DE102011013352A1 - Geothermal source for supporting and enhancement of effectiveness of steam generators connected with steam turbines by utilization of thermal energy, has thermal energy that is upstream to steam generator - Google Patents
Geothermal source for supporting and enhancement of effectiveness of steam generators connected with steam turbines by utilization of thermal energy, has thermal energy that is upstream to steam generator Download PDFInfo
- Publication number
- DE102011013352A1 DE102011013352A1 DE102011013352A DE102011013352A DE102011013352A1 DE 102011013352 A1 DE102011013352 A1 DE 102011013352A1 DE 102011013352 A DE102011013352 A DE 102011013352A DE 102011013352 A DE102011013352 A DE 102011013352A DE 102011013352 A1 DE102011013352 A1 DE 102011013352A1
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- Germany
- Prior art keywords
- steam
- geothermal
- heat energy
- thermal energy
- geothermal source
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- 238000011144 upstream manufacturing Methods 0.000 title claims abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007792 gaseous phase Substances 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000013505 freshwater Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G4/00—Devices for producing mechanical power from geothermal energy
- F03G4/074—Safety arrangements
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Nutzung von Wärmeenergie aus geothermischen Quellen zur Unterstützung und Steigerung der Effektivität von vorrangig mit Dampfturbinen verbundenen herkömmlichen Dampferzeugern, denen die geothermischen Quellen mit ihrer verfügbaren Wärmeenergie in Form von über den Enthalpiewechsel von Wasser in seiner gasförmigen Phase (Wasserdampf) als erste Stufe dem konventionellen Dampferzeuger direkt oder indirekt vorgeschaltet werden.Use of heat energy from geothermal sources to support and increase the effectiveness of conventional steam generators primarily associated with steam turbines, which direct the geothermal sources with their available heat energy in the form of the enthalpy of water in its gaseous phase (water vapor) as the first stage of the conventional steam generator or be connected upstream.
Description
Die Erfindung hat eine Nutzung von Wärmeenergie aus geothermischen Quellen zum Inhalt, die zur Unterstützung und Steigerung der Effektivität von herkömmlichen Dampferzeugern für Dampfturbinen zur Erzeugung von elektrischer Energie oder anderen technologischen Prozessen dient.The invention relates to a use of heat energy from geothermal sources, which serves to support and increase the effectiveness of conventional steam generators for steam turbines for the production of electrical energy or other technological processes.
Die aus geothermischen Quellen gewonnene Wärmeenergie hat gegenwärtig ein Temperaturniveau von 140–200 Grad Celsius. Angestrebt werden Tiefbohrungen in geologisch aktiven Zonen, bei denen höhere Temperaturen bis 400 Grad Celsius erwartet werden. Träger der Wärmeenergie ist in der Regel vorrangig Wasser, welches bei den oben angegebenen Temperaturen als Dampf aus der geothermischen Quelle tritt. Die bisher und sicher auch in vielen Bereichen bei nicht geologisch aktiven Zonen zu erwartenden Temperaturen werden das oben benannte Niveau von 200 Grad Celsius nicht überschreiten.The thermal energy gained from geothermal sources currently has a temperature level of 140-200 degrees Celsius. Deep drilling in geologically active zones, where higher temperatures up to 400 degrees Celsius are expected, is the target. The carrier of the thermal energy is usually primarily water, which occurs at the temperatures specified above as steam from the geothermal source. The temperatures expected to date and certainly also in many areas for non-geologically active zones will not exceed the above-mentioned level of 200 degrees Celsius.
Bisher wurde über Wärmetauscher und die Verwendung von niedrig siedenden Fluiden im Sekundärkreis des Wärmetauschers bei diesen Temperaturen ein erhöhter Dampfdruck erzeugt, der für den Betrieb einer Dampfturbine mit eingeschränkter elektrischer Leistung ausreichte.Hitherto, heat exchangers and the use of low-boiling fluids in the secondary circuit of the heat exchanger at these temperatures, an increased vapor pressure was generated, which was sufficient for the operation of a steam turbine with limited electrical power.
Zur Steigerung des Wirkungsgrades von Dampferzeugern bei Kombinationskraftwerken wird solarthermische Energie über Wärmetauscher in den Speisewasservorwärmer dem konventionellen Dampferzeuger übertragen. In den deutschen Patentschriften
Das Problem bei solarthermischer Energiegewinnung besteht in der Abhängigkeit der Sonnenstrahlung und steht damit nicht kontinuierlich zur Verfügung. Über zusätzliche solarthermische Energiespeicher wird versucht diesen Mangel zu beheben.The problem with solar thermal energy production is the dependence of solar radiation and is thus not continuously available. About additional solar thermal energy storage is trying to remedy this deficiency.
