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Dry exhaust gas cleaning system certified by DNV GL

A dry exhaust cleaning system, or scrubber, that does not use seawater, has been certified by classification society DNV GL.

The Bicar dry scrubber developed by Solvay and Andritz was installed on the ro-pax ferry Piana operated by La Méridionale in April this year and according to a joint press release from the three companies has shown “very promising” first results.

The companies said that more than 96% of SOx were removed based on an assessment by independent third party CERTAM.

Designed to comply with the IMO 2020 regulations reducing sulphur emissions from ships to below 0.5% while continuing to allow the use of high sulphur fuel, the scrubber has now been certified by DNV GL.

Unlike other scrubber that use seawater, and in the case of open-loop systems discharge the washwater into the sea, the dry system developed by Solvay uses Solvair with Bicar as the sorbent for sulphur oxide. Andritz has been responsible for the design and engineering of the shipboard exhaust gas cleaning system.

A growing number of countries and ports have banned the discharge of washwater from open-loop scrubber systems for their waters.

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