F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
110/24
F23D 1/00 (2006.01)
Patent
CA 1283579
ABSTRACT OF THE DISCLOSURE A pulverized coal combustion apparatus comprises a burner through which pulverized coal and carrier air are passed to be burnt in a combustion chamber, and a flame retainer disposed at an end of the burner. The flame retainer includes a flared tube and an annular plate, which plate has a plurality of radial inwards projecting parts equiangularly spaced from each other. The annular plate comprises a plurality of ceramic piece and a plurality of fastener elements, both of which are arranged and assembled alternately to form the annular plate. The ceramic piece is so shaped that it project radial inwards to serve as the projecting part when assembled. The ceramic piece has at opposite sides thereof smoothly curved edge surfaces, and the fastener element has at opposite sides thereof smoothly curved edge surfaces which are engaged with the curved edge surfaces of neighboring two ceramic pieces.
579470
Masai Tadahisa
Morita Shigeki
Nakashita Shigeto
Okada Osamu
Tominaga Shigeru
Babcock-Hitachi Kabushiki Kaisha
Gowling Lafleur Henderson Llp
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