EP2442061A2 - Device with a heat exchanger and method for operating a heat exchanger of a steam generation assembly - Google Patents
Device with a heat exchanger and method for operating a heat exchanger of a steam generation assembly Download PDFInfo
- Publication number
- EP2442061A2 EP2442061A2 EP11006156A EP11006156A EP2442061A2 EP 2442061 A2 EP2442061 A2 EP 2442061A2 EP 11006156 A EP11006156 A EP 11006156A EP 11006156 A EP11006156 A EP 11006156A EP 2442061 A2 EP2442061 A2 EP 2442061A2
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- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- medium
- bypass
- inlet
- outlet
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- 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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Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 239000003546 flue gas Substances 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B15/00—Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
Definitions
- FIGS. 3 and 4 are the ones in the Figures 1 and 2 shown circuits in a corresponding manner, however, each described with 2 two-way valves.
- the bypass valve 11 and the supply valve 13 have been combined to form a first three-way valve 17, while the bypass valve 12 and the discharge valve 14 are combined to form a second three-way valve 18.
- the first bypass valve 17 distributed
- the second three-way valve 18 performs the guided in the derivative 6 medium with the medium coming from the second bypass 9 to the medium outlet 10th
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Chimneys And Flues (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung mit einem Wärmetauscher mit einer Zuleitung für ein Medium von einem Mediumeinlass zum Wärmetauschereingang und einer Ableitung vom Wärmetauscherausgang.The invention relates to a device with a heat exchanger with a supply line for a medium from a medium inlet to the heat exchanger inlet and a discharge from the heat exchanger outlet.
Derartige Wärmetauscher werden in vielen Anwendungen benötigt. Die übertragene Energie wird dabei von den unterschiedlichen Temperaturen der im Wärmetaucher geführten Medien bestimmt. Hierzu sind unterschiedliche Regelungsmechanismen bekannt, um den Volumenstrom dieser Medien zu variieren. Da die Wärmetauscherfläche in der Regel nicht verändert werden kann, häufig jedoch bestimmte Medientemperaturen am Wärmetauscherausgang erreicht werden sollten, wird die Strömungsgeschwindigkeit im Wärmetauscher variiert.Such heat exchangers are needed in many applications. The transmitted energy is determined by the different temperatures of the guided in the heat exchanger media. For this purpose, different control mechanisms are known to vary the flow rate of these media. Since the heat exchanger surface can not be changed as a rule, but often certain media temperatures should be achieved at the heat exchanger outlet, the flow rate in the heat exchanger is varied.
Eine Alternative hierzu liegt darin, den Wärmetauscher im Gleichstrom oder im Gegenstrom zu betreiben. Während im Gleichstrombetrieb am Wärmetauscherausgang die Medientemperaturen stark angenähert werden können, bietet der Gegenstrombetrieb in der Regel einen höheren Wärmeaustausch bei gleicher Wärmetauscherfläche. Die Umschaltung von Gleichstrom auf Gegenstrom scheidet als Regelungsmechanismus aus, da bereits beim Einbau des Wärmetauschers die Verrohrung festgelegt wird und diese während des Betriebs nicht mehr verändert werden kann.An alternative is to operate the heat exchanger in cocurrent or countercurrent. While in DC operation at the heat exchanger output, the media temperatures can be closely approximated, the countercurrent operation usually provides a higher heat exchange at the same heat exchanger surface. The switchover from DC to countercurrent excretes as a control mechanism, since already during installation of the heat exchanger, the piping is set and this can not be changed during operation.
Ein spezielles Anwendungsgebiet besonders großer Wärmetauscher liegt in der Erhitzung und Kühlung der Gase von Feuerungsanlagen, die als Dampferzeugungsanlage betrieben werden. Bei derartigen Anlagen ist die dem Feuerrost beziehungsweise dem Verbrennungsbereich zugeführte Luft vorzuwärmen und die Abgase werden gekühlt. Dabei werden Wärmetauscher als Verdampfer und Überhitzer eingesetzt, um eine Turbine mit Dampf zu versorgen. Das Speisewasser des Dampferzeugers wird häufig in einem Ecomizer zur weiteren Abkühlung der Rauchgase vorgewärmt.A special field of application of particularly large heat exchangers is the heating and cooling of the gases of combustion plants, which are operated as a steam generating plant. In such systems, the air supplied to the grate or the combustion area air is preheated and the exhaust gases are cooled. Heat exchangers are used as evaporators and superheaters to supply a turbine with steam. The feedwater of the steam generator is often preheated in an Ecomizer for further cooling of the flue gases.
