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. Ammonia combustion in the prototype bi-fuel combustor was enhanced by supplying hot combustion air and by modifying the air inlets. However, the exhaust gases from the ammonia flames had high NOx concentrations. NOx removal equipment using selective catalytic reduction can reduce NOx emission levels to below 10 ppm from more than 1,000 ppm (converted value of NOx to 16% O₂) as already reported. However, downsizing of NOx removal equipment should be achieved for practical use. Therefore, a low NOx combustor was developed. We modified the combustor to the rich-lean burning method and found the condition that the NO emission can be reduced to less than half, but the NOx emission reduction was insufficient as compared with the small-scale flow test at the lab scale. Therefore, each part of the combustor was redesigned so that mixing of fuel and air improves uniformity. Low-NOx combustor (Step2) was designed using knowledge of Prototype bi-fuel combustor for ammonia (Step0) and Low-NOx combustor (Step1). As a result, we found a condition that the NO emission can be reduced to 200ppm or less as compared with before redesigning for rich-lean combustion.

Japan decided the sixth Strategic Energy Plan that show 1% hydrogen/ammonia 1% hydrogen/ammonia will be positioned in power generation mix in FY2030. Ammonia is a hydrogen carrier and carbon free fuel. R&D project on gas turbine engines firing ammonia are carried on. AIST tried R&D of 50kW micro gas turbine firing ammonia. Combustor and fuel supply system were remodeled. Electric power generation firing Kerosene-ammonia / methane-ammonia / only ammonia was succeeded with low NOx emission by Selective Catalytic Reduction (SCR). Low NOx combustor was also developed by rich-lean staged combustion concept and reduce NOx emission level to 1/5 and succeeded to reduce size of SCR unit. Ammonia is transported and stored as liquified gas. In the case of ammonia gas supply system is necessary as ammonia vaporizer. Spray combustion R&D of liquid ammonia spray combustion technology for gas turbine combustor is also tried to simplify fuel system. R&D of technology to start up gas turbine using ammonia is also tried.

We introduce the showcase project to supply wind power-generated, low-carbon hydrogen to fuel cell forklifts. A system has been created for using electricity generated at the Yokohama City Wind Power Plant (Hama Wing) to electrolyze water to create low-carbon hydrogen, which is then compressed and stored. The hydrogen produced at the site will be transported in a hydrogen fueling truck to a fruit and vegetable market, a factory, and warehouses. The hydrogen will be used in fuel cells to power forklifts at these locations.

The creation of this hydrogen supply chain in cooperation with local partners is expected to reduce CO₂ emissions by at least 80 percent when compared with a supply chain using forklifts powered by gasoline or grid electricity. The goal of the project is to establish a hydrogen supply chain, analyze costs, and estimate potential CO₂ reductions that can be achieved with a full-scale supply chain in the future

第39回　日本エネルギー学会関西支部セミナー

第60回石炭科学会議 開催案内

第17回　微粒化セミナー

東北支部　2023年度講演会・見学会

新エネルギー・水素部会 第６回 新エネルギー・水素部会　シンポジウム 洋上での再生可能エネルギー発電の最前線

第11回アジアバイオマス科学会議（開催地：秋田）開催案内

第19回バイオマス科学会議開催案内

関西支部 「第68回研究発表会」発表募集

学生のための国際会議発表支援募集（2023年10月）

創立100周年記念誌発刊のご案内

日本エネルギー学会誌論文特集「重質油」論文募集のご案内

日本エネルギー学会誌論文特集「生活のエネルギー」論文募集のご案内

日本エネルギー学会誌論文特集「新エネルギー」論文募集のご案内

日本エネルギー学会誌論文特集「天然ガス」論文募集のご案内

In Japan and overseas, there is a rapid need to reduce the use of fossil fuels, and industrial gas turbines are being researched and developed to meet the needs of a wide variety of fuels. For hydrogen and ammonia in particular, the movement toward social implementation has been advanced to an unprecedented level. Although it takes time to build a fuel supply chain, it is based on multiple scenarios and is expected to be commercialized on a certain scale in 2030. In this paper, the correspondence of industrial gas turbine to carbon neutrality is introduced from the viewpoint of fuel conversion, and projects of ammonia direct combustion micro gas turbine and oxygen hydrogen combustion turbine which AIST is related to are also introduced.