Patent ID: 8066509

Claim:
A burner for operating a premix combustion system with one or more fuels, wherein the burner comprises a swirl generator ( 1 ) on a head side, a fuel feeder for feeding a fuel and a combustion air feeder for introducing combustion air (L) into the swirl generator ( 1 ), the fuel feeder comprising a first feeder ( 3 ), for feeding a liquid fuel (Bfl) and/or a gaseous fuel (Bg) along a burner axis (A), and a second feeder for feeding liquid fuel (Bfl) and/or gaseous fuel (Bg) along air inlet slots ( 4 ), which are tangentially delimited by the swirl generator ( 1 ), and are provided, downstream of the swirl generator ( 1 ), the burner further comprises a directly connected transition section ( 6 ) and a mixer tube ( 8 ), which is connected downstream to the transition section ( 6 ), the mixer tube ( 8 ) leads into a combustion chamber (B), the fuel feeder further comprising a third feeder ( 9 ) provided along the transition section ( 6 ) and/or downstream of the transition section ( 6 ) for feeding fuel which contains hydrogen, or consists of hydrogen, and a fourth feeder( 10 ) for feeding fuel which contains hydrogen, or consists of hydrogen, and/or a further gaseous fuel, the third ( 9 ) and fourth ( 10 ) feeders each comprise a multiplicity of discharge openings ( 9 ′, 10 ′), which are arranged and oriented, relative to each other, along the transition section ( 6 ) in such a way that over flowing of the third feeder ( 9 ) discharge openings ( 9 ′) by fuel that is discharged from the fourth feeder ( 10 ) does not occur.