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US 6,450,799 B1Granted
Coherent jet system using liquid fuel flame shroud
AssigneePraxair Technology, Inc.
InventorsWilliam John Mahoney, John Erling Anderson
Life of this patent
Estimating the term…
Abstract
A method and apparatus for establishing one or more coherent jets from a lance wherein liquid fuel is provided into a recession on the lance face along with motive gas, and is used to generate a flame shroud to maintain jet coherency.
Claims15
A method for producing a coherent gas jet comprising:
- (A) passing at least one gas jet from at least one nozzle into an injection volume, said nozzle(s) housed in a lance having a lance face and communicating with the injection volume at the lance face;
- (B) passing liquid fuel into a recession on the lance face, said recession being around the nozzle(s);
- (C) passing motive gas into the recession, creating a flow of liquid fuel within the recession, atomizing the liquid fuel, and passing atomized liquid fuel out from the recession into the injection volume annularly to the gas jet(s);
- and
- (D) passing oxidant into the injection volume and combusting the oxidant with atomized liquid fuel to produce a flame shroud around the gas jet(s).
2 more elements
A coherent jet lance apparatus comprising:
- (A) a lance having a lance face and having a least one nozzle having an opening at the lance face;
- (B) a recession on the lance face around the nozzle opening(s);
- (C) means for providing liquid fuel into the recession, and means for providing motive gas into the recession to atomize liquid fuel within the recession;
- and
- (D) means for passing oxidant from the lance positioned radially outward of the recession.
2 more elements
Dependencies are inferred from the claim text.