Site items in: Content by Author Toshiyuki Suda

Creating Ammonia Value Chain for the Smooth Transition toward Carbon Neutrality

According to the IHI’s ‘Group Management Policies 2023’ announced this May, Clean Energy business represented by fuel ammonia and others is defined as Development-focus Business, which would drive our future growth in parallel with Aero Engines and Space business. Our aim is to build and enhance the value of our entire ammonia value chain by implementing direct ammonia utilization technology especially for power sector, preparing infrastructure for transportation and storage and also developing new technology for green ammonia production. In the session, IHI’s effort to implement total value chain of ammonia is introduced, especially to use ammonia in thermal power…

New Technology of the Ammonia Co-Firing with Pulverized Coal to Reduce the NOx Emission

Ammonia is recognized as the new energy carrier and it is expected to be introduced into the society in a short time, since the infrastructures related to the ammonia, such as the mass production, transportation and storage are already introduced to produce the fertilizer for the agriculture. There is one technical issue, to use the ammonia in the direct combustion as the fuel for the electric power generation. It is the increase of the NO concentration in the exhaust gas. Ammonia contains the large amount of the nitrogen, comparing with any other fuels that human being has ever treated. Nitrogen…

Performance of Ammonia/Natural Gas Co-Fired Gas Turbine with Two-Stage Combustor

Ammonia has several advantages as renewable energy career [1-3]. Regarding the manufacturing process, the Harbor-Bosch method is already established. For transportation, ammonia can easily be liquefied at room temperature. Therefore, both transportation and storage are much easier than in case of hydrogen. In utilization, ammonia is combustible and used as a carbon-free fuel. However, ammonia has different combustion characteristics from natural gas. For example, the nitrogen atom contained in ammonia molecule causes high NOx emission through fuel NOx mechanisms [3]. Laminar burning velocity of ammonia is much lower; it might increase unburnt ammonia emission and cause unstable operation of gas…