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It is unlikely that the existing engine room will have enough space for the additional equipment and systems. Survey of the engine room space is to be carried out to determine the additional space needed, the scope of structure modification and the layout changes. Such surveys may be carried out inconjunction with the scrubber selection process so that the selected system will fit the layout and space of the existing engine room as far as possible in order to minimize the structure modification and onboard equipment relocation
An exhaust gas cleaning system(EGCS), also referred to as a scrubber, can take three forms; open-loop scrubber, closed-loop scrubber, and hybrid scrubber. Today, approximately 80 % of exhaust gas scrubber systems installed on vessels are open-loop scrubbers due to their low installation and operation costs
An open-loop scrubber utilizes seawater to scrub the exhaust gases. Thus, this method exploits the natural chemical composition of seawater. The seawater is pumped into and fed to the exhaust gas cleaning system(EGCS), and afterward, it is discharged. Still, the discharged water must abide by the IMOs scrubber wash water discharge limits.
Closed-loop scrubbers typically utilize alkaline-dosed seawater to scrub the exhaust gas. A closed-loop scrubber only requires half the amount of water to clean the exhaust gas streams than that of its open-loop scrubber counterpart, making it more energy-efficient.
A hybrid scrubber combines the open-loop scrubber and the closed-loop scrubber, operating with seawater and freshwater. Hybrid scrubbers typically operate in open-loop mode at sea and in a closed-loop mode in regulated waters, such as in the ECA as well as other areas, which have prohibited the use of open-loop scrubbers and wash water discharge.
SOx scrubber, retrofitting will involve
Ferscom design engineering team, working closely with the vessel owner, identified the most efficient ways for the successful installation and project management
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