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Technology

Hydrogen Transportation Technology

Aiming to contribute to realizing a low-carbon society, Chiyoda is developing a technology to transport and store a large volume of hydrogen. Establishing a technology needed to reduce carbon dioxide emissions will eliminate the need to recover and dispose of carbon dioxide, making it possible to efficiently reduce carbon dioxide. Chiyoda is working hard to develop the organic chemical hydride method, which has excellent features for large-volume storage and transportation, with the aim of realizing a hydrogen supply chain concept using this method as a core technology.

Hydrogen Supply Chain Concept

Organic Chemical Hydride Method

By means of a hydrogenation reaction, by which hydrogen is chemically fixed to toluene, a major component of gasoline, hydrogen gas is converted into a liquid chemical (methylcyclohexane) with 1/500 the volume of the hydrogen gas, enabling storage and transportation at ambient temperature and pressure, like gasoline. In places where hydrogen is used, hydrogen is generated with a dehydrogenation reaction before use. Because it is easy to use existing infrastructure for gasoline storage and distribution, this technology can be introduced and disseminated at a minimal social cost. This technology makes it possible to store a large amount of hydrogen for a long time without hydrogen loss, enabling use for national stockpiling. In addition, the low ocean transportation cost allows hydrogen to be transported from anywhere in the world.

Advantages of the Hydrogen Supply Chain Concept

Instead of recovering and storing carbon dioxide generated when fossil fuels are burned, which would use Japan’s high-cost import energy, hydrogen gas is produced where carbon dioxide is stored and is then transported in large quantities. This can eliminate the need to use facilities to recover and dispose of carbon oxide and efficiently and significantly reduce carbon dioxide emissions. This is the Hydrogen Supply Chain Concept. This makes it possible to transport low-cost renewable energy produced overseas, energy produced by such means as wind power energy, solar energy, and hydro-energy, as well as nuclear energy using hydrogen as a carrier to anywhere in the world, which is a great advantage in expanding the use of renewable energy.