F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
53/44, 39/64
F27D 3/18 (2006.01) C21B 5/00 (2006.01)
Patent
CA 1210248
ABSTRACT OF THE DISCLOSURE A method for injecting a pulverized fuel into a blast furnace uses a pulverulent fuel injecting burner which is protruded into a blow pipe through a wall thereof near the tuyere of a blast furnace. The burner injects a pulverized fuel into the blast furnace along with a hot blast of air at a temperature higher than 950°C flowing through the blow pipe. The tip end of the burner is located at a distance L between 100 and 350 mm upstream from the boundary between the tuyere of the blast furnace and the blow pipe. According to one embodiment, the tip of the furner is tapered by an angle ? ? 1400L2 - 1290L + 295 . According to a second embodiment , the inner diameter B1 of the blow pipe, and the inner and outer diameters of the burner tip (d and D) are selected such that 0.1 ? (D/Bi) ? 0.25 and 0.6 ? (d/D) ? 0.8 . According to a third embodiment, the burner tip is removable.
424941
Hirose Ryoichi
Kasai Taketsugu
Komatsu Hiroyuki
Suzuki Tomio
Tamada Shinichi
Kabushiki Kaisha Kobe Seiko Sho
Riches Mckenzie & Herbert Llp
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