The Triton

Where in the World

Feadship develops alternate treatment for NOx emissions

ADVERTISEMENT

Feadship has created a new technology to reduce nitrogen oxide (NOx) emissions from diesel propulsion engines on yachts. 

Selective catalytic reduction (SCR) systems currently in use to bring engines into compliance with IMO tier III and EPA IV regulations only work when the exhaust temperature around the catalyst is at a certain level, which requires high speed, Feadship noted in a press release.

The systems also require yachts to carry a large volume of diesel exhaust fluid in holding tanks.

To address these issues, the company’s engineers partnered with the gas treatment department of the Netherlands Organization for Applied Scientific Research (TNO) to develop Oxywash, based on an idea from Roderick de Vries, technical director at Feadship Koninklijke De Vries Scheepsbouw.

According to Feadship, Oxywash systems remove NOx irrespective of engine temperature, take up less space, and are more environmentally friendly than standard SCR solutions. Oxywash works by making NOx water-soluble, then transferring it directly into seawater, where it is transformed into nitrite and nitrate.

When exhaust gas temperature is high, the reaction takes place via a catalyst; when the temperature is lower, ozone is instead injected into the gas to make it water-soluble. The ozone required is generated on board from the air, eliminating the need to keep chemicals on board, the company stated.

The technology is undergoing large-scale prototype testing, and the systems are expected to be ready for fitting on yachts soon, according to Feadship.

Related Posts...
Two hydrographic survey vessels that belong to the Royal Netherlands Read more...
Washington-based marine electronics company Furuno has launched a new WASSP Read more...
Fort Lauderdale-based safety and survival specialist ACR Electronics has a Read more...
WhisperPower, a Dutch manufacturer of hybrid power and propulsion systems Read more...
Ocean Link, a Rhode Island-based marine plumbing retailer and service Read more...

Share This Post

Leave a comment

Your email address will not be published. Required fields are marked *

Please answer the question below to leave a comment. * Time limit is exhausted. Please reload CAPTCHA.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Editor’s Picks

Acrew announces 2019 Crew Award finalists

Acrew announces 2019 Crew Award finalists

Finalists for Acrew’s 2nd annual Crew Awards have been announced. The finalists will be presented to an independent and anonymous panel …

News in the brokerage fleet: Alia project sells; Admiral new builds listed

News in the brokerage fleet: Alia project sells; Admiral new builds listed

Yachts sold Project Al Waab II, a 180-foot (55m) new build from Alia Yachts designed by Vripack, with delivery scheduled for summer …

Crew Compass: Working for liveaboards a seismic shift from charter life

Crew Compass: Working for liveaboards a seismic shift from charter life

Crew Compass: by Lauren Loudon People always ask me what it’s like to work on yachts? You must have some good stories, they say. …

Port state CIC inspections this fall to focus on emergency systems

Port state CIC inspections this fall to focus on emergency systems

The Paris and Tokyo MoUs on port state control will conduct a Concentrated Inspection Campaign (CIC) on vessel emergency systems and …