Using mixture of ammonia and air to reduce no emission of mixed fuel in Northeastern University of J

　　According to foreign media, Tohoku University in Japan

　　University) has developed a new plan to reduce the emission of no produced by the combustion of ammonia fuel. The process plan is to confuse the gas and atmosphere to create a vortex as a tension part of the power generation process. The research will help to promote ammonia research and development and use it as alternative fuel for carbon based fuel for automobiles, aircraft and power generation methods.

　　Ammonia (NH3) is a compound containing one nitrogen atom and three hydrogen atoms. According to the current research and observation, there are many reasons why ammonia is used as alternative fuel. Compared with pure hydrogen, it contains hydrogen atoms, and the cost is relatively cheap and non flammable. It is used for transportation, with high safety. At present, the manufacturing methods have been established and are all ready-made, because ammonia is widely used in fertilizer.

　　At present, the mixture of ammonia with gasoline, diesel, hydrogen and methane can be regarded as a new fuel, aiming at reducing the proportion and emission of carbon based fuel and improving the atmospheric conditions. There is still a technical battle to use ammonia as a pure fuel source, which is due to the large amount of nitric oxide (no) produced during incineration

　　Oxide, no), the smell of the gas contaminates the situation

　　In addition, nitric oxide will also cause risks to human health and destroy the ozone layer in the atmosphere. When it is fed back with other compounds, it will cause acid rain or atmospheric warming

　　The research team of the Institute of fluid science, Northeastern University, Japan, used super computers to run large eddy simulations to illustrate the chemical elucidation of ammonia fuel under different incineration conditions, so as to determine the feasibility of low NO emission on its surface

　　The team explained the chemical change of the combustion chamber in which ammonia and atmosphere form a vortex under different pressure. The team compared the test result with the value of ammonia and atmosphere pre inclusion before entering the combustion chamber, and confirmed that under the premise of high fuel atmosphere ratio, the emission of nitrous oxide is low

　　The team found that after two streams of ammonia mixed with one stream of atmosphere, the no emission after incineration matched the value before the mixing. Innermost and outermost

　　The volume of the two streams of ammonia gas between swirlers is not uniform, which accounts for 40% and 60% of the injected fuel volume, resulting in a more symmetrical ratio of fuel and atmosphere in the combustion chamber, thus reducing the emission of No

　　However, the emission value is still higher than the emission limit of gas turbine in Japanese environmental protection laws and regulations. The research staff decided to conduct a new research, reduce the proportion of atmosphere in the incineration room, and further reduce the emission.

——Author：ebico