IEA Clean Coal Centre

Combined SO2/NOx removal processes

Combined SO2/NOx removal processes remain considered fairly complex and costly. However, emerging technologies have the potential to reduce SO2 and NOx emissions for less than the combined cost of conventional FGD B for SO2 control and selective catalytic reduction (SCR) B for NOx control. Most processes are in the development stage, although some processes are commercially used on low to medium-sulphur coal-fired plants.

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