DUAL STAGE-DUAL MODE LOW NOX COMBUSTER

摘要

51TR 2342 IMPROVED DUAL STAGE-DUAL MODE LOW NOx COMBUSTOR An improved dual stage-dual mode combustor capable of reduced emissions of nitrogen oxide from a combustion turbine is disclosed. The combustor includes two combustion chambers separated by a throat region. Fuel is initially introduced and ignited in the first chamber. Thereafter, fuel is introduced near the downstream end of the first chamber for ignition and burning in the second chamber and after termination of the flame in the first chamber, fuel is reintroduced into the first chamber for premixing only with burning in the second chamber. by selectively controlling the percentage of fuel introduced into the first stage, low emissions of nitrogen oxide are realized.