Pulverized coal combustion apparatus

Details Pulverized coal combustion apparatus Pulverized coal combustion apparatus

1988-10-05

1989-11-21

Yuen, Henry C.

Furnaces

Utilizing powdered fuel

110264, 110265, F23D 102

Patent

active

048814741

ABSTRACT:
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 radially inwardly projecting parts equiangularly spaced from each other. The annular plate comprises a plurality of ceramic pieces and a plurality of fastener elements, both of which are arranged and assembled alternately to form the annular plate. Each ceramic piece is so shaped that it projects radially inwardly 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.

REFERENCES:
patent: 4321034 (1982-03-01), Taccone
patent: 4333405 (1982-06-01), Michelfelder et al.
patent: 4422389 (1983-12-01), Schroden
patent: 4545307 (1985-10-01), Morita et al.
patent: 4602571 (1986-07-01), Chadshay
patent: 4726760 (1988-02-01), Skoog
patent: 4748919 (1988-06-01), Cawpobenedetto et al.

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