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GREEN RAY project to develop methane slip reduction solutions for LNG-fuelled vessels

21 Jul 2022

The recently launched GREEN RAY project will develop three solutions to reduce methane slip from liquified natural gas (LNG) in new and existing ships, according to the initiative on Thursday (21 July).

The five-year project, starting in June 2022, has received a EUR 7 million grant from the European Commission within the new Horizon Europe research and innovation programme.

Coordinated by VTT Technical Research Centre of Finland, the project brings together partners from across the shipping value chain: Chantiers de l’Atlantique, CMA Ships, Wärtsilä, Shell, DNV, the Finnish Meteorological Institute, MSC Cruises Management, MSC Malta Shipyard Management, and REVOLVE communications agency.

The project is focused on LNG engine technology based on a low-pressure dual-fuel concept, which is the most popular in marine applications. To prevent methane slip the GREEN RAY consortium will develop two on-engine technologies and one after-treatment technology for existing vessels and new ships:

  1. Four-stroke engine: this engine will aim to enable methane slip reduction at all engine loads and to be applicable to the largest engines in the market involving cruise, ferry and gas carriers.
  2. Two-stroke engine: around a patented LNG injection system, this engine will aim to significantly reduce methane slip from e.g. tankers and container ships.
  3. Sulphur resistant catalyst system: this system will significantly reduce methane slip emissions – up to 95% – and reduce the methane slip to less than 1g/kWh. This system will help shipowners to reduce their greenhouse gas emissions as demanded by the IMO.

The developed technologies will be demonstrated onboard two new ships and one retrofit to existing vessels, all of them targeting the Technology Readiness Level (TRL) 7: System prototype demonstration in an operational environment. 

The consortium will also contribute to climate data collection via studying methane levels, which will allow for a more global assessment of GHG emissions from LNG marine fuel. The data collected will be combined with onboard experiments and modelling to provide a more comprehensive outlook of the climate impacts of marine transport.


Photo credit: GREEN RAY
Published: 21 July, 2022

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