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Geothermal Emission Control

Description du projet

Une technologie innovante pour une énergie géothermique plus propre

Les centrales géothermiques émettent du CO2, qui est un gaz à effet de serre. Le projet GECO, financé par l’UE, mettra en œuvre une technologie innovante, récemment développée et ayant fait ses preuves au niveau pilote en Islande, destinée à limiter la production d’émissions des centrales géothermiques en Europe et dans le monde et transformer ces émissions en produits commerciaux. GECO réalisera un programme de surveillance détaillé et des analyses géochimiques dans quatre différents systèmes géothermiques (Islande, Italie, Turquie et Allemagne). Son objectif est de créer des outils de modélisation plus précis permettant de prévoir les réactions qui interviennent sous la surface en réponse à l’écoulement induit des fluides. Le projet fera progresser les méthodes de captage et de purification du gaz en réduisant la consommation de ressources pour fournir aux tierces parties des flux de CO2 utilisables moins chers.

Objectif

GECO will advance in the provision of cleaner and cost-effective non-carbon and sulphur emitting geothermal energy across Europe and the World. The core of this project is the application of an innovative technology, recently developed and proved successfully at pilot scale in Iceland, which can limit the production of emissions from geothermal plants by condensing and re-injecting gases or turning the emissions into commercial products. To both increase public acceptance and to generalise this approach, it will be applied by GECO in four distinct geothermal systems in four different European countries: 1) a high temperature basaltic reservoir in Iceland; 2) a high temperature gneiss reservoir in Italy; 3) a high temperature volcano-clastic reservoir in Turkey; and 4) a low temperature sedimentary reservoir in Germany. Gas capture and purification methods will be advanced by lowering consumption of resources, (in terms of electricity, water and chemicals) to deliver cheaper usable CO2 streams to third parties. Our approach to waste gas storage is to capture and inject the soluble gases in the exhaust stream as dissolved aqueous phase. This acidic gas-charged fluid provokes the dissolution of subsurface rocks, which increases the reservoir permeability, and promotes the fixation of the dissolved gases as stable mineral phases. This approach leads to the long-term environmentally friendly storage of waste gases, while it lowers considerably the cost of cleaning geothermal gas compared to standard industry solutions. A detailed and consistent monitoring program, geochemical analysis, and comprehensive modelling will allow characterising the reactivity and consequences of fluid flow in our geologically diverse field sites letting us create new and more accurate modelling tools to predict the reactions that occur in the subsurface in response to induced fluid flow. Finally, gas capture for reuse will be based on a second stage cleaning of the gas stream, through amine separation and burn and scrub processes, producing a CO2 stream with H2S levels below 1 ppm, which is the prerequisite for most utilisation pathways such as the ones that will be applied within the project.

Appel à propositions

H2020-LC-SC3-2018-2019-2020

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Sous appel

H2020-LC-SC3-2018-RES-SingleStage

Régime de financement

IA - Innovation action

Coordinateur

CARBFIX OHF
Contribution nette de l'UE
€ 1 770 102,82
Adresse
BAEJARHALS 1
110 Reykjavik
Islande

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Région
Ísland Ísland Höfuðborgarsvæði
Type d’activité
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Liens
Coût total
€ 2 724 654,20

Participants (23)