NOVELTY - An arrangement utilizing recirculation for high temperature fuel cell system, comprises an anode recycle blower (120) for accomplishing recycle ratio of greater than or equal to 70% for recirculation flow; a feeding port (122a, 122b); a heat exchanger (105a-105d) to provide low temperature conditions in the recirculation flow; a catalyst for performing catalytic partial oxidation in the recirculation flow to produce a high amount of hydrogen for the recirculation flow in fuel cell system start-up or shutdown situations; and a pipe (114).    USE - An arrangement utilizing recirculation for high temperature fuel cell system (claimed).    ADVANTAGE - Start-ups and shutdowns of the fuel cell system can be performed even without any external purge gases required, which brings significant cost and space savings and installation benefits.    DETAILED DESCRIPTION - An arrangement utilizing recirculation for high temperature fuel cell system, where each fuel cell in the fuel cell system comprises an anode side (100), a cathode side (102), and an electrolyte, and the fuel cell system comprises pipes (109) for performing anode side recirculation flow of reactants, comprises an anode recycle blower (120) for accomplishing recycle ratio of greater than or equal to 70% for the recirculation flow; a feeding port (122a, 122b) for feeding to the recirculation a feed-in flow comprising high oxygen content, where the feed-in flow is less than or equal to 30%; a heat exchanger (105a-105d) to provide low temperature conditions in the recirculation flow; a catalyst for performing catalytic partial oxidation in the recirculation flow to produce a substantially high amount of hydrogen for the recirculation flow in fuel cell system start-up or shutdown situations; and a pipe (114) for exhausting less than or equal to 30% of the entire flow from the anode side recirculation, where the heat exchanger and blower being arranged to provide inlet temperature of 350-500 degrees C to the catalyst while outlet temperature of the catalyst of not greater than 800 degrees C.    DESCRIPTION OF DRAWING(S) - The drawing is a flow diagram of the fuel cell system.    Anode side (100)    Cathode side (102)    Heat exchanger (105a-105d)    Pipes (109)    Pipe (114)    Anode recycle blower (120)    Feeding port (122a, 122b)