Nitrogen oxide reduction by gaseous fuel injection in low temperature, overall fuel-lean flue gas

A process and apparatus for combustion of a solid carbonaceous material, for example coal, in which a mixture of the solid carbonaceous material and combustion air is injected into a combustion chamber and ignited, thereby forming a fuel-lean primary combustion zone. A gaseous fuel is injected into...

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Bibliographic Details
Main Authors HURA; HARJIT S, BREEN; BERNARD P
Format Patent
LanguageEnglish
Published 01.06.1999
Edition6
Subjects
AIR
AIR SUPPLY
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
DRAUGHT-INDUCING
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN
REGULATING OR CONTROLLING COMBUSTION
SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS
WEAPONS
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Summary:A process and apparatus for combustion of a solid carbonaceous material, for example coal, in which a mixture of the solid carbonaceous material and combustion air is injected into a combustion chamber and ignited, thereby forming a fuel-lean primary combustion zone. A gaseous fuel is injected into the combustion chamber in a region downstream of the primary combustion zone, thereby forming a fuel-lean secondary combustion zone. Temperature in the secondary combustion zone is in the range of about 1800 DEG F. to 2400 DEG F.
Bibliography:Application Number: US19970908824