DE102004008799A1 - Process for controlling the waste gas temperature in a boiler arrangement comprises determining the temperatures of the waste gas and heat transfer medium in a heat exchanger, and adjusting the temperature of the heat transfer medium - Google Patents
Process for controlling the waste gas temperature in a boiler arrangement comprises determining the temperatures of the waste gas and heat transfer medium in a heat exchanger, and adjusting the temperature of the heat transfer medium Download PDFInfo
- Publication number
- DE102004008799A1 DE102004008799A1 DE102004008799A DE102004008799A DE102004008799A1 DE 102004008799 A1 DE102004008799 A1 DE 102004008799A1 DE 102004008799 A DE102004008799 A DE 102004008799A DE 102004008799 A DE102004008799 A DE 102004008799A DE 102004008799 A1 DE102004008799 A1 DE 102004008799A1
- Authority
- DE
- Germany
- Prior art keywords
- heat transfer
- temperature
- transfer medium
- waste gas
- exhaust gas
- 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.)
- Ceased
Links
Classifications
-
- 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
- F22D1/12—Control devices, e.g. for regulating steam temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/80—Quenching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Regelung der Abgastemperatur in Kesselanlagen in einer vorgegebenen Temperaturdifferenz vorzugsweise in Anlagen mit unterschiedlichem und wechselndem Wärmeübertragungsverhalten.The The invention relates to a method for controlling the exhaust gas temperature in boiler systems in a predetermined temperature difference preferably in plants with different and changing heat transfer behavior.
Es ist bekannt, die Eintrittstemperatur der Medien in Kesselanlagen anzuheben. Die bekannten Verfahren sind jedoch mit einem hohen Grad an Aufwendungen belastet, um die Medien in den Kesseltrommeln vorzuwärmen. Dazu müssen diese Trommeln größer ausgelegt werden und erfordern einen höheren Aufwand an Material und Arbeitszeit. Ein weiterer Nachteil des bekannten Standes der Technik ist darin zu sehen, dass die Heizflächen der jeweiligen Wärmetauscher unverhältnismäßig groß dimensioniert sein müssen. Eine weitere konstruktive Ausbildung von Kesselanlagen ist darin zu sehen, dass Bypasskanäle initiiert werden Eine derartige Konstruktion bedingt ein hohes Bauvolumen der Kessel und eine aufwendige Verfahrensführung des Kesselregimes, insbesondere dann, wenn wechselnde Brennstoffe im Kessel zur Verbrennung gebracht werden und damit die gebildeten Rauchgase unterschiedliche Zustände in ihrer Temperatur, in der Zusammensetzung und ihrer Affinität mit den Kesselwänden aufweisen. Das Herbeiführen derartiger nachteiliger Folgen für das Kesselregime ist durch bisher bekannte Verfahren und Einrichtungen nicht zu vermeiden.It is known, the inlet temperature of the media in boiler systems to raise. However, the known methods are at a high degree charged to expenses to preheat the media in the boiler drums. To have to designed these drums bigger become and require a higher one Expenditure of material and working hours. Another disadvantage of the known The prior art is to be seen in that the heating surfaces of the respective heat exchangers disproportionately large dimensions have to be. Another structural design of boiler systems is therein to see that bypass channels Such a construction requires a high volume of construction the boiler and a complex process control of the boiler regime, in particular when changing fuels in the boiler are incinerated and thus the flue gases formed have different states in theirs Temperature, composition and their affinity with the boiler walls exhibit. The induction such adverse consequences for the boiler regime is by previously known methods and devices can not be avoided.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Regelung der Abgastemperatur in Kesselanlagen in einer vorgegebenen Temperaturdifferenz, vorzugsweise in Anlagen mit unterschiedlichem und wechselndem Wärmeübertragungsverhalten zu schaffen, mit dem ein anpassungsfähiges Regime der Kesselsteuerung bei wechselnden Kessellasten sowie Rauchgasverschmutzungen des Kessels mit geringen Heizflächengrößen erhalten wird.Of the Invention is based on the object, a method of control the exhaust gas temperature in boiler plants in a given temperature difference, preferably in plants with different and changing heat transfer behavior to create, with the an adaptive regime of boiler control with changing boiler loads as well as flue gas contamination of the boiler obtained with small heating surface sizes becomes.
