Oxyfuel combustion capture

Carbon capture and storage

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Oxyfuel combustion capture

Coal is combusted with oxygen
Coal is combusted with oxygen instead of air in a boiler, creating steam, which is used to drive a turbine and produce electricity.
Flue gas is rich in carbon dioxide
The resulting flue gas is rich in CO2.
Carbon dioxide is transported for storage
This high CO2 flue gas is transported to the storage site.

Oxyfuel involves combusting coal in a mixture of oxygen and re-circulated flue gas. The resulting exhaust is almost pure CO₂ that can be captured and stored.

Oxyfuel combustion CO₂ capture

Oxyfuel combustion CO₂ capture involves the combustion of coal with virtually pure oxygen, rather than air, to fuel a power plant’s boiler.

Nitrogen makes up about 78% of the normal air we breathe. By eliminating nitrogen from coal combustion, the resulting power station flue gas is a highly concentrated stream of CO₂. This CO₂ stream can then be “captured” and is suitable for carbon storage.

Oxyfuel combustion can be retrofitted to conventional coal power plants with relatively little modification. Oxyfuel combustion with CO₂ storage is currently in demonstration phase.

Learn about Oxyfuel capture research in Australia on the Callide Oxyfuel Project page.

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