COMBUSTION METHOD OF GAS TURBINE COMBUSTION SYSTEM AND GAS TURBINE COMBUSTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a gas turbine combustion system capable of reducing generation of nitrogen oxide (NOx) due to nitrogen compounds contained in fuel gas.SOLUTION: An equivalence ratio is set to more than 1 in a combustion chamber of a combustion apparatus 4 performing stoichiometric ratio combustion to perform reduction combustion with fuel and pure oxygen, and is then set to 1 or less to supply pure oxygen to unburned fuel gas to burn the unburned fuel gas.