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US 6,604,937 B1Granted
Coherent jet system with single ring flame envelope
AssigneePraxair Technology, Inc.
InventorWilliam John Mahoney
Life of this patent
Estimating the term…
Abstract
A coherent jet lance and operating method wherein the need for a lance extension is eliminated using a single ring of ports to deliver flame envelope gases around the primary gas jets to maintain the gas jets coherent.
Claims17
A method for establishing at least one coherent gas jet comprising:
- (A) passing at least one gas jet out from at least one nozzle housed in a lance having a lance face, said lance face having a ring of ports around the said at least one nozzle;
- (B) passing fuel out from a first set of ports of said ring and passing oxidant out from a second set of ports of said ring;
- and
- (C) combusting the fuel and the oxidant passed out from the first and second set of ports of said ring to produce a flame envelope around the said at least one gas jet.
1 more element
A coherent jet lance comprising:
- (A) a lance having a lance face and having at least one nozzle having an opening at the lance face;
- (B) a ring of ports on the lance face around the nozzle opening(s);
- and
- (C) means for providing fuel to a first set of ports of said ring and means for providing oxidant to a second set of ports of said ring;
- said first and second sets of ports oriented such that the fuel and oxidant form a flame envelope when passed out from the ports.
2 more elements
Dependencies are inferred from the claim text.