Clean Marine develops unique EGCS technology

Clean Marine has patented a unique exhaust gas cleaning system (EGCS) specifically designed to meet the needs of the maritime industry. It is the only system currently on the market with true multi-stream exhaust gas handling.  This means that all exhaust sources onboard - including boilers - are served by one common EGC unit without encountering an increase in back pressure.


This is achieved by two fans and a gas recirculation mechanism integrated into the EGC unit, which ensures that pressure at the common gas meeting point is maintained at ambient level, irrespective of the amount of exhaust fed to the system.


The Advanced Vortex Chamber (AVC) is another vital and unique part of the Clean Marine EGC unit. This high-speed cyclone has outstanding separation efficiency and achieves a high sulphur and particulate matter (PM) trapping efficiency at minimum cost.


Clean Marine offers a proven, hybrid system that can operate in both open- and closed-loop mode. It differs from other systems in that it uses caustic soda in both modes, which means vessels can operate in  all  types of  water (including low alkaline and saline water)  in either mode and without loss of efficiency. Furthermore, the use of caustic soda enables the Clean Marine EGCS to meet the current pH limit for washwater discharges with good margin.


The Clean Marine EGCS is easy to operate and monitor and is also a cost-efficent option, especially for vessels with many exhaust sources, as the one EGCS unit simultaneously serve several combustion units.


Assuming a conservative USD300 per metric ton price difference between marine gas oil and high sulphur fuel oil,- and 100 percent of operations inside an emission control area (ECA) - payback time on the investment would be about a year.


A Clean Marine EGCS is operational and fully certified on the bulk carrier MV Balder and the company has recently signed a contract with Samsung Heavy Industries and AET for installation on two shuttle tanker newbuildings.


Clean Marine AS has since 2006 invested more than 20 MUSD in development of an Exhaust Gas Cleaning System (EGCS), better known as a scrubber, for the maritime industry. Through extensive testing in the workshop and in the field, our marine scrubber has been developed into a highly flexible multi stream exhaust gas cleaning device for existing and new ships. The multi-stream feature allows all exhaust sources onboard to be cleaned by one common cleaning unit, offering a competitive solution that is easy to operate. Our thorough knowledge of the maritime industry and sound engineering practice has been incorporated into the design of our marine scrubber. Clean Marine offers ship owners, engine makers and ship builders equipment and support needed to install an EGCS on both new buildings and existing ships.


Learn more about the operation inside U.S. ECA