et procede de recuperation de petrole brut par drainage gravitaire assiste par injection de vapeur d'eau (sagd) incluant ledit procede de generation de vapeur d'eau
FR3025828B1 (fr) 2014-09-11 2017-06-02 Ingenica Ingenierie Ind Procede de generation de vapeur d'eau a partir d'une eau brute, en particulier d'une eau de purge sortant d'un generateur de vapeur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
DE4327476C2 (de) * 1993-08-16 1997-04-03 Steinmueller Gmbh L & C Verfahren zum Betrieb eines mit fossilen Brennstoffen gefeuerten Dampferzeugers und Dampferzeugungsanlage
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
DE19645322B4 (de) * 1996-11-04 2010-05-06 Alstom 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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP1116862A3 (fr) 2002-09-25
DE50009474D1 (de) 2005-03-17
EP1116862A2 (fr) 2001-07-18
ATE288997T1 (de) 2005-02-15
ES2235747T3 (es) 2005-07-16
DE10001512A1 (de) 2001-07-19

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