Reduction of nitric oxide emissions from a combustor

Patent · Tue May 27 04:00:00 EDT 1980

OSTI ID:5510723

Craig, R A; Pritchard, H O

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
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103 -- Internal Combustion Engines-- Turbine
330701* -- Emission Control-- Nitrogen Oxides
AIR POLLUTION CONTROL
CHALCOGENIDES
COMBUSTION CHAMBERS
CONTROL
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
TURBOJET ENGINES
WASTES