The SCR process reduces NOX emissions to harmless nitrogen and water vapour.
Both diesel and gas engines can be equipped with SCR units. NOX emissions are typically reduced by 80-90 % by means for SCR techniques. Even up to 95 % reductions are achievable with more sophisticated control and bigger reactors.
The fuel oil quality is an important design parameter of SCR systems. Wärtsilä applies a robust durable design and efficient soot blowing for applications fired with high ash/sulphur fuel oils.
Reducing agent, ammonia or urea, of appropriate quality is required for the SCR process.
Features
- SCR unit tailored for Wärtsilä gas or diesel engines and suited for the application
- NOX reduction typically 80-90 %, with special arrangements even up to 95 %
- Soot blowing is recommended for all diesel engine applications
- No solid or liquid end-product produced