Während der Laufzeit der Dampferzeugungsanlage variiert vom Verbrennungsprozess vorgegeben die Abgastemperatur. Außerdem entstehen Ablagerungen im Verdampfer und in den Überhitzern, die die Effektivität der Wärmetauscher beeinträchtigen. Dadurch wird schließlich der Ecomizer mit unterschiedlichen Abgastemperaturen beaufschlagt. Außerdem variiert auch der Wirkungsgrad des Ecomizers entsprechend den durch die Rauchgase hervorgerufenen Ablagerungen an den Wärmetauscherrohren.During the running time of the steam generating plant, the exhaust gas temperature varies depending on the combustion process. In addition, deposits are formed in the evaporator and in the superheaters, which affect the effectiveness of the heat exchanger. As a result, the Ecomizer will eventually be exposed to different exhaust gas temperatures. In addition, the efficiency of the Ecomizers varies according to the deposits caused by the flue gases on the heat exchanger tubes.
Meist ist hinter dem Ecomizer eine Entstickungsanlage für die Rauchgase vorgesehen, deren katalytische Effekte nur bei bestimmten Temperaturen optimal ablaufen. Diese liegen beispielsweise bei einer SCR-Anlage zwischen 250 °C und 270 °C.Usually behind the Ecomizer a denitrification system for the flue gases is provided, the catalytic effects of which run optimally only at certain temperatures. These are, for example, in an SCR plant between 250 ° C and 270 ° C.
Während den ersten Betriebsstunden einer derartigen Anlage haben die Wärmetauscher noch einen hohen Wirkungsgrad, der während der Betriebsdauer jedoch in Folge von Ablagerungen sinkt. Die Laufdauer der Anlage wird insbesondere auch davon bestimmt, dass die Rauchgastemperatur an der Entstickungsanlage in einem bestimmten Temperaturfenster bleiben muss.During the first hours of operation of such a system, the heat exchangers still have a high efficiency, which decreases during the service life, however, as a result of deposits. The duration of the In particular, the installation is also determined by the fact that the flue gas temperature at the denitrification plant must remain within a certain temperature window.
Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung derart weiterzuentwickeln, dass länger die angestrebten Temperaturfenster eingehalten werden können.The invention is therefore based on the object to further develop a generic device such that the desired temperature window can be maintained longer.
Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung dadurch gelöst, dass sie einen ersten Bypass vom Mediumeinlass zur Ableitung und einen zweiten Bypass von der Zuleitung zum Mediumauslass und Ventile aufweist, so dass das Medium auch vom Wärmetauscherausgang zum Wärmetauschereingang fließen kann.In a generic device, this object is achieved in that it has a first bypass from the medium inlet to the outlet and a second bypass from the inlet to the medium outlet and valves, so that the medium can also flow from the heat exchanger outlet to the heat exchanger inlet.
Das Vorsehen von festen Bypässen an den angegebenen Stellen führt dazu, dass durch die einfache Nachrüstung von zwei Leitungen und entsprechenden Ventilen der Wärmetauscher im Gleichstrom und im Gegenstrom betrieben werden kann.The provision of fixed bypasses at the specified points means that the heat exchanger can be operated in cocurrent and countercurrent by simply retrofitting two lines and corresponding valves.
Am Beispiel eines Ecomizers einer Dampferzeugungsanlage führt dies dazu, dass der Ecomizer beispielsweise anfangs im Gleichstrom betrieben werden kann. Wenn die Effektivität des Wärmetauschers durch Ablagerungen sinkt, steigt die Rauchgastemperatur. Durch Umschaltung des Wärmetauschers von Gleichstrombetrieb auf Gegenstrombetrieb wird dann die Rauchgastemperatur gesenkt. Der Wärmetauscher kann dadurch weiter betrieben werden, da die Rauchgastemperatur weiter im vorgegebenen Temperaturfenster bleibt. Am Beispiel des Ecomizers, der vor eine SCR-Anlage geschaltet ist, kann die Rauchgastemperatur somit durch reines Umschalten von Gleichstrom auf Gegenstrom von 265 Grad Celsius auf 255 Grad Celsius gesenkt werden. Dadurch kann die Laufzeit der Anlage deutlich verlängert werden.Using the example of an ecometer of a steam generating plant, this means that the Ecomizer can initially be operated in DC, for example. When the efficiency of the heat exchanger decreases due to deposits, the flue gas temperature rises. By switching the heat exchanger from DC operation to countercurrent operation, the flue gas temperature is then lowered. The heat exchanger can continue to be operated because the flue gas temperature continues to be within the given Temperature window remains. Using the example of the Ecomizer, which is connected upstream of an SCR system, the flue gas temperature can thus be reduced from 265 degrees Celsius to 255 degrees Celsius by switching from direct current to countercurrent. This can significantly extend the runtime of the system.
