Method for optimizing operating efficiency of fossil fuel combustion power generation system

摘要

The present invention relates to an operating method for optimizing the operating efficiency of a fossil fuel combustion power generation system. The fossil fuel combustion power generation system (10, 10 ', 10 ", 10"') optionally including SCR (56) includes a burner area (16) in which combustion of fossil fuel and air is carried out to generate combustion gas, A first transfer surface 32 located below the burner area of the fossil fuel combustion steam generator 12, and bypasses 44, 58, 64 positioned around the first heat transfer surfaces 32, 32a; First and second flows formed from the burner region of the air preheater 14 and the fossil fuel combustion steam generator 12 located below the first heat transfer surfaces 32 and 32a to the air preheater 14 for combustion gases. A sensor 54 for detecting the passage, the temperature of the combustion gas discharged from the air preheater 14, and a sensor 56 for detecting the temperature of the gas flowing into the SCR 56 when the SCR 56 is mounted. ).