F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
F23D 14/78 (2006.01) F27D 99/00 (2010.01) F23D 14/22 (2006.01) F23D 14/32 (2006.01) F23D 14/76 (2006.01) F27D 23/00 (2006.01)
Patent
CA 2070971
An air-cooled oxygen-gas burner for use with a direct fired furnace. The burner comprises a body formed from three concentric metal tubes supported in a cylindri- cal housing secured about a conical bore in a refractory side wall of a furnace. The three concentric tubes have a cone shaped inner end which are adjustable to define a nozzle with annular openings therebetween of variable size to vary the shape of a flame produced by a mixture of combustible gas, oxygen and air fed under pressure, respectively, in each of two chambers defined between the three concentric metal tubes and a chamber defined between the tubes and the cylinder housing. The combustible gas is fed in the inner chamber, the oxygen in the inter- mediate chamber, while the air is fed in the outer chamber to cool the concentric tube assembly and the furnace refractory about the burner nozzle. The tube assembly can be retracted within the cylinder housing so that the nozzle is protected from the high heat within the furnace after the burner is shut off.
Brais Normand
Chouinard Jean-Guy
Gaz Metropolitain & Co. Limited And Partnership
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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