| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner attaining NOx reduction.SOLUTION: A primary fuel nozzle 37 is provided on an axial line 100 of a throat 33. A flame holder 41 is disposed on the inner peripheral side of the throat 33 and around the primary fuel nozzle 37. A plurality of secondary fuel nozzles 52 is provided on the outer peripheral side of the supply throat 33 and in an annular region with the primary fuel nozzle 37 as a center, with mutual intervals. A secondary air nozzle 62 is provided on the annular region. The plurality of secondary air nozzles 62 and the plurality of secondary fuel nozzles 52 are alternately disposed.SELECTED DRAWING: Figure 1 |