Es ist möglich, in der Zuleitung, der Ableitung und den Bypässen Ventile vorzusehen. Diese Ventile können sinnvoll so gesteuert werden, dass keine Leitungen mit überhitzten Medien beidseitig verschlossen werden können. Dies ist insbesondere bei Dampferzeugungsanlagen notwendig, um zu hohe Drücke in den Leitungen zu vermeiden.It is possible to provide valves in the supply line, the discharge line and the bypasses. These valves can be meaningfully controlled so that no lines with superheated media can be closed on both sides. This is particularly necessary in steam generation systems to avoid excessive pressures in the lines.
Um eine derartige Regelung zu vereinfachen wird vorgeschlagen, dass zwischen Mediumeinlass, erstem Bypass und Zuleitung ein Dreiwegeventil angeordnet ist. Ein Dreiwegeventil sorgt dafür, dass das Medium vom Mediumeinlass auf Bypass und Zuleitung verteilt wird. Dabei kann das Dreiwegeventil so eingestellt werden, dass es immer den gesamten Zustrom am Mediumeinlass durchleitet, ohne dass an dieser Stelle das Leitungssystem im Querschnitt reduziert wird oder sogar geschlossen wird.In order to simplify such a regulation, it is proposed that a three-way valve be arranged between the medium inlet, the first bypass and the feed line. A three-way valve ensures that the medium is distributed from the medium inlet to the bypass and supply line. In this case, the three-way valve can be set so that it always passes through the entire inflow at the medium inlet, without that at this point the line system is reduced in cross section or even closed.
Vorteilhaft ist es, in entsprechender Weise auch zwischen Mediumauslass, zweitem Bypass und Ableitung ein Dreiwegeventil anzuordnen. Auch hier sollte ein Schließen der Rohrleitungen vermieden werden und vorzugsweise sogar während der Schaltung des Ventils der Gesamtvolumenstrom nahezu konstant bleiben.It is advantageous to arrange a three-way valve in a corresponding manner also between medium outlet, second bypass and discharge. Again, a closing of the pipes should be avoided and preferably remain even during the circuit of the valve, the total volume flow almost constant.
Ein vorteilhafter Einsatzbereich der Vorrichtung liegt bei der Behandlung von flüssigen Medien. Dies betrifft vor allem Medien, die über 130 °C heiß sind.An advantageous use of the device is in the treatment of liquid media. This mainly affects media that are over 130 ° C hot.
Dabei können dem Medium gegenüber im Wärmetauscher unterschiedliche Medien geführt werden. Ein breiter Anwendungsbereich erschließt sich bei Wärmetauschern, die auch von einem Gas durchflossen sind.In this case, different media can be passed to the medium in the heat exchanger. A wide range of applications opens up for heat exchangers, which are also traversed by a gas.
Eine Ausführungsvariante sieht hierbei vor, dass das Gas in Richtung vom Wärmetauschereingang zum Wärmetauscherausgang fließt. Je nach Schaltung der Anlage kann das Gas jedoch auch vom Wärmetauscherausgang zum Wärmetauschereingang fließen.One embodiment variant provides that the gas flows in the direction from the heat exchanger inlet to the heat exchanger outlet. Depending on the circuit of the system, however, the gas can also flow from the heat exchanger outlet to the heat exchanger inlet.
Da ein breites Anwendungsgebiet der Vorrichtung im Bereich der Dampferzeuger liegt, wird vorgeschlagen, dass das Gas eine Temperatur oberhalb von 100 °C aufweist.Since a broad field of application of the device is in the field of steam generators, it is proposed that the gas has a temperature above 100 ° C.
Die beschriebene Vorrichtung ist bei einer Dampferzeugungsanlage an verschiedenen Stellen einsetzbar. Der Wärmetauscher kann hierbei ein Überhitzer, ein Ecomizer oder ein Verbrennungsluftvorwärmer sein.The device described can be used in a steam generating plant at various locations. The heat exchanger may be a superheater, an ecomizer or a combustion air preheater.
