Carbon monoxide reduction device, carbon monoxide reduction method, hydrogen production device, and fuel cell power generation system

摘要

PPROBLEM TO BE SOLVED: To solve such a problem that, in fuel cell power generation, CO existing in a gas containing hydrogen as the major component acts as a poisoning component of a fuel electrode using a Pt-based catalyst; therefore, there is a conventional technique for reducing CO in gaseous hydrogen using CO selective oxidation reaction; however, when the temperature of the CO selective reaction is high, a by-product, such as CHSB4/SB, is formed, thus reducing hydrogen production efficiency. PSOLUTION: In a CO selective oxidation reactor 5, a temperature detector 6 for a catalyst layer consisting of a CO selective oxidation reaction catalyst filled into the CO selective oxidation reactor 5 for reducing CO in a reformed gas and a cooler 7 for cooling the catalyst layer are installed. When the temperature of the catalyst layer detected by the temperature detector 6 is higher than a temperature established beforehand, the cooler 7 operates and cools the CO selective oxidation reaction catalyst. PCOPYRIGHT: (C)2008,JPO&INPIT