Die Erfindung löst die Aufgabe durch ein gattungsgemäßes Verfahren, mit dem in einer vorbestimmten Stufe eines Wärmeüberträgers die Temperatur des Abgases sowie des Wärmeübertragungsmediums ermittelt werden und davon ableitend die Temperatur des Wärmeübertragungsmediums, in einer oder mehreren vorgeschalteten und/oder parallelen Wärmeübergangsstufen, zur Regelung der Abgastemperatur eingestellt wird. Die Erfindung ist dadurch ausgebildet, dass das Wärmeübertragungsmedium in größerer Menge als im Normalbetrieb gefördert durch die angesteuerten Wärmeübertragungsflächen geleitet und die nicht erforderliche Menge einer andersartigen Nutzung zugeführt wird. Eine weitere Ausformung der Erfindung erfolgt dadurch, dass im Verlauf des Verfahrens die Menge des Wärmeübertragungsmediums verändert und die Temperatur des Mediums gemessen wird.The Invention solves the task by a generic method with which in a predetermined stage of a heat exchanger the Temperature of the exhaust gas and the heat transfer medium determined and deriving from this the temperature of the heat transfer medium, in one or more upstream and / or parallel heat transfer stages, is set to control the exhaust gas temperature. The invention is formed by the heat transfer medium in a larger amount as promoted in normal operation passed through the controlled heat transfer surfaces and the unnecessary amount of a different use is supplied. A Further embodiment of the invention takes place in that in the course the method, the amount of heat transfer medium changed and the temperature of the medium is measured.
Dazu wird erfindungsgemäß mindestens eine Wärmeübertragungsfläche über die Regelungseinrichtung im Kesselregime angesteuert und durchströmt. Es ist sinnvoll nach der Erfindung, dass mindestens eine Wärmeübertragungsfläche teilweise durchströmt wird oder in Varianz der erfindungsgemäßen Lösung vollständig durchströmt werden kann. Es ist eine vorteilhafte Ausführungsart der Erfindung, dass bei Erreichen einer vorbestimmten Abgastemperatur eine Reinigung der Heizflächen eingeleitet wird, die in vorteilhafter Ausübung der erfindungsgemäßen Lösung mittels mechanischer Einrichtungen erfolgen oder auch in sinnvoller Weise mittels hydromechanischer Einrichtung durchgeführt werden kann Es erfüllt die erfindungsgemäße Lösung weiterhin, wenn die Reinigung der Heizflächen mittels mechanischer und hydromechanischer Mittel vorgenommen wird, wobei den Fluiden der hydromechanischen Mittel in Ausbildung der Erfindung Lösungsmittel zur Erhöhung ihrer Reinigungswirkung zugeführt werden können. Ausgestaltet ist die erfindungsgemäße Lösung weiterhin, wenn die verwendeten Fluide flüssig oder gasförmig ausgebildet sind und in der hydromechanischen Einrichtung so verwendet werden, dass den Fluiden flüssige oder auch gasförmige Lösungsmittel zugeführt werden können.To is at least one according to the invention Heat transfer surface over the Controlling device controlled in the boiler regime and flows through. It is makes sense according to the invention that at least one heat transfer surface is partially flowed through or completely flowed through in variance of the solution according to the invention can. It is an advantageous embodiment of the invention that upon reaching a predetermined exhaust gas temperature, a cleaning the heating surfaces is introduced, in the advantageous exercise of the solution according to the invention by means of mechanical means or in a meaningful way can be performed by means of hydromechanical equipment inventive solution further, if the cleaning of the heating surfaces made by mechanical and hydromechanical means, wherein the fluids of the hydromechanical agent in training the Invention Solvent to increase fed to their cleaning effect can be. The solution according to the invention is also designed, if the used Fluids liquid or gaseous are formed and used in the hydromechanical device so be that fluids fluid or gaseous solvent supplied can be.
Durch die Anwendung der erfindungsgemäßen Lösung ist es vorteilhaft möglich, bei einer angepaßten wirtschaftlichen Größe der Heizflächen und Einhaltung einer vorgegebenen Temperaturdifferenz die Schwankungen der Kessellasten sowie des durch die unterschiedlich belasteten Rauchgase wechselnden Verschmutzungsgrades unkompliziert auszugleichen Die Erfindung soll anhand eines Ausführungsbeispiels näher erläutert werden.By the application of the solution according to the invention is it is advantageously possible in a customized economic size of the heating surfaces and compliance a given temperature difference, the fluctuations of the boiler loads as well as the changing by the differently loaded flue gases Easily compensate for contamination level The invention is intended based on an embodiment be explained in more detail.
Die dazugehörige Zeichnung zeigt eine Anordnung zur Regelung des Kesselregimes mit einer Erfassung der Rauchgastemperaturen.The associated Drawing shows an arrangement for regulating the boiler regime with a detection of the flue gas temperatures.
