Capture
There are three main technology options for capturing the CO2 produced in large power plants.
- Oxyfuel combustion, where CO2 is practically the only product following combustion in almost pure oxygen and recycled flue gas, instead of air.
- Postcombustion, where CO2 is washed from the flue gas after conventional combustion.
- Precombustion, where a gasification process removes the carbon from the fuel before the resulting hydrogen gas, H2, is combusted.
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