IP & E APPLICATION
OXYFUEL COMBUSTION CARBON CAPTURE
Oxyfuel combustion is based on denitrification of the combustion medium . The nitrogen is removed from the air through a cryogenic air separation unit ( ASU ) or with the use of membranes .
Combustion thus takes place with nearly pure oxygen , and the resultant flue gas contains mainly CO 2 and water . Trace components like oxides of nitrogen ( NOx ) and
SO 2 may be present . The CO 2 is purified by removing water and impurities .
Remaining small amounts of
N 2
, O 2 and Ar are vented off , but may contain traces of CO 2 . The production of O 2 requires a significant amount of energy , which results in a reduction of the efficiency of the power plant . Further , the purification and the compression of the CO 2 stream also requires energy .
The combustion with O 2 is currently applied in the glass and metallurgical industry . Oxyfuel combustion for steam and power production using solid fuels has been at present only proven in test and pilot facilities . Oxyfuel combustion can also be applied in natural gas-fired concepts .
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