Die erfindungsgemäße Anordnung arbeitet mit folgenden Regelungsvorgängen:
- – Kessel geht nach Revision in Betrieb; Heizflächen sauber
- – Speisepumpe
(
1 ) fährt in den geforderten Lastbereich hoch - – Regler
(temp
75 ) meldet, Temperatur des Rauchgases zu gering - – Dreiwegeventil
(
79 ) öffnet Speisewasservorwärmer (Kühler72 ) vollständig - – Dreiwegeventil
(
73 ) schließt Steuerleitung zu Eco3 bis der Regler (temp84 ) meldet, dass vorgesehene Temperatur erreicht ist - – Temperatur steigt weiter
- – Dreiwegeventil
(
73 ) öffnet Steuerleitung nach Signal von Regler - – Steuerleitung
ist voll geöffnet,
Temperatur steigt weiter, Dreiwegeventil (
79 ) fährt Speisewasservorwärmer (Kühler72 ) nach Vorgabe von Regler (temp75 ) weiter zu, Medientemperatur sinkt, Regler (temp84 ) regelt nach - – Regler
(temp
84 ) und Regler (temp75 ) melden Temperatur des Rauchgases zu hoch, es erfolgt eine Abreinigung der Heizflächen, ausführungsgemäß mit mechanischen Vorrichtungen - – der Regelungszyklus beginnt von vorn
- – wenn
Regler (temp
84 ) und Regler (temp75 ) melden, dass die Temperatur des Rauchgases zu hoch ist und trotz Abreinigung der Heizflächen deren Temperatur weiter steigt, warnt ein akustisches bzw. optisches Warnsignal die Kesselwarte
- - boiler goes into operation after revision; Heating surfaces clean
- - feed pump (
1 ) moves up into the required load range - - controller (temp
75 ) reports, temperature of the flue gas too low - - three-way valve (
79 ) opens feed water heater (radiator72 ) Completely - - three-way valve (
73 ) joins control line to Eco3 until the controller (temp84 ) reports that the intended temperature has been reached - - Temperature continues to rise
- - three-way valve (
73 ) opens control line to signal from controller - - Control line is fully open, temperature rises Next, three-way valve (
79 ) runs feedwater heater (radiator72 ) according to controller (temp75 ) continues to rise, media temperature drops, controller (temp84 ) regulates - - controller (temp
84 ) and controller (temp75 ) Report the temperature of the flue gas too high, there is a cleaning of the heating surfaces, according to the design with mechanical devices - - The control cycle starts from the beginning
- - if controller (temp
84 ) and controller (temp75 ) Report that the temperature of the flue gas is too high and despite the cleaning of the heating surfaces whose temperature continues to rise, an audible or visual warning signal warns the boiler room
- 11
- SpeisewasserzuflußregelungSpeisewasserzuflußregelung
- 2, 3, 42, 3, 4
- Economisereconomizer
- 7272
- Kühlercooler
- 8, 75, 858th, 75, 85
- Reglerregulator
- 73, 79, 8073 79, 80
- DreiwegeventilThree-way valve
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004008799A DE102004008799A1 (en) | 2004-02-20 | 2004-02-20 | Process for controlling the waste gas temperature in a boiler arrangement comprises determining the temperatures of the waste gas and heat transfer medium in a heat exchanger, and adjusting the temperature of the heat transfer medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004008799A DE102004008799A1 (en) | 2004-02-20 | 2004-02-20 | Process for controlling the waste gas temperature in a boiler arrangement comprises determining the temperatures of the waste gas and heat transfer medium in a heat exchanger, and adjusting the temperature of the heat transfer medium |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004008799A1 true DE102004008799A1 (en) | 2005-09-08 |
Family
ID=34832974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004008799A Ceased DE102004008799A1 (en) | 2004-02-20 | 2004-02-20 | Process for controlling the waste gas temperature in a boiler arrangement comprises determining the temperatures of the waste gas and heat transfer medium in a heat exchanger, and adjusting the temperature of the heat transfer medium |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004008799A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102937295A (en) * | 2012-11-20 | 2013-02-20 | 上海锅炉厂有限公司 | Boiler economizer arrangement form suitable for denitration device negative whole process load operation |
CN106123001A (en) * | 2016-06-24 | 2016-11-16 | 福建龙净环保股份有限公司 | A kind of smoke waste heat utilization system and method |
CN114110736A (en) * | 2021-11-25 | 2022-03-01 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
-
2004
- 2004-02-20 DE DE102004008799A patent/DE102004008799A1/en not_active Ceased
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102937295A (en) * | 2012-11-20 | 2013-02-20 | 上海锅炉厂有限公司 | Boiler economizer arrangement form suitable for denitration device negative whole process load operation |
CN102937295B (en) * | 2012-11-20 | 2015-02-18 | 上海锅炉厂有限公司 | Boiler economizer arrangement form suitable for denitration device negative whole process load operation |
CN106123001A (en) * | 2016-06-24 | 2016-11-16 | 福建龙净环保股份有限公司 | A kind of smoke waste heat utilization system and method |
CN114110736A (en) * | 2021-11-25 | 2022-03-01 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
CN114110736B (en) * | 2021-11-25 | 2023-02-28 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
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