3d-Printing of Adsorbents for Increased Productivity in Carbon Capture Applications (3d-Caps)

The 3D-CAPS project aims to increase the productivity (kg CO2/m3hr) of adsorbent based carbon capture technologies by an order of magnitude through structuring, enabled with 3D-printing. This productivity increase would allow for a reduction of the size of the adsorbers and the associated CAPEX and/or energy requirements. pre-combustion, as well as post-combustion technologies, are investigated using potassium-promoted hydrotalcite (K-HTC) for sorption-enhanced water-gas shift (SEWGS) and aminefunctionalized silica (ImmoAmmo) as sorbent, respectively. This contribution presents a technical overview highlighting several aspects of the project ranging from CFD modelling to assess the shape of the sorbents, 3D-printing of the sorbent materials as well as testing of the ImmoAmmo sorbent for post-combustion capture applications. It is discussed how several essential elements of the productivity improvement have been separately proven in the 3D-CAPS project, both by modelling and experimentally: maintained adsorption capacity upon 3D-printing, reduced drop reduction, and improved mass transfer .