FUEL CELL POWER GENERATING DEVICE

PURPOSE:To effectively utilize heat of blow-down water by connecting the blow-down water circuit of a steam generator and a fuel gas circuit to a boosting mixer, and connecting the mixer circuit of the boosting mixer to a process steam circuit. CONSTITUTION:A blow-down water circuit L1 of blow-down water E is connected to a boosting mixer 7, and a fuel gas circuit L2, of fuel gas D is connected to the boosting mixer 7. The mixed gas circuit L3 of the boosting mixer 7 is connected to a process steam circuit L4 feeding the process steam C from a steam generator 5 to a fuel reformer 6. The boosting mixer 7 is constituted of an ejector. When the high-temperature, high-pressure blow-down water E is injected, the blow-down water E is diffused, decompressed, and converted into the vapor phase, and the fuel gas D is sucked. The mixed gas F mixed and boosted with the fuel gas D and moisture is fed to the fuel reformer 6 together with the steam C. The high-temperature blow-down water can be utilized without being discarded, and the power generating efficiency and high- temperature heat recovery percentage can be improved.