Patent ID: 8257873
Filing Date: 2012-09-04
Classification: B01J,C01B,H01M,Y02E,Y02T

Abstract:
1. An operating method of a fuel cell power generation system, comprising the steps of: closing, when a process for stopping the system is performed, (i) a first valve provided on a first raw material gas supply passage for supplying a raw material gas, which contains an organic compound formed of at least carbon and hydrogen, to a reformer that generates a hydrogen rich fuel gas from the organic compound and water vapor, and (ii) a second valve provided downstream of a carbon monoxide decreasing unit that decreases a carbon monoxide in the hydrogen rich fuel gas generated by the reformer to supply the hydrogen rich fuel gas to a fuel cell; and supplying, with the carbon monoxide decreasing unit communicating with the reformer, the raw material gas to a closed space, which is closed by the first valve and the second valve and includes a fuel treatment device that comprises the reformer and the carbon monoxide decreasing unit, through a second raw material gas supply passage for supplying the raw material gas to a middle portion of the carbon monoxide decreasing unit.