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.

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    • 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. The full turnkey project was managed by Wärtsilä thereby minimizing downtime and risk, whilst guaranteeing performance and regulatory compliance. Delivery and installation took place during summer 2014.

      M/S Robin Hood

    • Tarago
      Wilh. Wilhelmsen ASA, the global rolling cargo operator, will retrofit their vessel Tarago with a Hamworthy Hybrid Exhaust Gas Cleaning System.

      Tarago

    • 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

      Jolly Diamante

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