Innovation in high-temperature CO2-capture Development of novel solid sorbents

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One of the novel innovative concepts to remove efficiently CO2 from flue gas is a sorption process where a CaO-based solid sorbent is continuously circulating between two fluidized bed reactors. In the first reactor, CO2 is carbonated and captured in a ga s-solid reaction and, in a second step, CO2 is released by heating the formed compound in a regeneration reactor to produce a pure CO2-stream. The key factors in the further development of solid-based CO2-capture processes are the reaction kinetics, the c ost and long-term durability of the reactive solids, along with the development of technology to manage the large solid circulation rates. In the work proposed here, promising high-temperature CO2-sorbents previously studied at Institute for Energy Techno logy (IFE) will be developed further. The primary objectives are to reduce the production cost of the sorbent and improve the long-term mechanical durability of the particles. The work will include the development of a novel synthesis method from cheap an d abundant industrial minerals and the development of novel agglomeration techniques to produce mechanically stable solid particles. The evolution of the chemical and physical properties of the particles during long-term operation in realistic conditions will also be performed to highlight the potential of the material for industrial applications.