HYDROGEN-CONTAINING FUEL COMBUSTOR AND LOW NOx OPERATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a gas turbine combustor capable of using a hydrogen-containing fuel of high combustion speed and performing low NOx combustion without degrading reliability of a burner. SOLUTION: A first fuel nozzle 301 supplying a fuel 51 for starting and the hydrogen-containing fuel 62a is disposed at the upstream of a combustion chamber 12, and a primary combustion area (area A) for producing a combustion gas of low oxygen concentration is formed by burning the fuel supplied from the first fuel nozzle 301 under a fuel excessively-rich condition. Then the hydrogen-containing fuel 62b is injected to the combustion chamber 12 by using a second fuel supply hole 12a from a second fuel nozzle 302 to form a reduction area (area B) for reducing NOx generated in the primary combustion area by oxidation reaction of hydrogen. In the last place, the air 102a for lean combustion is supplied to the combustion chamber 12 to form a secondary combustion area (area C) for burning an unburned fuel under a fuel lean condition. COPYRIGHT: (C)2011,JPO&INPIT