NOVELTY - A carbon dioxide recovery system has a molten carbonate fuel cell (110) having air electrode (112) and fuel electrode (111), a pure-oxygen catalytic oxidizer (120) for burning exhaust gas of fuel electrode and converting the exhaust gas into carbon dioxide and water, a heat recovery device (130), a gas-liquid separator (140) for separating water fraction in exhaust gas and recovering carbon dioxide, a carbon dioxide storage tank (150) and a flow adjuster (160) for supplying portion of recovered carbon dioxide to catalytic oxidizer.    USE - Carbon dioxide recovery system.    ADVANTAGE - The carbon dioxide recovery system has improved economical efficiency and stability. The temperature management of catalyst oxidizer is effectively carried out. The recirculation rate of carbon dioxide is improved.    DETAILED DESCRIPTION - A carbon dioxide recovery system has a molten carbonate fuel cell having an air electrode to which a flue gas exhausted from power station is supplied, and a fuel electrode to which hydrogen gas is supplied, a pure-oxygen catalytic oxidizer for burning exhaust gas of fuel electrode, concentrating carbon dioxide and converting the exhaust gas into carbon dioxide and water, a heat recovery device for recovering heat generated in oxidizer, a gas-liquid separator for separating water fraction in exhaust gas and recovering carbon dioxide, a carbon dioxide storage tank connected to gas-liquid separator and storing recovered carbon dioxide, and a flow adjuster connected to storage tank and supplying portion of recovered carbon dioxide to catalytic oxidizer for the purpose of temperature control in catalytic oxidizer.    DESCRIPTION OF DRAWING(S) - The drawing shows the conceptual diagram of carbon dioxide recovery system. (Drawing includes non-English language text)    Molten carbonate fuel cell (110)    Fuel electrode (111)    Air electrode (112)    Pure-oxygen catalytic oxidizer (120)    Heat recovery device (130)    Gas-liquid separator (140)    Carbon dioxide storage tank (150)    Flow adjuster (160)