Why NOx-reduction?
- NO and NO2 (NOx) are toxic gases
- NOx contributes to smog, acid rain and global warming
- NOx causes human respiratory problems, e.g. asthma
Ships are one of the biggest NOx sources in the world. NOx emissions from ships cause pollution over land and cause eutrophication of the seas.
Why SCR (Selective Catalytic Reduction)?
- The most efficient solution (will be found on all next generation trucks and buses)
- 6-9% fuel and CO2 saving potential
DANSK TEKNOLOGI has developed a SCR system with multipoint, airless urea injection that reduces NOx emission from marine engines.
Airless technology
The airless technology was originally developed for use on heavy trucks and busses. It is the preferred technology for next generation of trucks and busses. The heart of the system is derived from the innovative Digital Dosing pump technology that DANSK TEKNOLOGI has developed for GRUNDFOS. Based on this unique knowledge, a SCR system suited especially for marine engines has been developed.
Unique benefits of the Digital Airless Multipoint® SCR System
- High Precision Digital Dosing of Urea
- Multipoint, Airless Urea Injection
- No need for compressed air
- High NOx-reduction without ammonia slip
- NOx-reduction better than IMO 2016 requirement
- Very compact design
- Integrated silencer and catalyst
- No need for mixer
- No need for extra space compared to traditional silencer
- Robust airless injection nozzles without electronics or moving parts
- Easy to install and service
- Proven, reliable and cost efficient components
- The DT system is based on intensive R&D, lab. and field test of SCR technology for trucks and buses
- Ready for all heavy diesel engines running on marine diesel oil
- Modular concept easy to adapt to a wide range of applications
- Potential for 6-9% saving in fuel and CO2 emission (with engine tuning)
1st. system installed on a patrol vessel of the Diana class
|
|
Compact design
Due to the integrated silencer and catalyst, there is no need for extra space compared to the traditional silencer
The drawing above shows the design used for the first installation on the Diana class vessel. The traditional silencers are removed and the SCR system with airless multipoint urea injection are installed in the same space.
|