Besonders vorteilhaft ist der Einsatz bei einer Vorrichtung mit einer Entstickungseinrichtung, da dadurch auf einfache Art und Weise die Rauchgastemperatur an der Entstickungseinrichtung über eine lange Betriebsdauer der Anlage in einem vorgegebenen Temperaturfenster gehalten werden kann.Particularly advantageous is the use in a device with a denitrification, as this can be kept in a simple manner, the flue gas temperature at the denitrification over a long period of operation of the system in a predetermined temperature window.
Die der Erfindung zugrundeliegende Aufgabe wird auch mit einem Verfahren zum Betreiben eines Wärmetauschers einer Dampferzeugungsanlage gelöst, bei dem der Wärmetauscher über Ventile einstellbar im Gleichstrom und im Gegenstrom betrieben wird. Dadurch können insbesondere Wärmetauscher einer Dampferzeugungsanlage so betrieben werden, dass die benötigten Gase in speziellen Temperaturfenstern gehalten werden und es kann während des Betriebes zwischen Gleich- und Gegenstromfahrweise umgeschaltet werden.The problem underlying the invention is also achieved with a method for operating a heat exchanger of a steam generating plant, in which the heat exchanger is operated via valves adjustable in DC and in countercurrent. As a result, in particular heat exchangers of a steam generating plant can be operated so that the required gases are kept in special temperature windows and it can be switched during operation between DC and Gegenstromfahrweise.
Dieses Verfahren ist auf besonders einfache Art und Weise umsetzbar, wenn die Umstellung über zwei Dreiwegeventile erfolgt. Das vereinfacht die Ventilsteuerung und ermöglicht es, unabhängig von der Steuerung durch den Aufbau der Ventile sicherzustellen, dass in der Dampferzeugungsanlage keine überhitzten Medien in Leitungen geführt werden, die am Leitungseingang und am Leitungsausgang vollständig verschlossen werden können.This method can be implemented in a particularly simple manner if the changeover takes place via two three-way valves. This simplifies valve control and, regardless of control by valve design, ensures that the steam generating system does not contain overheated media in lines that can be completely closed at the line inlet and outlet.
Ausführungsbeispiele zur Vorrichtung und zum Verfahren sind in der Zeichnung dargestellt und werden im Folgenden näher erläutert. Es zeigt:
Figur 1- eine Wärmetauscherschaltung mit vier Ventilen im Gleich-strombetrieb,
- Figur 2
- eine Wärmetauscherschaltung mit vier Ventilen im Gegen-strombetrieb,
Figur 3- eine Wärmetauscherschaltung mit zwei Ventilen im Gleich-strombetrieb,
Figur 4- eine Wärmetauscherschaltung mit zwei Ventilen im Gegen-strombetrieb,
Figur 5- eine Dampferzeugungsanlage mit einem Ecomizer im Gleich-strombetrieb und
Figur 6- eine Dampferzeugungsanlage mit einem Ecomizer im Gegen-strombetrieb.
- FIG. 1
- a heat exchanger circuit with four valves in DC operation,
- FIG. 2
- a heat exchanger circuit with four valves in counter-current operation,
- FIG. 3
- a heat exchanger circuit with two valves in DC operation,
- FIG. 4
- a heat exchanger circuit with two valves in counter-current operation,
- FIG. 5
- a steam generating plant with an Ecomizer in DC operation and
- FIG. 6
- a steam generating plant with an Ecomizer in counter-current operation.
