Marine Scrubber

PureSOx

Exhaust gas cleaning

Exhaust gas cleaning

Alfa Laval’s PureSOx removes sulphur oxides from the ship’s exhaust gas by scrubbing it with seawater or freshwater.

• Short payback time (1 to 2 years). • Sulphur removal rate >98% (exceeding IMO requirements). • Cost-saving solution (able to operate on HFO instead of expensive lowsulphur MGO). Introduction The unique hybrid design of Alfa Laval’s PureSOx gives both environmental and economical advantages. Shipowners can continue operating on heavy fuel oil instead of more expensive marine gas oil, while still meeting the strict International Maritime Organization (IMO) regulations regarding sulphur oxide emissions. Legislation In October 2008 the Marine Environment Protection Committee (MEPC) of the IMO agreed on the progressive reduction of the maximum sulphur content in fuels used on board ships. The revised Marpol Annex VI regulations reduce the global sulphur cap to 0.5%, effective from 1 January 2020. The limit applicable in Emission Control Areas (ECA) will be reduced to 0.1%, effective from 1 January 2015. Exhaust gas cleaning systems that reduce the emission of sulphur oxides to the same extent are approved by IMO. Experience Alfa Laval has more than 40 years of experience supplying scrubbers as an integrated part of inert gas systems on board ships. During 2008, our experiences from these systems were used to design and test an exhaust gas cleaning system at the MAN Diesel (1 MW engine) test facilities in Denmark. Installation on large Ro-Ro vessel The knowledge and experience from these tests was succesfully used to design an entire PureSOx system on board the DFDS Ro-Ro vessel “Ficaria Seaways”. A modular and flexible exhaust gas scrubber design was chosen with a high degree of operational flexibility, and future possibilities for upgrading the equipment. Installed after the 21 MW MAN engine, it is by far the world’s largest exhaust gas cleaning...