On July 21, Japan’s New Energy and Industrial Technology Development Organization, Kawasaki Heavy Industries, and Obayashi Pharmaceutical jointly developed the “micromix developed by Kawasaki Heavy Industries in the “Hydrogen Society Building Technology Development Project”. In May, we started technology demonstration testing of dry low-pollution combustion of pure hydrogen fuel using “combustion” technology and announced that this is the world’s first successful technology case.
Pure hydrogen fuel dry low NOx emission combustion gas turbine demonstration test power plant
Kawasaki Heavy Industries said that it successfully carried out a pure hydrogen fuel (100%) dry low NOx emission
Dry low NOx gas turbine technology demonstration test and announced that this is the world’s first successful technology.
The technology demonstration project of the new hydrogen combustion system can provide electricity and heat to the surrounding plants. Kawasaki Heavy Industries said that the performance verification of the system will continue, including the stability of hydrogen combustion, power generation efficiency and low pollution emissions.
Dry low NOx hydrogen-fired gas turbine and “micro-mixed combustion” technology
Kawasaki Heavy Industries also stated that in the conventional water injection method (also known as the wet low pollution control method), water is sprayed to the high temperature part of the flame to suppress NOx emissions, but the power generation efficiency is reduced due to the evaporation of water. On the other hand, compared with the water injection method, the dry combustion method has higher power generation efficiency and can reduce NOx emissions, but hydrogen fuel combustion has a very high flame propagation speed, and how to stabilize combustion while suppressing flame backflow is its key technical issue.
To solve this problem, Kawasaki Heavy Industries has developed the world’s first dry low-NOx hydrogen-fired gas turbine by utilizing “micro-mixed combustion,” a combustion technology that uses tiny hydrogen flames. Testing of this technology verification prototype began as early as May this year. At the same time, Kawasaki Heavy Industries also combined this hydrogen-fired gas turbine with a waste heat boiler to form a cogeneration system that can provide approximately 1,100 kW of electricity and approximately 2,800 kW of heat energy to nearby public facilities through steam or hot water.
Kawasaki Heavy Industries also stated that the verification test will be conducted intermittently until the end of 2020. In addition to verifying the performance of the pure hydrogen dry combustion method, it is also important to evaluate the feasibility of this business by comprehensively managing hydrogen fuel and optimizing the heat and electricity of the entire energy system.
Dalin Pharmaceutical is also working with Osaka University and Kansai University in Japan to study a cold and heat system that can effectively utilize -253°C liquid hydrogen. By using vaporized liquefied hydrogen to cool the air intake of the gas turbine, the power generation capacity and efficiency are improved in the summer when electricity demand is high. NEDO is promoting Japan’s “Hydrogen Society Building Technology Development Project” as part of its efforts to realize a hydrogen society.
