Description: Dieses Vorhaben ist Teil des Verbundvorhabens ADECOS, welches im Rahmen des COORETEC Programms des BMWi durchgeführt wird. Darin wird für den Brennstoff Steinkohle der Oxyfuel-Kraftwerksprozess als eine CCS-Technologieoption zur Reduzierung der CO2 Emissionen auf seine Realisierbarkeit und Wirtschaftlichkeit hin überprüft. Es wird eine breit angelegte Untersuchung des Gesamtprozesses mit vertieften Analysen relevanter Einzelaspekte einschließlich des Rückflusses der Ergebnisse in die Gesamtprozessanalyse vorgenommen. Die Forschungsaktivitäten werden in vier Teilprojekte (TP) unterteilt: TP 1: CO2-Abtrennung, Phasengleichgewichtsuntersuchung von CO2 in Anwesenheit von N2, O2 und Ar. TP 2: Experimentelle feuerungstechnische Untersuchungen. TP 3: Optimierung des Dampferzeugers. TP 4: Geschlossene Optimierung des Gesamtprozesses. Wenn nachgewiesen werden kann, dass der Prozess wirtschaftlich und technologisch sinnvoll ist, werden die Ergebnisse für Auslegung und Bau einer Demonstrationsanlage verwendet, um auf deren Basis in ca. 15 Jahren eine erste großtechnische Anlage nach diesem Prinzip zu bauen.
Types:
SupportProgram
Origins:
/Bund/UBA/UFORDAT
Tags:
Brennstoff
?
Oxyfuel-Verfahren
?
Sauerstoff
?
Steinkohle
?
Steinkohlekraftwerk
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Stickstoff
?
Anlagenoptimierung
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Verbrennungstechnik
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Kohlendioxid
?
Schadstoffemission
?
Verbrennung
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Verfahrensoptimierung
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CO2-Minderung
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Energiegewinnung
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Energieeinsparung
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Energietechnik
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Großanlage
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Abgasemission
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Verfahrenstechnik
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Wirkungsanalyse
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Wirtschaftlichkeit
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Industrieanlage
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Kraftwerk
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Dampfkessel
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Emissionsminderung
?
Pilotprojekt
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Treibhausgas
?
CCS-Technologie
?
Brennstoffeinsparung
?
Anlagentechnik
?
CO2-Abscheidung und -Speicherung
?
Drop Tube Combustor
?
Eignungsfeststellung
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Fossil Fuelled Power Station
?
Hard Coal Combustion
?
Simulation of the Overall Process;
?
CO2 Separation
?
CO2-Abscheidung
?
Region:
Hamburg
Bounding boxes:
9.99302° .. 9.99302° x 53.55073° .. 53.55073°
License: cc-by-nc-nd/4.0
Language: Deutsch
Organisations
Time ranges:
2004-10-01 - 2006-08-31
Alternatives
-
Language: Englisch/English
Title: Oxyfuel Process for Hard Coal with CO2 Removal
Description: This research project is part of the Joint Project ADECOS I&II (Weiterentwicklung des Oxyfuel-Prozesses für Braun- und Steinkohle mit CO2-Abscheidung = Further Development of the Oxyfuel-Process for Lignite and Hard Coal with CO2Removal), performed under the auspices of the COORETEC Programme.Apart from reducing the CO2 emissions by increasing efficiency there is at present intensive discussion on achieving the same goal through separating the CO2from the exhaust and storing it. In coal-fuelled steam power plants it is possible to use an end of pipe-solution by washing the CO2 out of the unpressurised exhaust gas by means of liquid Monoethanolamine (MEA). For regenerating the MEA solution heat from the LP-stages of the Turbine has to be used. This reduces the overall efficiency of the power station by approximatels 10-14 percentage points. Due to this high loss and the consecutive increased consumption in resources, this process is for the time being considered only in EOR applications seeking to increase recovery from oil reserves.By comparison it is preferable to use the so-called Oxyfuel-Process and this was the reason that this process was included in the Framework of the COORETEC Programme. The Oxyfuel process is based on the classical coal steam power plant. Here coal combustion takes place in the boiler not with air but in an atmosphere containing Oxygen, supplied by an Air Separation Unit (ASU), and recirculated exhaust gas. The main components of the exhaust gas are CO2 and Water. The CO2 is now so highly concentrated that it can be separated and liquefied with a relatively small energy penalty. The volumetric concentration of CO2in the dry exhaust increases from 15 Prozent, in the usual steam power plant, to approximately 90 Prozent in the Oxyfuel power plant.The process consists in principle of three main components: the ASU, the Steam Power Plant and the Exhaust Gas Liquefaction Plant. The ASU, which is based on the established cryogenic Linde principle, delivers large quantities of oxygen with a purity above 95Prozent at ambient temperature and pressure conditions. The remaining impurities consist essentially of Argon. The Oxygen stream is mixed with recirculated exhaust gas before being fed into the combustion chamber, so that combustion temperature and the resulting thermal stresses on the heat exchange surfaces can be kept within safe limits. The actual substances in the combustion gas and the associated overall sizing of the exhaust recirculation pipework depend on the temperature and the heat capacity at the point of extraction of the exhaust gas. This is, therefore, an issue where further optimisation is necessary. In principle, however, it appears that approximately 2/3 of the exhaust stream downstream of the boilier must be recycled.The boiler itself and the water/steam side of the power plant cycle resemble essentially those in conventional modern steam plants with the now usual overcritical fresh steam parameters and interm
https://ufordat.uba.de/UFORDAT/pages/PublicRedirect.aspx?TYP=PR&DSNR=86893
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