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AssigneeConsejo Superior de Investigaciones Cientificas
InventorsJuan Carlos Abanades García, Ramón Murillo Villuendas
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This invention involves a cyclic method for capturing CO2 from gas streams arising from processes of reforming, gasification or combustion of carbonaceous fuels. The method is based on these gas streams reacting with solids that contain at least CaO and a metal or an oxidized form of the metal. The method is characterized by the oxidized form of the metal being able to undergo a sufficiently exothermic reduction reaction for the heat released during the reaction to cause the decomposition of CaCO3. The thermodynamic and kinetic characteristics of the method of this invention make it ideal for the removal of the CO2 present in gas streams resulting from processes such as hydrocarbon reforming or the combustion of carbonaceous fuels.
A cyclic method for capturing the CO2 contained in a gas stream, said method comprising reacting the gas stream with a mixture containing at least solid CaO and a second solid or the oxidised form of the second solid, wherein the oxidised form of the second solid undergoes an exothermic reduction reaction with a fuel gas so that the heat released during the reaction is used for the decomposition of CaCO3.
Dependencies are inferred from the claim text.