JP2003288936A5 - - Google Patents

Claims (5)

A fuel cell that generates electricity based on an electrochemical reaction between a fuel gas obtained by steam reforming a hydrocarbon-based raw fuel gas and air as an oxidant gas, a fuel reforming system, and a fuel cell In a fuel cell power generator having a cooling water system device and a recovered water system device for recovering water in the exhaust gas of the fuel cell and the combustion exhaust gas of the fuel reformer,
The recovered water system equipment includes a recovered water tank, a sprinkler provided in the upper part of the recovered water tank, a recovered water cooler, a liquid level gauge for detecting the liquid level in the recovered water tank, and the liquid level gauge A fuel cell power generator comprising a purified water supply container for supplying purified water based on a liquid level measurement result. 2. The fuel cell power generator according to claim 1, wherein the recovered water tank is a cooling water direct contact condenser between a sprinkler, an exhaust air inlet, and a combustion exhaust gas inlet in an upper part of the recovered water tank. fuel cell power generation apparatus characterized by comprising a packed bed of such Raschig rings.   3. The fuel cell power generator according to claim 1, wherein the recovered water tank includes an overflow pipe for discharging excess recovered water.   4. The method of operating a fuel cell power generator according to claim 1, wherein purified water is replenished during steady operation in which the liquid level measurement result of the liquid level gauge is higher than a predetermined level (L). The self-sustained operation with the recovered water is performed, and when the liquid level measurement result reaches the predetermined level (L), the purified water is supplied from the purified water supply container to the predetermined level (H) and the operation is continued. A method for operating a fuel cell power generator.   5. The operation method according to claim 4, wherein when the water self-sustained operation becomes impossible for some reason and the liquid level measurement result of the liquid level gauge reaches a predetermined lower limit level (LL), purification is performed. A method for operating a fuel cell power generator, comprising stopping water supply and stopping the operation of the fuel cell power generator.