FUEL CELL SYSTEM

PROBLEM TO BE SOLVED: To accurately determine deterioration of a remover for removing a component to be removed in a raw fuel while suppressing cost increase of a fuel cell system.SOLUTION: A fuel cell system includes a removing device that has a removing agent disposed on the upstream side of a reformer and generating heat by reacting with oxygen and chemically reacts a component to be removed in a raw fuel in the presence of the removing agent to remove the component to be removed from the removing agent, an oxygen supply device that supplies oxygen to a gas inlet of the removing device, a temperature sensor that detects the temperature of the removing agent on the gas outlet side of the removing device, and a deterioration determination device that determines the deterioration of the removing agent of the removing device based on a detection value of the temperature sensor when oxygen is supplied from the oxygen supply device to the gas inlet of the removing device.SELECTED DRAWING: Figure 1 【課題】燃料電池システムのコストアップを抑制しつつ、原燃料中の除去対象成分を除去するための除去剤の劣化を精度よく判定可能にする。【解決手段】燃料電池システムは、改質器の上流側に配置されると共に酸素と反応して発熱する除去剤を有し、除去剤の存在下で原燃料中の除去対象成分を化学反応させて当該除去対象成分を当該除去剤に吸着させる除去装置と、除去装置のガス入口に酸素を供給する酸素供給装置と、除去装置のガス出口側で除去剤の温度を検出する温度センサと、酸素供給装置から除去装置のガス入口に酸素が供給された際の温度センサの検出値に基づいて除去装置の除去剤の劣化を判定する劣化判定装置とを含む。【選択図】図１