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Supercritical CO2 cycle (coal with CCUS)

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Technology Description

While in conventional power plants flue gas or steam is used to drive one or multiple turbines, in supercritical CO2 (sCO2) cycles supercritical CO2 is used, i.e. CO2 at or above its critical temperature and pressure, where liquid and gaseous phases of CO2 are indistinguishable. sCO2 cycles offer many potential advantages, including higher plant efficiencies, lower air pollutant emissions, lower investment costs and high CO2 capture rates. In some cases, they could also allow for reduced water consumption. sCO2 cycles typically use nearly pure oxygen to combust the fuel gas in order to create a flue gas stream comprised primarily of CO2 and water vapour.

Relevance for Net Zero

There is currently limited information on several operational challenges, including on combustion and flame dynamics.

Key Countries

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