Patent ID: 6260491
Filing Date: 2001-07-17
Classification: F23D

Abstract:
A nozzle for feeding a combustion maintaining medium into a furnace at high temperature conditions, said nozzle comprising:a tiltable nozzle tip, at least partly protruding into the furnace; andfeeding means for feeding the combustion maintaining medium from a source of the medium to said tiltable nozzle tip,said tiltable nozzle tip including:(i) a mainly open-ended outer shell, including a first end wall portion in flow connection with said feeding means and a second end wall portion protruding into the furnace, said second end wall portion having an interior side and an exterior side;(ii) an air cooling zone formed on the interior side of at least a portion of said second end wall portion of said outer shell, and providing an air flow along the interior side;(iii) a shroud being disposed on said tiltable nozzle tip, said shroud including a shroud wall portion disposed to cover at least a portion of the first end wall portion of said outer shell; and(iv) an air shroud channel, formed between said shroud wall portion of said shroud and the first end wall portion of said outer shell, for discharging from said air shroud channel an air shroud flow which is guided along the exterior side of the second end wall portion of said outer shell.