| 摘要 |
PURPOSE: A carbon dioxide collecting system is provided to improve the efficiency and stability of a molten carbonate fuel cell and to minimize the power and device scale required to collect carbon dioxide. CONSTITUTION: A carbon dioxide collecting system comprises a molten carbonate fuel cell (110), a pure oxygen catalytic oxidizer (120), a heat collector (130), a gas-liquid separator (140), a carbon dioxide reservoir (150), and a flow rate controller (160). The molten carbonate fuel cell comprises an air electrode and a fuel electrode. The air electrode supplies flue gas exhausted from a power generating plant. The fuel electrode supplies hydrogen gas. The pure oxygen catalytic oxidizer combusts the exhaust gas of the fuel electrode in order to concentrate carbon dioxide and converts the exhaust gas into carbon dioxide and water. The heat collector collects heat from the pure oxygen catalytic oxidizer. The gas-liquid separator separates moisture from the exhaust gas and collects carbon dioxide. The flow rate controller is in connection with the carbon dioxide reservoir and supplies a part of carbon dioxide to the pure oxygen catalytic oxidizer in order to control the temperature of the pure oxygen catalytic oxidizer. [Reference numerals] (111) Fuel electrode; (112) Air electrode; (113) Matrix; (120) Pure oxygen catalytic oxidizer; (140) Gas-liquid separator; (150) Carbon dioxide reservoir; (160) Flow rate controller; (170) Pure oxygen supplier; (AA) Hydrogen gas; (BB) Flue gas; (CC,DD) Pure oxygen; (EE) Heat collector; (FF) CO2 recirculation; (GG) CO2 collection |
