| 摘要 |
PROBLEM TO BE SOLVED: To provide a tubular flame burner that can further reduce NOx while properly holding flame, and to provide a heating furnace including the same.SOLUTION: The tubular flame burner includes combustion condition control means C for bringing an air ratio related to swirl primary combustion into a fuel excessive-rich state of 0.7 or less.SELECTED DRAWING: Figure 1 |
