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As of December 1, 2013, a closed loop scrubber installation designed for marine applications has been up and running at the Marine Exhaust Technology A/S (MET) test facility in Frederikshavn, Denmark.

As a result, MET says it has become the first supplier in Denmark with operational full-scale scrubber and selective catalytic reduction (SCR) test facilities, where technology and solutions can be tested and proven under various conditions and in various setups.

The ongoing tests at the MET facility in Frederikshavn include tests of different combinations of SCR, boiler and scrubber systems, tests of various process water treatment systems, monitoring and logging systems as well as advanced online remote control systems.

Jens Peter Faldt, CEO of MET, explained: "Our MX-Scrubber and MX-SCR solutions are proven, available and ready. The test facility enables us to test scrubbing and SCR technologies to their limits and furthermore enables us to push technology development further. We have lots of exciting new technology improvements and developments in the pipeline that will make it easier for ship owners to comply with upcoming SOx and NOx regulations as set forth in MARPOL Annex IV. Our aim is to improve the business case for ship owners by bringing solutions to the market that can lower the scrubber investment cost as well as the operation cost of the systems. Scrubbing technology is a proven technology that is now being adapted to marine purposes and it is already by far the most cost-effective solution to the SOx regulations that will be in force in Emission Control Area (ECA) zones just one year from now.

"Currently, we are testing a combined system featuring SCR, boiler and scrubber put together in an all-in-one solution. We are the first in the market to combine NOx and SOx removal solutions in one system and by doing so we are able to offer customers significant savings on both equipment as well as installation costs.”

In September 2012, the MET test facility was inaugurated and put in operation. While preparing and setting up the scrubber test facility, SCR solutions and various SCR installation setups have been tested throughout 2013.

All SCR tests have been conducted in cooperation with catalyst specialist Haldor Topsoe. "The MX-SCR system is now fully proven as the most effective and compact SCR-solution in the marine market including both vertical and horizontal solutions in customised installation setups," according to MET.

The test facility features a setup based on a 1MW MAN Diesel 9L16/24 marine engine connected to a generator and a heat recovery system. The engine is able to run on both marine gas oil (MGO) and heavy fuel oil (HFO). The electricity and heat generated is fed into the public electricity grid and the heat generated is used as a heating source for the MAN Diesel & Turbo SE production and R&D centre next door to the test facility.