Patent ID: 6841280
Filing Date: 2005-01-11
Classification: C01B,H01M,Y02E

Abstract:
1. A fuel cell power plant comprising: a fuel cell stack comprising an anode chamber and a cathode chamber, the fuel cell stack generating power by a reaction of hydrogen supplied to the anode chamber and air supplied to the cathode chamber; a membrane hydrogen separator having a pre-separation side facing a reformate gas and a post-separation side, the membrane hydrogen separator allows hydrogen in the reformate gas to permeate from the pre-separation side to the post-separation side; a hydrogen supply passage which supplies hydrogen at the post-separation side of the membrane hydrogen separator to the anode chamber; an anode effluent recirculation passage which recirculates anode effluent discharged from the anode chamber to the post-separation side of the membrane hydrogen separator; an intake valve which introduces part of the air supplied to the cathode chamber to the anode effluent recirculation passage; and a discharge valve which discharges gas from the anode effluent recirculation passage.