Die in
Ein erstes Bypassventil 11 ist zwischen dem Mediumeinlass und dem ersten Bypass 8 vorgesehen und ein zweites Bypassventil 12 ist zwischen dem zweiten Bypass 9 und dem Mediumauslass 10 vorgesehen. In der Zuleitung 3 ist ein Zuleitungsventil 13 angeordnet und in der Ableitung 6 ist ein Ableitungsventil 14 vorgesehen.A
Das zweite Medium ist im vorliegenden Fall ein Gas, dessen Strömung mit den Pfeilen 15 angedeutet ist. Der Wärmetauscher 2 ist somit in dem in
Hierzu sind das Zuleitungsventil 13 und das Ableitungsventil 14 geöffnet, so dass das Medium 16 im Gleichstrom zum Gas 15 den Wärmetauscher 2 durchfließt. Der erste Bypass 8 ermöglicht dabei über das erste Bypassventil 11 eine Einstellung der Wärmetauscherleistung und der Temperatur des Mediums am Mediumauslass 10. In dieser Schaltung ist das zweite Bypassventil 12 geschlossen, so dass kein Medium durch den zweiten Bypass 9 fließt.For this purpose, the
Bei der in
In den
Über das zweite Dreiwegeventil 18 kann der Wärmetauscher 2 somit vom in
Bei der in
Diese Rauchgase durchströmen zunächst einen Verdampfer 24 und danach drei Überhitzer 25, 26, 27. Schließlich durchströmen die Rauchgase einen Ecomizer 28, um anschließend einer katalytischen Entstickungsanlage (SCR), die in der Darstellung nicht gezeigt ist, zugeführt zu werden.These flue gases first flow through an evaporator 24 and then three
Das als Kühlmedium dienende Wasser 29 wird im Verdampfer 24 verdampft und dampfförmig zunächst über den ersten Überhitzer 25, dann über den dritten Überhitzer 27 und schließlich über den zweiten Überhitzer 26 einer Turbine 30 zugeführt, die einen Generator 31 antreibt. Danach durchfließt es einen Kondensator 32 und wird über eine Pumpe 33 zum Ecomizer 28 gefördert. Dabei ist das erste Dreiwegeventil 34 entsprechend der in
Das Medium strömt somit vom Mediumeinlass 37 über das erste Dreiwegeventil 34 und die Zuleitung 38 zum Ecomizer 28 und vom Ecomizer 28 über die Ableitung 39 und das zweite Zweiwegeventil 35 weiter zur Kesseltrommel 40. Dabei ist eine Steuerung der Mediumtemperatur über den ersten Bypass 41 zwischen dem ersten Bypassventil 34 und der Ableitung 39 möglich.The medium thus flows from the
Die
Die Zuleitung 38 übernimmt bei dieser Schaltung die Funktion eines möglichen Bypasses, um durch das erste Dreiwegeventil 34 gesteuert Wasser am Ecomizer 28 vorbei direkt zum ersten Dreiwegeventil 35 und von dort zur Kesseltrommel 40 zu führen. Das als Kühlmedium dienende Wasser 29 wird im Verdampfer 24 verdampft und dampfförmig zunächst über den ersten Überhitzer 25, dann über den zweiten Überhitzer 26 und schließlich über den dritten Überhitzer 27 der Turbine 30 zugeführt, die den Generator 31 antreibt. Dies ermöglicht es auch bei dieser Schaltung ohne zusätzlichen Rohr- oder Ventilaufwand auf einfache Art und Weise eine Regelung der Mediumtemperaturen auf der Gas- und der Wasserseite vorzusehen. Außerdem kann während des Betriebes von Gleichstrom- auf Gegenstromfahrweise und zurück umgeschaltet werden.The
Claims (15)
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PL11006156T PL2442061T3 (en) | 2010-10-12 | 2011-07-27 | Method for cooling combustion gases in a heat exchanger of a steam generation plant |
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DE102010048065A DE102010048065A1 (en) | 2010-10-12 | 2010-10-12 | Device with a heat exchanger and method for operating a heat exchanger of a steam generating plant |
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EP2442061A2 true EP2442061A2 (en) | 2012-04-18 |
EP2442061A3 EP2442061A3 (en) | 2015-03-04 |
EP2442061B1 EP2442061B1 (en) | 2017-09-27 |
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US (1) | US9677831B2 (en) |
EP (1) | EP2442061B1 (en) |
JP (1) | JP5971508B2 (en) |
BR (1) | BRPI1106277B1 (en) |
CA (1) | CA2754465C (en) |
DE (1) | DE102010048065A1 (en) |
DK (1) | DK2442061T3 (en) |
ES (1) | ES2653670T3 (en) |
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JP7392687B2 (en) | 2021-06-10 | 2023-12-06 | Jfeスチール株式会社 | Boiler fuel preheating device and preheating method |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE219629C (en) | ||||
DE445460C (en) * | 1925-07-12 | 1927-06-11 | Otto Happel | Device to prevent water excretion from the cooling air of electrical power generators when they are cooled back by cooling water |
