BURNER AND COMBUSTION FURNACE
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Dec 27, 2022
filing date -
Dec 27, 2022
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Abstract
A burner includes: a first nozzle including a main fuel outlet that discharges a fuel-air mixture containing main fuel and primary combustion air and a flame holding plate around the outlet; and a second nozzle located coaxially with the first and including a secondary air outlet that emits secondary combustion air at an outer peripheral side of the main fuel outlet; and auxiliary fuel injection nozzles extending along an outer surface of the first nozzle in parallel with a burner axis. The auxiliary fuel injection nozzles include: auxiliary fuel outlets along an outer peripheral edge of the flame holding plate; or auxiliary fuel outlets inside the outer peripheral edge of the flame holding plate and outside an inner peripheral edge of the flame holding plate. The auxiliary fuel outlets discharge gas fuel as auxiliary fuel toward a boundary between flows of the fuel-air mixture and the secondary combustion air.
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