Rolls-Royce is introducing a new exhaust gas after-treatment solution in order to comply with IMO Tier III emission standards.
This completes the company’s portfolio for mtu marine propulsion systems. The new system is being certified in collaboration with exhaust gas after-treatment specialist Eminox for Series 2000 mtu engines.
Exhaust gas after-treatment using selective catalytic reduction (SCR) enables offshore supply vessels, ferries and patrol vessels fitted with engines from the mtu Series 2000 to operate in emission-regulated maritime areas. These include, amongst others, the North Sea and the Baltic Sea.
Dr Lukas Köhler, SVP Global Marine and Mining, Rolls-Royce Power Systems, said: “With this new offering, all models in the mtu Series 2000 are now available with integrated SCR systems. We have already launched a new, flexible and compact solution for the more powerful mtu Series 4000. This enables us to equip our customers with future-proof propulsion systems to meet the challenges of modern shipping.”
The new integrated solution is said to offer ship operators several advantages: it is designed for a service life of up to 16,000 operating hours, depending on the load profile. It requires no compressed air for dosing and can be flexibly integrated into various ship designs.
An aqueous urea solution reacts with NOx in the exhaust gases and converts them into harmless substances. The SCR system reduces NOx emissions by 75% compared with the IMO II limits.
Image: MTU 2000 engine with SCR (source: Rolls-Royce Power Systems)