AT219629B (en) * | 1959-12-31 | 1962-02-12 | Licencia Talalmanyokat | Control procedure for changing the heat output of heat exchangers |
US3942482A (en) * | 1974-10-09 | 1976-03-09 | Foster Wheeler Energy Corporation | Bayonet tube steam generator |
US4007774A (en) * | 1975-09-23 | 1977-02-15 | Uop Inc. | Heat exchange apparatus and method of controlling fouling therein |
JPS5272949A (en) * | 1975-12-12 | 1977-06-18 | Toray Ind Inc | Temperature control system for boiler exhausting gas |
GB2018967B (en) * | 1978-03-28 | 1982-08-18 | Osaka Gas Co Ltd | Apparatus and process for vaporizing liquefied natural gas |
CH640041A5 (en) * | 1979-08-22 | 1983-12-15 | Sulzer Ag | Conditioning circuit. |
US4353207A (en) * | 1980-08-20 | 1982-10-12 | Westinghouse Electric Corp. | Apparatus for removing NOx and for providing better plant efficiency in simple cycle combustion turbine plants |
DE3805791A1 (en) * | 1988-02-24 | 1989-08-31 | Kraftanlagen Ag | METHOD AND PLANT FOR NICKELING THE EXHAUST GAS FROM COMBUSTION PLANTS |
US5159975A (en) * | 1992-02-07 | 1992-11-03 | Murphy Guy R | Unit to enhance heat transfer through heat exchanger tube |
DE4303613C2 (en) * | 1993-02-09 | 1998-12-17 | Steinmueller Gmbh L & C | Process for generating steam in a once-through steam generator |
JP2000304231A (en) * | 1999-04-19 | 2000-11-02 | Ebara Corp | Heat recovery apparatus from exhaust gas and method of heat recovery |
DE19926326A1 (en) * | 1999-06-09 | 2000-12-14 | Abb Alstom Power Ch Ag | Process and plant for heating a liquid medium |
US6936112B2 (en) * | 2002-11-26 | 2005-08-30 | Refined Technologies, Inc. | Heat exchanger cleaning process |
DE102005017974A1 (en) * | 2005-04-19 | 2006-11-02 | Audi Ag | Switching radiator for air conditioning system of motor vehicle, has two cooling channels that are provided with two outlet controllers, where flow of coolant is switchable between U-flow and I-flow under utilization of backflow connection |
JP4718333B2 (en) * | 2006-01-10 | 2011-07-06 | バブコック日立株式会社 | Once-through exhaust heat recovery boiler |
JP4733612B2 (en) * | 2006-10-19 | 2011-07-27 | 新日鉄エンジニアリング株式会社 | Boiler superheater for waste treatment equipment |
JP2010002079A (en) * | 2008-06-18 | 2010-01-07 | Mitsubishi Heavy Ind Ltd | Boiler and control method of boiler |
DE102008048405B3 (en) * | 2008-09-23 | 2010-04-22 | Alstom Technology Ltd. | Tube bundle heat exchanger for the regulation of a wide power range |
EP2253807A1 (en) * | 2008-10-29 | 2010-11-24 | Vítkovice Power Engineering a.s. | Gas turbine cycle or combined steam-gas cycle for production of power from solid fuels and waste heat |
-
2010
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2011
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- 2011-08-15 US US13/136,942 patent/US9677831B2/en active Active
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014118047A1 (en) * | 2013-02-01 | 2014-08-07 | Tetra Laval Holdings & Finance S.A. | A valve arrangement for a heat treatment apparatus |
CN104969026A (en) * | 2013-02-01 | 2015-10-07 | 利乐拉瓦尔集团及财务有限公司 | A valve arrangement for a heat treatment apparatus |
US10234216B2 (en) | 2013-02-01 | 2019-03-19 | Tetra Laval Holdings & Finance S.A. | Valve arrangement for a heat treatment apparatus |
EP4328519A1 (en) * | 2022-08-25 | 2024-02-28 | ERK Eckrohrkessel GmbH | Method and device for producing geothermal heat and method for producing electrical energy |
EP4328520A1 (en) * | 2022-08-25 | 2024-02-28 | ERK Eckrohrkessel GmbH | Method and device for using geothermal heat |
Also Published As
Publication number | Publication date |
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EP2442061B1 (en) | 2017-09-27 |
DK2442061T3 (en) | 2017-12-04 |
US20120085517A1 (en) | 2012-04-12 |
NO2442061T3 (en) | 2018-02-24 |
US9677831B2 (en) | 2017-06-13 |
CA2754465C (en) | 2018-07-24 |
JP2012083095A (en) | 2012-04-26 |
BRPI1106277A2 (en) | 2016-01-19 |
DE102010048065A1 (en) | 2012-04-12 |
JP5971508B2 (en) | 2016-08-17 |
PL2442061T3 (en) | 2018-03-30 |
PT2442061T (en) | 2017-11-27 |
ES2653670T3 (en) | 2018-02-08 |
EP2442061A3 (en) | 2015-03-04 |
BRPI1106277B1 (en) | 2020-04-22 |
CA2754465A1 (en) | 2012-04-12 |
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