Skip to Content
Find More Like This
Return to Search

Flex-flame burner and combustion method

United States Patent

August 24, 2010
View the Complete Patent at the US Patent & Trademark Office
A combustion method and apparatus which produce a hybrid flame for heating metals and metal alloys, which hybrid flame has the characteristic of having an oxidant-lean portion proximate the metal or metal alloy and having an oxidant-rich portion disposed above the oxidant lean portion. This hybrid flame is produced by introducing fuel and primary combustion oxidant into the furnace chamber containing the metal or metal alloy in a substoichiometric ratio to produce a fuel-rich flame and by introducing a secondary combustion oxidant into the furnace chamber above the fuel-rich flame in a manner whereby mixing of the secondary combustion oxidant with the fuel-rich flame is delayed for a portion of the length of the flame.
Soupos; Vasilios (Chicago, IL), Zelepouga; Serguei (Hoffman Estates, IL), Rue; David M. (Chicago, IL), Abbasi; Hamid A. (Naperville, IL)
Gas Technology Institute (Des Plaines, IL)
11/ 141,765
June 1, 2005
The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract No. DE-FC36-01ID13903 awarded by the U.S. Department of Energy.