BLUNOX SCR System retrofitted on Royal Danish Navy patrol vessels

Type of ships: 6 patrol vessels (Diana Class)
Ship owner: Royal Danish Navy
New build/retrofit: Retrofit
Number of SCR systems installed on each ship: 2
Engine Installation: 2 x MTU 2040 kW
Fuel Type: MGO
Temperature: 450-540°C
Exhaust Silencer: 35 Db(A)
NOx reduction: IMO Tier 3 compliance

By the end of 2011, six Royal Danish Navy patrol vessels have BLUNOX SCR systems installed; total of 12 systems. 

Results
  First vessel with BLUNOX SCR was completed in 2009.
  All six patrol vessels now have BLUNOX SCR systems installed (total of 12 systems).
  NOx-reduction up to 95%.
  Airless design means a minimum of moving parts/electronics and a very compact system.
  Airless operation means no need for compressed air and no extra fuel consumption.
  Existing 35 dB(A) exhaust silencer replaced by SCR System and same noise attenuation achieved.
  The vessels comply with IMO requirements valid from 2016 and on.

  

Admiral Danish Fleet

Admiral Danish Fleet is the overall responsible for military security and safety at sea, including pollution combating at sea.
 

Diana Class

The main tasks of the Diana class is surveillance, maintaining of sovereignty, search and rescue, diving sickness management, environmental protection and surveillance, assistance to the Police and Explosive Ordnance Disposal.

 

Airless TwinJet Nozzles

The patented design ensures effective NOx reduction without compressed air and exhaust gas mixer required by traditional SCR systems.