La Méridionale is testing a new dry scrubber for SOx, PM and NOx


© S. Sauerzapfe

Posted on June 25, 2021 at 7:00 PM by

The maritime executive

French ro-ro / pax ferry operator La M̩ridionale launches new (and perhaps unprecedented) test of exhaust gas cleaning technology on board ship La Piana. He signed a contract with Austrian manufacturer ANDRITZ to test a combination of dry scrubber SOx and PM removal as well as urea / catalyst-based NOx removal Рall in one unit.

This system would allow La M̩ridionale to have a single, fully integrated exhaust gas cleaning system for the removal of SOx, PM and NOx Рa combination that would currently require the installation of three separate systems on board. any ship. ANDRITZ says the new suit will push the technology to its limits, but its engineers are confident it will deliver results.

The facility will use catalytic filter bags and urea injection to remove NOx, reducing the amount of space and equipment required for the process. ANDRITZ expects this combined process to be a very attractive alternative for industrial applications on land as well.

La Piana has already installed an ANDRITZ SOx / PM dry scrubber system, and the operator has ordered a second to treat emissions from three other main engines and two other auxiliary engines, covering a total propulsion load of over 40 megawatts. The company claims that this size range marks a new milestone in the cleaning of exhaust gases from dry scrubbers. The new filtration system will be installed in November 2021, with sea trials scheduled for February 2022.

According to ANDRITZ, La Méridionale chose its dry scrubber technology because of its environmental performance and low power consumption. ANDRITZ SeaSOx filtration technology is based on the injection of sodium-based sorbent for SOx absorption. It then uses a bag filter installed downstream of the injection point to remove particulates and sodium sulfate.

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