FREAパンフレット（英語）

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3003504004505003035404550020406080水素割合％（熱量）熱効率％エンジン排気温度℃ Keep exhaust gas temperature by controlling combustion phasingHigher hydrogen fraction improves thermal efficiencyThermal efficiency %Hydrogen fraction % (Heat value)De-NOx catalystGas turbineLoading equipment9P.6P.10P.12P.14P.16Hydrogen Energy Carrier TeamWind Power TeamPhotovoltaic Power TeamGeothermal Energy TeamShallow Geothermal and Hydrogeology TeamEnergy Network TeamP.10P.12P.14P.16Wind Power TeamPhotovoltaic Power TeamGeothermal Energy TeamShallow Geothermal andHydrogeologyTeamP.6Energy Network TeamFig. 3: Ammonia gas turbineFig. 2: Thermal eciency and exhaust gas temperature as a function of the hydrogen ratio of the next-generation cogeneration engineFig. 1: Hydrogenation and dehydrogenation cycle of MCHAlkaline water electrolyzerLarge storage tanksHydrogen Energy Carrier Production/Utilization SystemAdvanced Cogeneration EngineOne of the largest demonstration systems of MCH production and utilization technologies in the world. This system integrates the alkaline water electrolyzer, catalytic hydrogenation reactor, large storage tanks, and cogeneration engine with the catalytic dehydrogenation reactor.Activities and Achievements1) Evaluation of catalytic performance of organic chemical hydride (Fig. 1)Products and by-products have been quantitatively measured by using a catalyst evaluation apparatus with an on-line GC. Currently developing a design guideline for the production process of organic chemical hydrides and collecting data for standardization in the future market. Recently obtained fundamental data for the dynamic optimization of hydrogenation and dehydrogenation processes.2) Unied demonstration system of hydrogen energy carrier production/utilizationOne of the world’s largest demonstration systems for hydrogen energy carrier production and utilization was launched. The alkaline water electrolyzer in this system successfully converted 30 MWh of electricity to hydrogen (equivalent to 3000 days of ordinary home electricity consumption), and a new simulator capable of predicting the performance of the electrolyzer has been constructed. In addition, this demonstration system has been incorporated into FREA’s energy network and we will propose a strategy for electricity storage and utilization.3) Advanced cogeneration engine using H2 from MCH (Fig. 2)Development is underway on a next-generation cogeneration engine with a dehydrogenation catalytic reactor of MCH that can recover the exhaust heat from engines. The world’s best hydrogen generation from MCH is realized by enhancing the recovery of heat such as the elevated temperature of engine exhaust. In terms of engine combustion technology for dual fuel (hydrogen and diesel), high thermal eciency exceeding 40% and high exhaust temperature were achieved. While the exhaust temperature usually drops at high eciency, the MCH could be decomposed by retaining the high exhaust temperature. In addition, ecient and clean combustion technologies are improved by maintaining a higher exhaust temperature for dehydrogenation of MCH. 4) Development of internal combustion engine ring ammonia (Fig. 3)This team is collaborating with Tohoku University on technology research for the direct combustion of ammonia. Work has been done on a micro gas turbine (rated power: 50 kW), and 41.8 kW power generation was successfully achieved by burning methane-ammonia gas or 100% ammonia. These are world-leading research results. In terms of nitrogen oxide (NOx) emission, the gas turbine fueled with ammonia emits less than 25 ppm of NOx by using NOx removal equipment. This emission level meets the standard of the Ministry for the Environment of Japan.*This research and development is being conducted under the Cross-Ministerial Strategic Innovation Promotion Program (SIP) “Energy Carrier” of the Cabinet Oce (management corporation: JST). SpecicationsHydrogen generation capability by alkaline water electrolysis: 34 Nm3/hHydrogenation to toluene: 70 L/h (MCH production capacity)MCH storage capacity: 20 kL (conversion to power generation: about 10 MWh)Cogeneration output (electric power and heat): power 60 kW and heat 35 kWHydrogen Separation TowerOxygen Separation TowerTolueneMCH