Patent ID: 7749626
Filing Date: 2010-07-06
Classification: H01M,Y02E

Abstract:
1. A fuel cell power generating system for generating power by electrochemical reaction of hydrogen with oxygen, comprising: reforming means for producing a reformed gas containing hydrogen by a steam reforming reaction of a fuel; a first power generating means adjacently located to the reforming means whose temperature is maintained in a predetermined range, for generating power by electrochemical reaction of hydrogen or hydrogen and carbon monoxide in said reformed gas with oxygen and supplying waste heat required for said steam reforming reaction and recycling an emission containing steam resulting from said power generation to said reforming means, a flow control valve being controlled so as to reduce the amount of said waste heat if an amount of said reformed gas produced increases and so as to increase the amount of said waste heat if the amount of said reformed gas produced decreases; converting means for converting carbon monoxide in said reformed gas into carbon dioxide and hydrogen by reaction of said carbon monoxide with steam; oxidizing means for converting carbon monoxide ejected from said converting means into carbon dioxide by oxidation; and second power generating means for generating power by electrochemical reaction of hydrogen ejected from said oxidizing means with oxygen, wherein an anode exhaust gas containing unreacted hydrogen from the first power generating means is supplied to the second power generating means through said converting means and said oxidizing means, a flow control valve being controlled such that an amount of air supplied to said first power generating means is controlled so as to be decreased if an amount of said fuel supplied to the reforming means increases and so as to be increased if the amount of said fuel supplied decreases.