1278516991595a1267106724867-brochure-o-wartsila-solutions-2015

EXHAUST GAS CLEANING• Wärtsilä Open Loop Scrubber SystemThe Wärtsilä open loop scrubber systems are designed to removeSO X from the exhaust and operates utilising seawater. The open loopscrubber system is our most straightforward scrubbing method. Itutilizes the natural alkalinity in seawater for scrubbing, and does notneed caustic soda. This method can be used in most seas around theworld, where alkalinity levels are high.Exhaust gas enters the scrubber and is sprayed with seawater,the SO X in the exhaust reacts with water and forms sulphuric acid.Chemicals are not required since the natural alkalinity of seawaterneutralises the acid. Wash water from the scrubber is treated andmonitored to ensure that it conforms to MEPC 184(59) criteria and canbe discharged into the sea with no risk of harm to the environment.90