Skip to main content

Green Ray project to develop solutions minimising methane slip from LNG-fuelled engines

Published by , Editorial Assistant
LNG Industry,


A consortium including technology group Wärtsilä has secured EU funding to develop solutions minimising methane slip from marine engines, advancing the environmental and climate benefits of LNG as a ship fuel.

Co-ordinated by VTT Technical Research Centre of Finland, the Green Ray project brings together several companies from across the shipping value chain: shipyard Chantiers de l’Atlantique, ship owner CMA CGA, classification society DNV GL, the Finnish Meterological Institute, ship manager MSC Cruises Management, non-profit organisation Revolve Water, and energy major Shell.

The project will develop on-engine technologies for low-pressure dual-fuel engines – both two- and four-stroke – as well as a novel aftertreatment concept. These solutions will be advanced to a high state of technology readiness, including demonstrators installed on two newbuilds and one retrofitted to an existing vessel. All the technologies developed in Green Ray will also be fully capable to utilise bio- or synthetic methane instead of fossil LNG.

Wärtsilä will develop technology specifically for low pressure four-stroke dual-fuel engines that enables methane slip reduction, increases efficiency, and lowers operational costs at all engine loads. This technology targets the largest four-stroke engines on the market as widely used by cruise ships, ferries, and gas carriers.

Wärtsilä will also develop an on-engine technology for two-stroke engines around a patented LNG injection system to reduce methane slip from tankers, container ships, etc. Both technologies will be demonstrated at sea in real application during the project in collaboration with the Green Ray partners.

The use of LNG as a marine fuel is accelerating, driven by a well-developed supply infrastructure, a clear transition to cleaner fuels and significant air pollution and climate benefits. The issue of methane slip – unutilised and thus unburned fuel escaping into the atmosphere from engines and across the production and supply chain – is seen as one of the main challenges to wider uptake.

“Methane slip has become an important factor in ship owners’ decisions about whether to use LNG fuel,” said Kati Lehtoranta, Principal Scientist, VTT. “With these promising technologies, we aim to reduce the slip contributing directly to reduction of the total greenhouse gas (GHG) emissions, opening this pathway to even wider segment of the maritime market.”

Shell has developed a proprietary methane abatement catalyst system that has been lab tested and scaled up to a field demonstration, where it was proven to be effective not only in significantly reducing methane slip (over 90%), but also in handling typical compounds that can degrade the catalyst, via the inclusion of a guard bed.

“Shell’s climate ambition to become a net zero emissions energy business by 2050 will require us to explore a range of avenues that have the potential to help us, our partners, and customers to decarbonise the existing LNG value chain. We are continuously working to improve the value proposition of LNG through dedicated technology research, and we are keen to develop potential solutions to minimise methane slip at such a relevant project as Green Ray,” explained Alexander Boekhorst, VP Gas Processing and Conversion Technology at Shell.

“This research will allow us to build on the continuous improvements made in reducing methane slip from engines over the past 20 years,” commented Sebastiaan Bleuanus, General Manager, Research Co-ordination & Funding, Wärtsilä Marine Power. “Taking these solutions for newbuilds and retrofits to near commercial readiness will be an important step for the long-term viability of LNG as a marine fuel.”

The project has received funding of approximately €7 million from Horizon Europe. It will run until 2027.

Read the article online at: https://www.lngindustry.com/liquid-natural-gas/27022023/green-ray-project-to-develop-solutions-minimising-methane-slip-from-lng-fuelled-engines/

You might also like

 
 

Embed article link: (copy the HTML code below):


 

This article has been tagged under the following:

LNG as fuel news