Coanda - injection system for axially staged low emission of combustion chambers

摘要

The low emission - combustion chamber (12) comprises a combustion chamber housing (20), comprising a combustion chamber (17) with a plurality of combustion zones (34, 42) defines. A flame tube - sleeve (24) is in the combustion enclosure (20), whereby a gap (44) between the flame tube - sleeve (24) and the combustion chamber housing (20) is designed. A secondary nozzle (28) along a center line (30) of the combustion chamber (17) is arranged and designed for this purpose, a first fluid, the air, fuel, at least one diluent, or combinations thereof, in a downstream side (32) of a first combustion zone (34) of said plurality of the combustion zones (34, 42) to inject. A plurality of primary fuel nozzles (36) is adjacent the upstream side (38) of the combustion chamber (17) and around the secondary nozzle (28) and designed for this purpose, a second, air and fuel comprehensive fluid in an upstream side (38) of the first combustion zone (34) to inject. The combustion chamber (12) also comprises a plurality of tertiary coanda - nozzles (40). Each tertiary coanda - nozzle is connected with a corresponding mixing opening. The tertiary coanda - nozzles (40) are designed for this purpose, a third, air, at least one other diluent, fuel, or combinations thereof, comprehensive fluid in one or more remaining combustion zones of the plurality of the combustion zones (34, 42) to inject.