Flex-flame burner and combustion method

Patent · 24 August 2010

OSTI ID:1015774

Soupos, Vasilios ^[1]; Zelepouga, Serguei ^[2]; Rue, David M ^[1]; Abbasi, Hamid A ^[3]

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1. Chicago, IL
2. Hoffman Estates, IL
3. Naperville, IL

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.

• Research Organization: Gas Technology Institute (Des Plaines, IL)
• Sponsoring Organization: USDOE
• Assignee: Gas Technology Institute (Des Plaines, IL)
• Patent Number(s): 7,780,436
• Application Number: 11/141,765
• OSTI ID: 1015774
• Country of Publication: United States
• Language: English