FUEL CELL SYSTEM

摘要

A fuel cell system comprising hydrogen production unit (20) including reforming section (1) in which a hydrogen-enriched gas is produced, shift reaction section (2) in which hydrogen and carbon dioxide are produced from water and carbon monoxide contained in the hydrogen-enriched gas, and carbon monoxide removing section (3) for reducing the amount of carbon monoxide not having been removed in the shift reaction section (2) and remaining in the hydrogen-enriched gas; fuel cell (4) in which electricity generation is carried out with the hydrogen-enriched gas fed from the hydrogen production unit (20) and an oxidizer gas; air feeding sections (6,9) for feeding air to at least one portion (2) between the fuel cell (4) and the carbon monoxide removing section (3), or (1) upstream of the reforming section (1) on the basis of the direction of flow of fuel gas; and impurity removing means (12,13) for removing any impurity gas contained in the air.