Clean fossil fuel heat and power plants - General information

The oxyfuel technology is one of three main technology options for CO₂ capture from fossil fuel fired power plants. Combustion takes place with pure oxygen and CO₂ is extracted after combustion by flue gas cooling.

Oxyfuel is the only technology option that captures ~ 100 % of produced CO₂. Another advantage with the oxyfuel technology is that nitrogen does not take part in the combustion process, and therefore no NO_X are produced.

Based on the Carnot principle the thermal efficiency of a power process increases at a higher temperature level of heat supply. High thermal efficiency can be achieved by fuel supply to a gas turbine. An oxygen fired gas turbine is not mature technology and development is required to obtain an oxyfuel process with high thermal efficiency.

CO₂ capture is a necessary indictment to reduce some of the greenhouse gas emissions. Oxyfuel is the only technology with both zero emissions of CO₂ and NO_X and has the potential of high thermal efficiency. An oxyfuel gas turbine development program is a necessary and essential initiative to obtain mature high efficient oxyfuel technology.

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