The Needs for R&D of Ammonia Combustion Technology for Carbon Neutrality - Part Ⅱ R&D Trends and Technical Feasibility Analysis

Following the previously published Part 1, the Part 2 focuses on the basic combustion characteristics of fuel ammonia and research cases of applied combustion technology. In addition, we would like to review the items necessary for a large-scale demonstration of ammonia combustion technology. Most of the technologies for utilizing ammonia combustion are being carried out in Japan and are strongly promoted by policy. The results give a method of stabilizing flame and reducing nitrogen oxides when mixed burning of ammonia, and are applied to automobile engine, marine engine, gas turbine, coal-fired boiler, reheating furnace, and fuel cell. The co-burning rate, which is advantageous for stabilizing combustion and reducing nitrogen oxides, has been derived, and accordingly, the use of ammonia as a carbon-free fuel for the future is brightly expected.