Roof-mounted oxygen-fuel burner for a glass melting furnace...

C - Chemistry – Metallurgy – 03 – B

Patent

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Details

C03B 5/00 (2006.01) C03B 5/04 (2006.01) C03B 5/225 (2006.01) C03B 5/235 (2006.01) F23C 5/02 (2006.01) F23D 14/22 (2006.01) F23D 14/32 (2006.01)

Patent

CA 2313234

According to the present invention there is provided a refractory lined glass melter for producing refined glass from raw glass-forming material using at least one oxygen-fuel burner recessed within a burner block mounted in the roof of the furnace and a process of using the burner. The velocities of the gaseous fuel and of the oxygen from the oxygen-fuel burner are controlled such that the velocities of the gaseous fuel and the oxygen are substantially equivalent to provide a generally laminar gaseous fuel and oxygen flow to combust proximate a top surface of the raw glass-forming material and produce a flame which impinges the surface of the raw glass-forming material and which has a middle portion of a columnar shape.

La présente invention concerne un four de fusion (10) de verre à revêtement réfractaire servant à produire du verre affiné à partir d'une matière brute vitrifiante (30) à l'aide d'au moins un brûleur (34) d'oxygène-combustible logé dans un bloc-brûleur (38) lui-même situé dans le plafond (22) du four (10). L'invention porte également sur un procédé d'utilisation du brûleur (34). Les vitesses du combustible gazeux et de l'oxygène provenant du brûleur (34) sont réglées de manière à être grosso modo équivalentes pour produire un flux de combustible gazeux et d'oxygène généralement laminaire. Ainsi, la combustion se fait à proximité de la surface supérieure de la matière vitrifiante (30) et produit une flamme qui vient en contact avec ladite surface et dont la zone centrale présente une forme de colonne.

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