Combustion burner and combustion method thereof in furnace

Details Combustion burner and combustion method thereof in furnace Combustion burner and combustion method thereof in furnace

1997-02-06

1999-10-05

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431178, 431167, F23C 500

Patent

active

059613122

ABSTRACT:
A combustion burner comprises: an air supply passage for supplying an air to a heating furnace; a primary fuel nozzle for supplying a primary fuel to the air supply passage; secondary fuel nozzles arranged around the air supply port of the air supply passage; and the secondary fuel nozzles being arranged so that a distance L (mm) from an outer periphery of the air supply port to the outer periphery of the secondary fuel supply port is larger than the diameter Da (mm) of the air supply port. A combustion method comprises: injecting fuel substantially from the primary fuel nozzle when an infurnace temperature of the heating furnace is lower than a fuel ignition temperature; and injecting fuel substantially from the secondary fuel nozzle when an infurnace temperature of the heating furnace is higher than a fuel ignition temperature.

REFERENCES:
patent: 2847063 (1958-08-01), Reed et al.
patent: 3180395 (1965-04-01), Reed
patent: 4496306 (1985-01-01), Okigami et al.
patent: 4505666 (1985-03-01), Martin et al.
patent: 5195884 (1993-03-01), Schwartz et al.
patent: 5403181 (1995-04-01), Tanaka et al.
patent: 5441403 (1995-08-01), Tanaka et al.
patent: 5846067 (1998-12-01), Nishiyama et al.

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