抄録
In order to reduce the emission of carbon dioxide, an increase of the role that nuclear power plants and renewable energy power plants bear is predictable. Fossil fuelled power plants will have to compensate fluctuation of electric demands with fewer composition ratios. To meet conditions that future fossil fuelled power plants will be expected to have, we have focused on oxygen blown semi-closed MCFC-GT hybrid system and attempted to construct a system that can maintain high efficiency on wide load rates. Two bypass lines that bypass MCFC anode and turbine were set. Net efficiency on rated output marked 65.4%. By dividing operation method into four depending on the load rate, the system was able to maintain an efficiency of over 58% (net thermal, HHV) on load rate 100〜25% and the system was operable up to load rate of 3.2%. The carbon dioxides that are discharged from the plant will be easy to collect, for it was of high purity.
