石炭利用CO_2回収型水素製造技術 : ハイパーリング(<特集>日本における石炭利用技術の開発と商業化(II))

概要

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A project for developing a hydrogen production process, HyPr-RING (Hydrogen Production by Reaction Integrated Novel Gasification), started in 2000. This process is expected to have a higher cold gas efficiency as 75% for hydrogen production from coal with CO_2 recovery. The exothermic and the endothermic, and the gas production and the gas separation reactions are integrated in one gasifier, to produce hydrogen by one step without oxygen injection. Absorption of CO_2 by CaO (lime) to enhance CO shift reaction and consequently to raise the hydrogen concentration, is a key reaction in the reaction system. During passed years, thermodynamic and experimental studies were performed for understanding what happens in the gasifier when the reactions are integrated, and for finding suitable sorbents and conditions for capturing CO_2 and producing higher concentration hydrogen. We had built a continuous experiment reactor system containing feeding, solid-gas contacting, heating, pressure charge and gas-solid separation. It was found that H_2 was majour product gas with few CH_4. CO was completely shifted to H_2 and CO_2, and most of CO_2 and H_2S were fixed by lime sorbent.
一般社団法人日本エネルギー学会の論文
2003-12-20