再生エネルギー研究センターパンフレット（英語）

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63003504004505003035404550020406080水素割合％（熱量）熱効率％エンジン排気温度℃ [Specification]Hydrogen generation capability by alkaline water electrolysis: 34 Nm3/hHydrogenation to toluene: 70 L/h (MCH production capability)MCH storage capacity: 20 kL (conversion into power generation: about 10 MWh)Co-generation output (electric power and heat): power 60 kW and heat 35 kWThe world largest class MCH production and utilization demonstration. This demonstration system integrates large scale alkaline water electrolyzer, catalytic hydrogenation reactor, large storage tanks, and co-generation engine with catalytic dehydrogenation reactor.Hydrogen Energy Carrier Production/Utilization SystemLarge scale alkaline water electrolyzerLarge tanksAdvanced Co-generation EngineHydrogen Separation TowerOxygen Separation TowerActivities and Achievements①Evaluation of catalytic performance of organic chemical hydride（Fig.1）　Over a hundred kinds of products and their concentration have been analyzed quantitatively by using a catalyst evaluation apparatus with an on-line GC. Developing a design guideline of a production process of organic chemical hydride and collecting data for standardization in the future market. At the moment, analyzing behaviors of products and by-products formation by circulating processes of hydrogenation and dehydrogenation.②Unified Demonstration System of Hydrogen Energy Carrier Production/Utilization　The world largest class hydrogen energy carrier production and utilization system was launched. This system integrates large scale alkaline water electrolyzer, catalytic hydrogenation reactor, large storage tanks, and co-generation engine with catalytic dehydrogenation reactor. 10 MWh of electricity (Equivalent to 1000 days of ordinary home electricity consumption) has been stored by hydrogen or MCH in the last one year. This system will be combined into the energy network in FREA to suggest a strategy for electricity storage and utilization.③Advanced Co-generation Engine by use of H2 from MCH（Fig.2）　The team is conducting research and development for the next-generation cogeneration engine with a dehydrogenation catalytic reactor of MCH which can recover engine exhaust heat. Also a dual fuel engine combustion technology of diesel and reformed hydrogen from MCH is being developed. The world’s best hydrogen generation from MCH is realized by enhancing the recovery of heat such as the elevated temperature of engine exhaust heat. In terms of an engine combustion technology with hydrogen, high thermal efficiency exceeding 40%, and high exhaust temperature were achieved. While the exhaust temperature usually drops at high efficiency, the MCH could be decomposed by retaining the high exhaust temperature.④Development of an internal combustion engine firing ammonia (Fig. 3)　For combustion use of ammonia, micro gas turbine (rated power: 50kW) combustion has been challenged, and 41.8kW power generation was successfully achieved by burning methane-ammonia gas or 100% ammonia. These are world's first research results.　This research and development is conducted under the Cross-ministerial Strategic Innovation Promotion Program (SIP) “Energy Carrier” of the Cabinet Office (management corporation: JST).TolueneMCHFig.1: Hydrogenation and dehydrogenation cycle of MCHFig.2: Thermal efficiency and exhaust gas temperature as a function of the hydrogen ratio of the next-generation cogeneration engineKeep exhaust gas temperature by controlling combustion phasingHigher hydrogen fraction improves thermal efficiencyThermal efficiency %Hydrogen fraction % (Heat value)Exhaust gas temperature ℃Fig.3: Ammonia Gas TurbineDe-NOx catalystGas turbineLoading equipment