OXYGEN-ENRICHED COMBUSTION TUBULAR FLAME BURNER AND MATERIAL HEATING APPARATUS

• Main Authors: KEGASA AKISHI, SHIRAGAMI YOSUKE, HORI TSUKASA, TANAKA DAIKI, HISAKADO YOSHINORI
• Format: Patent
• Language: English; Japanese
• Published: 05.01.2017
• Subjects: BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

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 【課題】振動燃焼や付着火炎の発生が抑制された酸素富化燃焼管状火炎バーナを提供する。【解決手段】燃焼室Ｒに導入される総括の酸素の濃度が６０％以上の状態で燃料ガスを燃焼させて管状の火炎を形成する酸素富化燃焼管状火炎バーナであって、酸化剤ガス導入口３１は、燃焼室Ｒの中心軸である筒軸Ｃに平行な方向に延びるスリット状の開口であり、筒軸Ｃに平行な方向に関して閉塞端が位置する側を上流側（−Ｘ側）、開口端が位置する側を下流側（＋Ｘ側）とし、燃料ガス導入口３２の上流側の端部３２ｕが、酸化剤ガス導入口３１の上流側の端部３１ｕよりも下流側に位置する。【選択図】図４