| 摘要 |
PURPOSE:To modify a fuel gas by using the exhaust heat of a fuel battery and the heat obtained through combustion of the uncombusted fuel gas exhausted as a heat source for heat-absorbing reactions. CONSTITUTION:The exhaust heat as surplus reaction heat produced at the time of discharging is emitted from the battery body 2 in the form of sensible heat using oxygen gas chiefly as the heat medium. This exhaust heat is supplied to the low-temp. modification reaction part 12 of a modifier device 10 and utilized as the modification reaction heat necessary to modify alcohols or hydrocarbons as crude fuel. The low-temp. modification reaction part 12 makes modifying reaction at 550-600 deg.C, and approx. 50% methane is modified and introduced to a high-temp. modification reaction part 13. Uncombusted fuel gas exhausted from the body 2 is combusted, and the heat is supplied to this high-temp. modification reaction part 13. If the fuel gas utilization of the body 2 is assumed to be 85%, the max. temp. attains 850-920 deg.C. The reaction heat in the reaction part 13 can be reduced to a great extent, as approx. 50% modification is finished in the reaction part 12, and the power generating efficiency is improved by approx. 5% of a conventional modifier. |
