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Projektbeschreibung GREEN-CC (GA: 608524)

Major sources for human made CO2 emissions comprise the energy and the industrial sector including
cement production. One of the most appropriate concepts to capture CO2 from such point sources is
the oxyfuel combustion. The main energy demand for this method results from the O2 generation, which
is usually done by air liquefaction. This energy demand can substantially be lowered using thermally
integrated separation modules based on ceramic oxygen transport membranes (OTM). It is least if the
OTM is integrated in a 4-end mode, which entails that the permeating oxygen is swept and directly diluted
using recirculated flue gas. Up to 60% reduction in capture energy demand compared to cryogenic air
separation and up to 40% reduction compared to post-combustion capture approaches can be achieved.

GREEN-CC will provide a new generation high-efficiency capture process based on oxyfuel combustion.
The focus lies on the development of clear integration approaches for OTM-modules in power
plants and cement industry considering minimum energy penalty related to common CO2 capture and
integration in existing plants with minimum capital investment. This will be attained by using advanced
process simulations and cost calculations. GREEN-CC will also explore the use of OTM-based oxyfuel
combustion in different highly energy-demanding industrial processes, e.g. oil refining and petrochemical

Highly permeable membrane materials show a chemical instability against CO2 and other flue
gas components. One major challenge faced by GREEN-CC is therefore to identify and develop membrane
materials, components, and a PoC-module for the 4-end mode OTM integration. The desired
membrane assembly will consist of a thin membrane layer supported on substrates with engineered porosity
and oxygen reduction catalysts with high and stable activity in flue gas. As proof of concept, a planar
membrane module will be developed which involves technical hurdles like joining technology.

Green CC: Workpackage (WP)

Green CC: Workpackage (WP) interaction

  • WP1: Membrane development (asymmetric)

  • WP2: Catalyst development and application

  • WP3: Application oriented testing

  • WP4: Proof-of-concept

  • WP5: Process engineering

  • WP6: Training and dissemination

  • WP7: Management

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