A METHOD FOR OPTIMIZING THE OPERATING EFFICIENCY OF A FOSSIL-FIRED 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', which optionally includes an SCR 56, includes a burner area 16 in which combustion of fossil fuel and air is performed to generate combustion gas, and fossil fuel. A first heat transfer surface 32 located below the burner area of the combustion steam generator 12, bypasses 44, 58, 64 located around the first heat transfer surfaces 32, 32a, and combustion gas First and second flow passages formed from the burner area of the fossil fuel combustion steam generator 12 and the air preheater 14 to the air preheater 14 located below the first heat transfer surfaces 32 and 32a for A sensor 54 for detecting 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. do.