Patent ID: 9496567
Filing Date: 2016-11-15
CPC Classification: H01M,Y02B,Y02E

Claim Text:
1. A method utilizing recirculation for a high temperature fuel cell system, which method performs anode side recirculation flow of reactants, and accomplishes a recycle ratio about 70% or more for a recirculation flow volume, the method comprising: feeding to the recirculation flow volume a feed-in flow, which includes an oxygen content, the feed-in flow being about 30% or less of an entire flow volume; performing heat exchanging to provide substantially reduced temperature conditions in the recirculation flow; performing catalytic partial oxidation in the recirculation flow to produce an amount of hydrogen for the recirculation flow in fuel cell system during start-up or shutdown situations; and exhausting about 30% or less of the entire flow volume from the anode side recirculation, wherein the heat exchanging provides an inlet temperature of about 350° C. to about 500° C. to the catalytic partial oxidation and an outlet temperature which does not exceed about 800° C.