| Abstract
| - This paper presents the basic economics of an emergingconcept for CO2 capture from flue gases in powerplants. The complete system includes three key costcomponents: a full combustion power plant, a secondpower plant working as an oxy-fired fluidized bed calciner,and a fluidized bed carbonator interconnected with thecalciner and capturing CO2 from the combustion power plant.The simplicity in the economic analysis is possiblebecause the key cost data for the two major first componentsare well established in the open literature. It is shownthat there is clear scope for a breakthrough in capture costto around 15 $/t of CO2 avoided with this system. This ismainly because the capture system is generating additionalpower (from the additional coal fed to the calciner) andbecause the avoided CO2 comes from the capture of the CO2generated by the coal fed to the calciner and the CO2captured (as CaCO3) from the flue gases of the existingpower plant, that is also released in the calciner.
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