Wärtsilä Hybrid Scrubber System

Wärtsilä provides hybrid scrubber system solutions which have the flexibility to operate in both open and closed loop using seawater to remove SOx from the exhaust. This provides a flexibility of operation in low alkaline waters, as well as the open ocean.

When at sea the switch can be made to open loop using only seawater. The sulphur oxides in the exhaust react with the water to form sulphuric acid. Chemicals are not required since the natural alkalinity of seawater neutralizes the acid.

When required to switch to closed loop, for instance whilst entering a port in a low alkalinity area, the natural alkalinity of seawater is boosted by an alkali which uses caustic soda (NaOH) as a buffer.

    References

    • Harmony of the Seas
      The Harmony of the Seas is powered by four 12-cylinder Wärtsilä 46F engines and two 16-cylinder Wärtsilä 46F engines, featuring best-in-class fuel economy, and outstanding power-to-weight and power-to-space ratios. For effective manoeuvring, the ship has four Wärtsilä CT3500 transverse thrusters.

      Harmony of the Seas

    • M/S Robin Hood
      TT-Line, the German-Swedish ferry operator, selected Wärtsilä Hybrid Scrubber Systems to be retrofitted to its Ro-Pax vessel, the “M/S Robin Hood” as part of TT-Line’s Green Ship strategy.

      M/S Robin Hood

    • MV Theben
      The RoRo vessel MV Theben is one of the two recently delivered ships with Wärtsilä EGC systems, owned by a Japanese shipowner and currently being operated by Wallenius Wilhelmsen.

      MV Theben

    • Jolly Diamante
      Wärtsilä has supplied the open loop scrubber systems for four new 45,000 dwt Ro‑Ro ships for Italian owner Ignazio Messina & Co.

      The Jolly Diamante, owned by Ignazio Messina & Co, was the first ever vessel to operate commercially with a scrubber system when it entered service in December 2011.

      Jolly Diamante

    Related press releases

    Product hologram

    Environmental solutions - Retrofitting Wärtsilä Scrubber Systems

    Related products

    Contact us

    Please fill in the form if you have an inquiry related to EXHAUST GAS CLEANING. Fields indicated with an asterisk (*) are required. If you have an inquiry concerning an existing installation, please send us a service inquiry.

    Find your local Wärtsilä office

    © 2017 Wärtsilä