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Energy Procedia The DMX™ process : an original solution for lowering the cost of post-combustion carbon capture

Abstract : To make the deployment of carbon capture possible, it is highly needed to develop original solutions that induce low energy penalty and that are easy to operate. This paper aims at presenting the DMX™ process developed at IFP Energies nouvelles based on special solvents which are characterized by the formation of two immiscible phases for given temperature and CO 2 loading conditions. The concept of demixtion is briefly described in terms of physico-chemical properties, its interest and all required steps for appropriate process development are discussed. The corresponding process is presented and a technico-economic analysis is given. It is shown than one can reach a reboiler duty as low as 2.1 GJ/t CO 2 which is significantly lower than the 3.7 GJ/t CO 2 of the 30wt.% MEA reference process. It is also discussed that the energy consumption at reboiler cannot be the only parameter to consider for comparison with other processes and some further information about the DMX™ process are given. Operational issues are particularly discussed. In that sense, the performances of the DMX-1™ solvent in terms of degradation and corrosion are shown. Similarly a particular focus is made on the liquid/liquid separation which is a key aspect of the DMX™ process.
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Ludovic Raynal, Pascal Alix, Pierre-Antoine Bouillon, Adrien Gomez, Marie Le Febvre de Nailly, et al.. Energy Procedia The DMX™ process : an original solution for lowering the cost of post-combustion carbon capture. Energy Procedia, Elsevier, 2011, 4, pp.779-786. ⟨10.1016/j.egypro.2011.01.119⟩. ⟨hal-02420557⟩

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