To provide a fine particle blowing device which increases a flow speed of fine particle and efficiently blows the fine particle.
A combustion supporting fluid supply pipe 4 is mounted on an outer peripheral side of a fine particle supply pipe 3 to supplying the fine particle, for supplying the combustion supporting fluid for accelerating the combustion of fine particle, taper parts 3a, 4a are formed on tip parts of the fine particle supply pipe 3 an the combustion supporting fluid supply pipe 4 to gradually widen the combustion supporting fluid passage 12 in a clearance between the supply pipes 3, 4 toward the tip direction, and a throat part 7 having a comparatively narrow clearance is formed at a basic end side with respect to the taper parts 3a, 4a of the supply pipes 3, 4.
NAKABAYASHI HIROYUKI
KOBAYASHI NOBUAKI
WASHIMI FUMIHIRO
KIKUCHI YOSHITERU
NIPPON KOKAN KK
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