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Oxy-fuelling (coal)


Technology Description

An oxy-fuelling coal-fired power plant involves the combustion of coal using nearly pure oxygen instead of air, resulting in a flue gas composed of CO2 and water vapour, which can be dehydrated to obtain a high-purity CO2 stream. Typically, oxygen is commercially produced via low-temperature air separation. Lowering the energy consumption and cost for oxygen production (via improved low-temperature air separation or air-separating membranes, or by generating oxygen during periods of low-cost power, e.g. during night time), and the overall oxyfuel process, are key factors in reducing capture costs.

Relevance for Net Zero

Competing with alternative (and in the case of post-combustion more mature) CCUS technologies for coal-fired power plants

Key Countries

Australia, Spain

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