LOW-NOX COMBUSTOR AND GAS TURBINE APPARATUS EMPLOYING SAID COMBUSTOR

摘要

A low-NOx combustor and gas turbine apparatus which,while using a fuel containing nitrogen components, suppressesthe rate at which these components are converted to NOx bymixing the air which supports combustion with a gas having anoxygen concentration which is lower than that of theatmosphere so that the oxygen level in the resulting airmixture is maintained between 13 and 17%, preferably between14 and 16%. In a gas turbine apparatus, the aforesaidoxygen-poor air mixture may be generated using the combustionexhaust gas from the turbine by installing a cooling deviceto reduce the temperature of the combustion exhaust gas fromthe turbine and supplying the cooled gas to the inlet of anair compressor, or by installing an exhaust gases compressoron the exhaust gas duct of the turbine and supplying thepressurized gas to the inlet of the combustor.