Chiyoda Corporation

Masato Shiraga

Kenichi Imagawa

Hironori Kawai

Osamu Ikeda

Yoshimi Okada

Yusuke Nakajima

Tatsuo Ishiyama

Tomohiko Shirasaki

To reduce the emission of carbon dioxide and improve the energy efficiency in a hydrogen supply system. The hydrogen supply system () comprises: a reformer () for performing steam reforming of a hydrocarbon; a shift reaction unit () for producing a gas containing hydrogen and carbon dioxide by causing a water gas shift reaction of a gas obtained from the reformer; a first absorber () for absorbing the carbon dioxide contained in the gas obtained from the shift reaction unit in an absorption liquid; a hydrogenation reaction unit () for producing a hydrogenated aromatic compound by causing a hydrogenation reaction of an aromatic compound with a gas that has passed through the first absorber; and a regenerator () for separating the carbon dioxide from the absorption liquid by re-circulating the absorption liquid from the first absorber and heating the absorption liquid with heat generated from the hydrogenation reaction.

Systems and methods for producing hydrogen from a hydrocarbon and using the produced hydrogen in a hydrogenation reaction

The energy is minimized that is required to lower the concentration of the high boiling point components (containing the poisoning substance for the dehydrogenation catalyst) contained in the hydrogenated aromatic compound produced by the hydrogenation of an aromatic compound. The hydrogenation system () for an aromatic compound comprises a hydrogenation reaction unit () for adding hydrogen to an aromatic compound by a hydrogenation reaction to produce a hydrogenated aromatic compound, a first separation unit () for separating a gas and a liquid component from a product of the hydrogenation reaction unit while maintaining a temperature of the product generally higher than a boiling point of the hydrogenated aromatic compound, and a second separation unit () for separating the hydrogenated aromatic compound from the gas component separated by the first separation unit.

Hydrogenation system for aromatic compound, hydrogen storage and transportation system equipped with same, and process for hydrogenation of aromatic compound

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Kanagawa, Japan

Masato Shiraga