Improvement of Environmental Record of the Stationary Gas Turbines Run in Russia Through Combustors Update

Abstract

Some results of the NPP “EST” activities on improvement of the environmental record of the stationary gas turbines, viz.GTG-1500, FRAME 5, GTN-16, which are in use nowadays in Russia, are presented. Toxic emissions reduction is achieved through combustors update. The technique of directed dosed air blow-in into the maximum fire temperature zones allows to reduce the NOx emissions to 70–130 mg/Nm3 (converted to NO2 at 15% O2 concentration) via minimal combustor design modifications. Lower NOx emissions, amounting to 15–25 mg/Nm3, can be produced through combustion of lean premixed air and fuel in the 4-burner low-toxic module. When retrofitting the GTN-16 unit combustor, the standard dome was replaced with 20 such modules.