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OxyFuel Combustion

 Air Products' Co<sub>2</sub> Compression and Purification Process Integrated Into a Coal-Fired Power Plant
Oxyfuel combustion enables lower capture cost by increasing the concentration of CO2 in flue gas. However, the other conventional products of combustion remain present in the flue gas: water vapor; oxygen; nitrogen (albeit reduced); argon; acid gases such as SO3, SO2, HCl, and NOx. To prevent corrosion and comply with likely specifications for sequestration, the acidic impurities will need to be removed from the CO2 stream before it is introduced into the pipeline. There may also be other stringent requirements on purity, particularly for applications such as Enhanced Oil Recovery (EOR).

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