Japanese companies NYK and Hitachi Zosen Corporation have collaboratively proposed the development of an N2O reactor for an ammonia-powered vessel. This project aims to address the issue of nitrous oxide (N2O) emissions associated with ammonia fuel usage, says an article published on offshore energy website.
Summary
- Japanese companies NYK and Hitachi Zosen Corporation propose the development of an N2O reactor for an ammonia-powered vessel to address nitrous oxide emissions associated with ammonia fuel usage.
- Hitachi Zosen will lead the development of catalysts and equipment to reduce N2O emissions from marine 2-stroke engines, focusing on optimizing equipment layout for efficiency.
- NYK plans to integrate the N2O reactor into an ammonia-fueled ship scheduled for delivery in November 2026, conducting safety and performance tests during demonstration voyages.
- ClassNK will oversee safety verification of the N2O reactors and contribute to basic research for developing international guidelines.
- The project aims to reduce N2O emissions, with a global warming potential approximately 300 times higher than CO2, to contribute to carbon-neutral international maritime transport.
Catalytic Removal System
Hitachi Zosen will lead the development of catalysts and equipment for reducing N2O emissions from marine 2-stroke engines. They will also focus on optimizing equipment layout for maximum efficiency.
Implementation On Ammonia-Fueled Ship
NYK plans to integrate the N2O reactor, developed by Hitachi Zosen, into an ammonia-fueled ship scheduled for delivery in November 2026. The company will conduct safety and performance tests during demonstration voyages.
Safety Verification And Guidelines Development
ClassNK, as a partner organization, will oversee safety verification of the N2O reactors and contribute to basic research for developing international guidelines.
Environmental Impact And Importance
N2O, with a global warming potential approximately 300 times higher than CO2, underscores the urgency of reducing its emissions. The project aims to contribute to the early realization of carbon-neutral international maritime transport.
Recognition And Support
The project, in collaboration with ClassNK, has been selected by Japan’s New Energy and Industrial Technology Development Organization (NEDO) as part of the “Next-Generation Ship Development” initiative. This selection aligns with the goals set by the International Maritime Organization (IMO) to achieve net-zero greenhouse gas emissions from international marine transportation by around 2050.
Advancements In Alternative Fuel Technology
The development of technology to transition from conventional fossil fuels to alternative options like ammonia, which emits no CO2 when combusted, is crucial for achieving emission reduction targets. NYK’s recent contracts with Japan Engine Corporation, IHI Power Systems, and Nihon Shipyard signify progress in building the world’s first ammonia-fueled medium gas carrier (AFMGC) equipped with Japan-made engines.
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Source: offshore energy
