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The Marine Exhaust Solutions EcoSilencer® is the economic solution to regulations requiring lower SO2 emissions from ships.
The EcoSilencer®’s innovative patented design brings proven, reliable, and low maintenance principles of seawater scrubbing systems, used for decades by land based applications for SO2 emission reduction, to the shipping industry.
With first applications of scrubbing technology experienced in
1998, the now patented EcoSilencer design has undergone 6 years of testing and shipboard trials that have proven the systems ability to dramatically reduce SO2 in exhaust emissions, remove soot particulate, and reduce exhaust noise.
Recently completed trials have proven EcoSilencer® seawater scrubbing system saves
millions of dollars in expected low sulphur fuel cost premiums, and provides superior reduction rates for SO2 removal over switching to low sulphur residual fuel. In fact, system trials have been so successful, that we are able to offer a Guarantee of Performance with every installation.
Depending on your vessels engine configuration, the EcoSilencer® will reduce SO2 exhaust emissions by up to 90 % - with a minimum performance guarantee that will allow you to burn the maximum 4.5% sulphur fuel and still surpass the regulated reduction to 1.5% sulphur fuel.
The MES EcoSilencer® works by using its patented design to mix the hot exhaust gas in a turbulent cascade with seawater. Our technology ensures that surface area for contact between gas and water is high, and sufficient time for absorption of pollutants is provided.
The acidic gasses, and particulate removed from the exhaust gas are pass through a water treatment system is designed to filter wastes on a continuous basis, and to provide outlet water that is environmentally safe. Test results on the overboard discharge water easily pass clean water standards set by USA EPA document Quality Criteria for Water 1986, EPA 440/5-86-001
Features & Benefits
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Guaranteed performance results |
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Saves on fuel costs |
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Burn 4.5% SO2 bunkers and still surpass MARPOL Annex VI |
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Safe, reliable low maintenance, no reagents, no catalysts,
no filters to replace or clean |
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Suitable for installation on any engine size; 100 kW to
100,000
kW |
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Easily handles changing engine load |
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Works with any inlet seawater conditions and engine
loading |
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Operates over a range of insertion back-pressure less than 100 mm
H2O |
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Superior SO2 reduction & fuel cost savings through EcoSilencer® scrubbing |
The principle of operation of EcoSilencer® is based on using sea water as
scrubbing medium for SO2, NOx, soot and particulate removal.
Overboard sea water (cooling water) enters the system through a sea chest
and a set of strainers and is pumped by sea water pump into a heat
exchanger.
After passing through the heat exchanger, the cooling water is discharged
overboard.
Before entering the heat exchanger, a portion of overboard sea water is
directed into a separate water circulating system (scrubbing water).
The scrubbing water is pumped through a bottom part of each installed
EcoSilencer®.
One EcoSilencer® is provided for each diesel engine.
Inside each EcoSilencer®, engine's exhaust gas passes through a shallow bath
of scrubbing sea water.
In the process, SO2, NOx, soot and particulate are removed from the
exhaust gas (see performance data sheet for removal rates).
After scrubbing process, the scrubbing water is pumped out from each
EcoSilencer® through a water filtration plant where it passes through a
series of primary and secondary hydro cyclones.
Primary hydro cyclones remove heavy fractions such as soot particles and
other solids.
Secondary hydro cyclones remove light fractions such as oils.
Removed soot, solids and oils are diverted into a settling tank for further
separation, by gravity, and onshore disposal.
After filtration, a portion of cleaned scrubbing water joins the cooling
water line and is discharged overboard (see discharge water data sheet for
filtration performance).
The remaining portion of scrubbing water passes through the heat exchanger,
which removes the excess heat from the scrubbing water, before returning
back into the water circulating system.
The engine size determines the size of the cooling and scrubbing water
systems.
Please contact MES for details.
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