FREAパンフレット（英語）

8/26

H2 energy carrierproduction ElectrolysisElectrolysisStorage / TransportHydrogen stationFCVSmart houseEV【CHP application】Smart cityElectricity, Heat3H2+C6H5CH3⇔C6H11CH3N2+3H2⇔2NH3H2+CO2⇔HCO2H8Since renewable energy is unstable and/or highly depen-dent on the weather and location, the amount of electric power generated by renewable energy is also unstable. The production technologies for hydrogen energy carriers are water electrolysis technology for producing hydrogen using such unstable electric power, and chemical energy conver-sion technology for electrolyzed hydrogen using a catalyst. These technologies are necessary in order to introduce a large amount of renewable energy.Hydrogen Energy Carrier TeamProduction and utilization of hydrogen from renewable energyResearch TargetThe team has been developing technologies for storing and utilizing a large amount of renewable energy that will help solve several energy issues facing Japan.We have been developing technologies for converting renewable electricity into hydrogen or hydrogen energy carriers, which is utilized by generating electricity, heat, and hydrogen. These technologies are useful for stabilizing the power grid even when massive amounts of renewable energy are introduced in the future. The result will be the ecient use of a much greater amount of renewable energy regardless of the location and season.Research OutlineThe team has been developing a set of hydrogen technologies using electric power generated by uctuating renewable energy: hydrogen production by water electrolysis, chemical conversion to a hydrogen energy carrier, and utilization of hydrogen. Basic technologies such as production of hydrogen energy carriers and the catalysts, and hydrogen engines are applied to large-scale demonstration equipment, and the knowledge gained through the experiments will lead to technical breakthroughs:●Technologies for high-eciency production of hydrogen energy carriers (e.g. organic chemical hydride, ammonia, formic acid). We are developing high-eciency technologies for catalyst synthesis.*Methylcyclohexane (MCH): Organic compound containing 6wt% hydrogen, which is liquid at room temperature and atmospheric pressure. One liter of MCH can store 500 L of hydrogen gas.*Ammonia: Nitride containing 17wt% hydrogen, which is liqueed at room temperature and pressure of 0.86 MPa. One liter of liquid ammonia can store 1300 L of hydrogen gas.*Formic acid: Organic compound containing 4wt% hydrogen, which is liquid at room temperature and atmospheric pressure. Formic acid is produced by synthesizing carbon dioxide and hydrogen. One liter of formic acid can store 600 L of hydrogen gas.Main Research FacilitiesCatalytic hydrogenation and dehydrogenation reactions are analyzed by on-line gas chromatography. Simulated uctuating hydrogen derived from renewable energy can also be supplied.Hydrogen ow rate: 10,000 mL/min, toluene and MCH ow rate: 10 g/min●Technologies on the combustion of hydrogen or hydrogen energy carriers for cogeneration engines and gas turbines.●Demonstration of an integrated system of hydrogen production/utilizationA new system to optimize the storage and utilization of electric power generated by renewable energy will be proposed through this experiment.Hydrogenation/DehydrogenationReaction ApparatusExcessive operational experiment and multi-fuel engine combustion technology with hydrogen, diesel fuel, etc., using a 4-cylinder diesel engine (displacement: 5.2 L)Advanced Cogeneration Engine‒ Production and Utilization Technology for Hydrogen Energy Carrier ‒ee g - aStorageStorageHigh temp.exhaust gasHydrogen injection unitDehydrogenation reactorSupplied as fuelHydrogenMedium temp. exhaust gasToluene C6H5CH3MCH C6H11CH3C6H11CH3➡3H2+C6H5CH3