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Step-changes are required to accelerate the introduction of CCS technologies, one of the overall goals of the ERA-NET ACT program.
The project 3D-CAPS targets a productivity increase of an order of magnitude in two sorbent-based technologies for CCS. This will lead to a substantial decrease in overall equipment size and costs. This will be achieved using the latest available techniques for materials production: additive manufacturing, commonly known as 3D-printing. One bottle neck for traditional packed-bed solutions for sorbent-based CCS technologies is the trade-off between flow-rate through the reactor, pressure drop and kinetics of the adsorption process. The use of 3D-printing will allow bespoke material configuration solutions for sorbent-based CCS technologies not available with current production technologies that allow the maximum interplay between these three competing and complementary elements.
The basic principle behind the 3D-CAPS project is illustrated in the figure below.

The objectives of the project are:

  • To achieve a 10-fold productivity increase (i.e. increasing flow and/or productivity of materials) for two sorbent-based technologies in CCS;
  • To optimize sorbent shapes with Computational Fluid Dynamics (CFD) and other modelling tools, with direct realization in 3D-printed objects for testing under relevant conditions.

The project will develop two type of structured sorbents; Hydrotalcites for operation under pre-combustion conditions at elevated pressure (up to 30 bar) in the 350-550°C temperature range; and Amine Functionalised Silica-Supported sorbents for operation in post-combustion conditions in the 40-130°C temperature range. Additionally, the project will measure material performance of both these materials under relevant conditions up to TRL5, and assess performance with techno-economics within two CCS sectors; Natural Gas Combined Cycles electricity production, and decarbonised H2 production for refinery application. 3D-CAPS will produce a blueprint of the technology for further implementation in pilot scale facilities.