Shipboard Plasma-Catalytic Methane Slip Abatement Pilot Successful
Daphne Technology and Maran Gas, part of the Angelicoussis Group, announce the conclusion of their joint pilot project that marked the first deployment of SlipPure™ Plasma-Catalytic Methane Slip Aftertreatment system on board the commercial LNG carrier, the Maran Gas Chios.Methane slip, the unburned methane released from dual-fuel marine engines, remains a key challenge for LNG-fueled vessels. Addressing this challenge is essential to unlock the full potential of LNG as a lower-emission marine fuel.
New Catalyst System Expected to Reduce Methane Slip
Mitsubishi Heavy Industries Marine Machinery & Equipment (MHI-MME) has begun demonstration testing of a methane oxidation catalyst system for LNG-fueled marine vessels which is being jointly developed with Daihatsu Infinearth Mfg.Methane oxidation is a chemical reaction in which methane (CH4) is converted into carbon dioxide (CO2) and water (H2O) through reaction with oxygen. The system’s purpose is to reduce methane slip – the release of unburnt methane in the exhaust gas of marine engines.The demonstration test…
MAN L35/44DF CD Genset Passes Type Approval Test
MAN Energy Solutions has announced the successful Type Approval Test (TAT) of its dual-fuel MAN L35/44DF engine for application as auxiliary Genset and electric propulsion at constant speeds, respectively, of 720 and 750rpm.The TAT involved the testing of both 35/44DF variants, namely the methane-capable 35/44DF CD and the methanol-ready 35/44CD.Testing took place from April 7 – 11 at the Changwon headquarters of STX Engine in South Korea with the participation of six classification societies.The L35/44DF CD engine is an upgraded version of the L35/44DF CR engine, first launched in 2015.
Spark Gas Conversion Reduces Methane Slip on LNG Carriers
Wärtsilä has introduced a new methane slip reduction solution for its Wärtsilä 50DF dual-fuel engine. The new technology, which converts Wärtsilä 50DF dual-fuel (DF) engines to spark gas operation, enables a more optimized combustion process, thereby improving efficiency and lowering methane emissions.Whilst operating on LNG, the conversion is designed to reduce methane emissions up to 75% more than the standard Wärtsilä 50DF engine.The spark gas conversion minimizes methane emissions…
Methane Slip Cut in Final VCR Tech Tests
WinGD reports that it completed shop tests of its variable compression ratio (VCR) technology, and the company claims that methane reductions from new X-DF engines with VCR technology deliver similar ship greenhouse gas (GHG) emissions to high-pressure dual-fuel technologies, while delivering a total system cost and fuel cost advantage for several vessel applications.The VCR shop test was completed at Mitsui E&S DU (MESDU) facilities in Japan, where the first X‑DF2.0 engines with VCR are being built for bulk carriers owned by NYK Lines.
