Recuperative burner

Patent · Tue Jun 12 04:00:00 EDT 1984

OSTI ID:6193281

Gitman, G M

A pair of burner tubes are arranged in concentric relationship. Fuel and air in a rich fuel-air ratio is provided to the central burner tube, and fuel and air in a lean fuel-air ratio is provided to the outer burner tube. The rich combination of fuel and air is partially burned at a temperature of about 2,500/sup 0/ F. while the lean combination of fuel and air is burned at a temperature of less than 2,800/sup 0/ F., and the flames from the burner tubes are mixed at the ends of the burner tubes to form a final flame envelope and to finish the combustion of the rich mixture. Exhaust gas is directed about the burner tubes, and combustion supply air is circulated about and preheated by the exhaust gas conduits and the outer burner tube. The separate combustion of the rich and lean fuel-air mixtures at relatively low temperatures and the subsequent mixing of the flames from the burner tubes results in low NO /SUB x/ emissions and results in high luminosity of the final flame envelope.

• Assignee: The Cadre Corporation
• Patent Number(s): US 4453913
• OSTI ID: 6193281
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR POLLUTION ABATEMENT
BURNERS
COMBUSTION CHAMBERS
COMBUSTION CONTROL
COMBUSTION PROPERTIES
CONTROL
DESIGN
ENERGY SYSTEMS
EXHAUST GASES
FLAMMABILITY
FLUIDS
FUEL-AIR RATIO
FUELS
GAS FUELS
GASEOUS WASTES
GASES
HEATING SYSTEMS
PH VALUE
POLLUTION ABATEMENT
VERY HIGH TEMPERATURE
WASTES