Auf der Grundlage dieses Standes der Technik bestand die Aufgabe der Erfindung darin, Lösungen für die Nutzung der aus geothermischen Quellen gewonnenen kontinuierlich verfügbaren Wärmeenergie zu erarbeiten, die als Vorstufe im Sinne der Speisewasservorwärmung vor dem konventionellen Dampferzeuger als erste Stufe der Dampferzeugung geeignet sind, um so eine Leistungssteigerung des konventionellen Dampferzeugers und der Dampfturbine für die elektrische Stromerzeugung zu erreichen.On the basis of this prior art, the object of the invention was to develop solutions for the use of the continuously available heat energy obtained from geothermal sources, which are suitable as a precursor in the sense of feedwater pre-heating before the conventional steam generator as the first stage of steam generation, so To achieve an increase in performance of the conventional steam generator and the steam turbine for electric power generation.
Für die Leistungssteigerung dieser Kraftwerkslösung bedarf es keiner zusätzlichen Energie für den konventionellen Dampferzeuger, und es wird so der CO2 Ausstoß pro erzeugten KWh eines so ausgerüsteten Kraftwerkes gesenkt.Increasing the performance of this power plant solution does not require any additional energy for the conventional steam generator, thus reducing CO 2 emissions per kWh produced in a power station equipped in this way.
Ist die aus der geothermischen Quelle gewonnene Wärmeenergie hinsichtlich Dampfvolumen, Druck und Temperatur zur Versorgung des konventionellen Dampferzeugers ausreichend, so ist kein Rücklauf des kondensierten Dampfes als heißes Wasser nach dem Austritt der Dampfturbine mehr erforderlich und die Wärmeenergie kann für weitere wärmetechnische Nutzung verwendet werden. Der geothermischen Quelle muss dann frisches Wasser in ausreichendem Umfang zu geführt werden.If the thermal energy obtained from the geothermal source is sufficient in terms of steam volume, pressure and temperature to supply the conventional steam generator, no return of the condensed steam is required as hot water after the exit of the steam turbine and the heat energy can be used for further heat technology use. The geothermal source must then be supplied with fresh water to a sufficient extent.
Ist die aus der geothermischen Quelle gewonnene Wärmeenergie hinsichtlich Dampfvolumen, Druck und Temperatur zur Versorgung des konventionellen Dampferzeugers nicht ausreichend, so muss über einen Wärmetauscher im Sinne einer Speisewasservorwärmung die geothermische Wärmeenergie in den Kreislauf der Dampferzeugung des konventionellen Kraftwerkes eingekoppelt werden. Unter diesen Bedingungen ist für einen guten Wirkungsgrad dieser Kraftwerkslösung die Restwärme aus dem Kreislauf des Kraftwerkes und der geothermischen Quelle zu Heizzwecken und anderen wärmetechnischen Lösungen zu nutzen.If the heat energy obtained from the geothermal source is insufficient with regard to steam volume, pressure and temperature to supply the conventional steam generator, then the geothermal heat energy must be coupled into the cycle of steam generation of the conventional power plant via a heat exchanger in the sense of feedwater preheating. Under these conditions, for a good efficiency of this power plant solution, the residual heat from the circuit of the power plant and the geothermal source for heating purposes and other thermal solutions to use.
Mit dem Einsatz eines Wärmetauschers im vorliegenden Fall kann das kondensierte und abgekühlte Wasser in einem geschlossenen Kreislauf der geothermischen Quelle wieder zugeführt werden.With the use of a heat exchanger in the present case, the condensed and cooled water can be recycled in a closed loop geothermal source.
In den oben angeführten geothermischen Quellen mit Temperaturen bei 400 Grad Celsius und höher ergeben sich aus den vorgenannten Lösungen weitere Möglichkeiten der Nutzung dieser geothermischen Wärmenergie. Diese betreffen den ausschließlichen Betrieb des Kraftwerkes mit der Wärmeenergie der geothermischen Quelle, einem Parallelbetrieb der konventionellen Dampferzeugung mit der geothermischen Dampferzeugung sowie die bereits beschriebene erste Stufe der Dampferzeugung mit konventionellen Dampferzeugern, wenn der Druck oder das Volumen des Dampfes aus der geothermischen Quelle nicht ausreicht.In the above-mentioned geothermal sources with temperatures of 400 degrees Celsius and higher arise from the aforementioned solutions, other ways of using this geothermal heat energy. These relate to the exclusive operation of the power plant with the heat energy of the geothermal source, a parallel operation of conventional steam generation with geothermal steam generation and the first stage of steam generation with conventional steam generators already described, if the pressure or the volume of steam from the geothermal source is insufficient.
