Catalytic removal of NOx, VOC and dioxin
UMICORE SCR Catalyst for removal of NOx in flue, exhaust and off-gases is very well proven with the implementation of the DeNOx catalysts and/or technology in numerous applications treating gas flows in the range from 1,000 to 2,500,000 Nm3/h. Similarly, the Umicore oxidation catalysts have been utilised in more than 350 units, cleaning off-gases from a wide variety of industries.
This has provided a unique basis for commanding all aspects of the said technologies and for further developing a number of ad-vanced and successful designs for simultaneous removal of NOx, VOCs, CO, dioxins, etc.
- To oxidize mercury so that it can be adsorbed in the FGD
First step - Mercury can be oxidized on the SCR catalyst:
- Hg0 + 2 HCI + 0.5 O2 ↔ HgCl2 + H2O
- NO + NH3 + 0.25 O2 ↔ N2 + 1.5 H2O