The solution: Marine SCR
SCR technology uses a simple chemical reaction to neutralise the NOx in the exhaust. The catalyst promotes the reaction between NOx and a reducing agent, such as ammonia, at the relatively low temperatures of an exhaust stream. This process produces harmless nitrogen and water. Highly efficient, SCR is capable of removing up to 99% of the NOx. The technology is well-established, with widespread application and has been used on marine vessels since the early 1990’s.
SCR is installed on more than 1,000 vessels but yet shipping remains a niche market for the technology. All is set to change as the IMO’s Tier III requirement is now in force requiring new build vessels from 2016 to emit substantially reduced NOx when operating in Emission Control Areas. SCR is a proven and commercially available technology capable of meeting the IMO Tier III NOx requirements and is expected to become a standard in shipping, just as catalytic converters are on cars.
Key facts and figures
- Proven and viable technology
- 1,000+ known SCR installations
- 250+ retrofitted SCR
- 1st marine retrofit dates to 1989
- € 15-70 per kW engine power, CAPEX
- € 5-7 per MWh engine power, running and maintenance costs
- Supports fuel efficiency gains, lower ship running costs and CO2 emissions