Ein Vorteil der vorgeschlagenen Lösungen besteht in der von Witterungs-, klimatischen, Transport- und Entsorgungsbedingungen einer unabhängigen, ständig verfügbaren Wärmeenergiequelle als erste Stufe der Dampferzeugung.An advantage of the proposed solutions is the weather, climatic, transport and disposal conditions of an independent, constantly available thermal energy source as the first stage of steam generation.
Mit dieser technischen Lösung können auch größere Kraftwerkseinheiten besonders auf Erdgasbasis mit hohem Wirkungsgrad betrieben werden.With this technical solution even larger power plant units can be operated especially on natural gas with high efficiency.
Bestehen Dampfturbineneinheiten aus Hoch- und Niederdruckeinheiten, kann die Niederdruckeinheit bei geringer elektrischer Last auch ausschließlich mit Dampf aus der geothermischen Quelle betrieben werden und so Gas oder andere fossile Energieträger gespart werden. If steam turbine units consist of high- and low-pressure units, the low-pressure unit can also be operated exclusively with steam from the geothermal source at low electrical load, thus saving gas or other fossil energy sources.
Ein weiterer Vorteil besteht in der Verwendung verfügbarer Kraftwerkskomponenten.Another advantage is the use of available power plant components.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 4126037 A1 [0004] DE 4126037 A1 [0004]
- DE 196274425 A1 [0004] DE 196274425 A1 [0004]
- DE 102008051384 B3 [0004] DE 102008051384 B3 [0004]
- DE 202008002599 U1 [0004] DE 202008002599 U1 [0004]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011013352A DE102011013352A1 (en) | 2011-03-08 | 2011-03-08 | Geothermal source for supporting and enhancement of effectiveness of steam generators connected with steam turbines by utilization of thermal energy, has thermal energy that is upstream to steam generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011013352A DE102011013352A1 (en) | 2011-03-08 | 2011-03-08 | Geothermal source for supporting and enhancement of effectiveness of steam generators connected with steam turbines by utilization of thermal energy, has thermal energy that is upstream to steam generator |
Publications (1)
Publication Number | Publication Date |
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DE102011013352A1 true DE102011013352A1 (en) | 2012-09-13 |
Family
ID=46705356
Family Applications (1)
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DE102011013352A Withdrawn DE102011013352A1 (en) | 2011-03-08 | 2011-03-08 | Geothermal source for supporting and enhancement of effectiveness of steam generators connected with steam turbines by utilization of thermal energy, has thermal energy that is upstream to steam generator |
Country Status (1)
Country | Link |
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DE (1) | DE102011013352A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126037A1 (en) | 1991-08-06 | 1993-02-11 | Siemens Ag | GAS AND STEAM TURBINE POWER PLANT WITH A SOLAR HEATED STEAM GENERATOR |
DE19627425A1 (en) | 1996-07-08 | 1998-01-15 | Asea Brown Boveri | Method of operating hybrid solar powered combined plant |
DE202008002599U1 (en) | 2008-02-25 | 2008-04-24 | Flagsol Gmbh | Solar thermal hybrid power plant |
DE102008051384B3 (en) | 2008-10-11 | 2010-02-11 | Technische Universität Dresden | Solar-hybrid operated gas and steam power plant has solar plant, gas turbine system and steam turbine system, where heat-carrier circuit is provided for transmitting solar heat |
-
2011
- 2011-03-08 DE DE102011013352A patent/DE102011013352A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126037A1 (en) | 1991-08-06 | 1993-02-11 | Siemens Ag | GAS AND STEAM TURBINE POWER PLANT WITH A SOLAR HEATED STEAM GENERATOR |
DE19627425A1 (en) | 1996-07-08 | 1998-01-15 | Asea Brown Boveri | Method of operating hybrid solar powered combined plant |
DE202008002599U1 (en) | 2008-02-25 | 2008-04-24 | Flagsol Gmbh | Solar thermal hybrid power plant |
DE102008051384B3 (en) | 2008-10-11 | 2010-02-11 | Technische Universität Dresden | Solar-hybrid operated gas and steam power plant has solar plant, gas turbine system and steam turbine system, where heat-carrier circuit is provided for transmitting solar heat |
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Legal Events
Date | Code | Title | Description |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20131001 |