OXYGEN-ENRICHED COMBUSTION TUBULAR FLAME BURNER AND MATERIAL HEATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an oxygen-enriched combustion tubular flame burner in which occurrence of oscillatory burning or attached flame is restricted.SOLUTION: This invention relates to an oxygen-enriched combustion tubular flame burner for igniting fuel gas under a condition that a concentration of total oxygen fed into a combustion chamber R is 60% or more and forming tubular flame. An oxidant gas feeding port 31 is a slit-like opening extending in a direction in parallel with a tube axis C acting as a central axis of the combustion chamber R, and when it is defined that a side where a closing end is positioned with regard to the direction in parallel with the tube axis C is an upstream side [-X side] and a side where an opening end is positioned is a downstream side [+X side], an end part 32u at the upstream side of a fuel gas feeding inlet 32 is positioned at a more downstream side than an end part 31u of the upstream side of the oxidant gas feeding port 31.SELECTED DRAWING: Figure 4