Reduction of nitric oxide emissions from a combustor
A turbojet combustor and method for controlling nitric oxide emissions is provided by employing successive combustion zones wherein after combustion of an initial portion of the fuel in a primary combustion zone, the combustion products of the primary zone are combined with the remaining portion of fuel and additional plenum air and burned in a secondary combustion zone under conditions that result in low nitric oxide emissions. Low nitric oxide emissions are achieved by a novel turbojet combustor arrangement which provides flame stability by allowing stable combustion, which usually result in large emissions of nitric oxide in a primary combustion zone, to be accompanied by low nitric oxide emissions resulting from controlled fuel-lean combustion, ignited by the emission products from the primary zone, in a secondary combustion zone at a lower combustion temperature resulting in low emissions of nitric oxide.
- Assignee:
- U S Of America NASA Administrator Of
- Patent Number(s):
- US 4204402
- OSTI ID:
- 5510723
- Resource Relation:
- Patent File Date: Filed date 8 Sep 1977; Other Information: PAT-APPL-831632
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NITROUS OXIDE
AIR POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
DESIGN
TURBOJET ENGINES
COMBUSTION CHAMBERS
EXHAUST GASES
CHALCOGENIDES
CONTROL
ENGINES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
WASTES
330701* - Emission Control- Nitrogen Oxides
330103 - Internal Combustion Engines- Turbine