The International Maritime Organization (IMO) has set a progressive timetable for limiting NOx and SOx emissions. In Emission Control Areas (ECA), tighter limits and an accelerated timetable of restrictions apply to zones comprising up to 200 nautical miles from the coastal baselines. The number and coverage of ECAs, including those in effect for the American and Canadian coastlines, is growing.
IMO Tier III regulations will have a significant impact on ship engine activity (for propulsion, auxiliary power generation, etc.) in ECAs with the NOx limit restrictions (for ships launched starting in 2016) expected to require the use of air pollution control technology.
The most effective means of removing NOx is the SCR system. Nations such as Norway are using market instruments such as the NOx Fond to force a reduction in such emissions. SCR is proving to be a popular choice as the best available technology.
Johnson Matthey's DeNOx - SCR system for shipping
- An established technology
- 50 years experience on land
- 30 years experience on sea
- More than 550 vessels equipped
- Reference lists available upon request
Johnson Matthey's SCR systems, with urea injection, have been successfully applied to shipping to remove up to 95% of NOx. Our first SCR system was installed in 1995.
Today, hundreds of ships burning MDO, HFO, ULSD or LNG fuels are equipped with Johnson Matthey technology. That includes SCR systems on marine diesel drive and APU engines and SCR systems on marine boilers.
