連載講座―カーボンフリーアンモニア燃焼の科学と技術IV
アンモニアを燃焼するガスタービン
2016 年 58 巻 186 号 p. 215-222
詳細
2016 年 58 巻 186 号 p. 215-222
Ammonia is a carbon-free fuel and one of the candidates of hydrogen carrier. R&D of a gas turbine firing ammonia is not new issue but there are not successful results for a long time. AIST carried out demonstration tests with the aim to show the potential of ammonia-fired power plant. 50kW class turbine system firing kerosene is selected as a base model. A standard combustor is replaced by a prototype combustor which enables a bi-fuel supply of kerosene and fuel gas. The gas turbine started firing kerosene and increased its electric power output. After achievement of stable power output, ammonia gas was started to be supplied and its flow rate increased gradually. Over 40kW power output was achieved by firing ammonia gas only and over 40kW power output was also achieved by co-firing methane and ammonia. Ammonia gas supply increases NOx in the exhaust gas dramatically. However NOx removal equipment can reduce NOx successfully. The emission of NO and unburnt ammonia depends on the combustor inlet temperature.
