Low emission combustion process and apparatus

Patent · Tue Aug 30 04:00:00 EDT 1977

OSTI ID:5350835

Zwick, E B

A process for forming low-emission combustion gases is described. A lean mixture of fuel and air provides a substantially homogeneous mixture within the combustion zone. The fuel is preferably vaporized and, alternatively, may be introduced into the burner as microscopic droplets. Combustion temperature is maintained below about 3,000/sup 0/F to reduce nitrogen oxides, and combustion is conducted under stable conditions which sufficiently exceed lean blowout to reduce formation of carbon monoxide and unburned hydrocarbons. The flow velocity into the burner is higher than the turbulent flame velocity. A dilution zone may be provided downstream from the combustion zone. To control performance, input air may be split into a first stream to the combustion zone and a second stream to the dilution zone. A quantity of water may be admixed with the fuel and be prevaporized to form water vapor containing fuel droplets. A method of operating a gas turbine with a burner operated as above, generating combustion gases to the turbine, is described. A burner for producting low emission exhaust gases has a combustion zone and a dilution zone with means to split air input into a first stream to the combustion zone and a second stream to the dilution zone.

• Assignee: TIC; ERA-03-018731; EDB-78-037852
• Patent Number(s): US 4044549
• OSTI ID: 5350835
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103 -- Internal Combustion Engines-- Turbine
330603* -- Vehicle Design Factors-- Engine System
330701 -- Emission Control-- Nitrogen Oxides
330702 -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
AIR POLLUTION ABATEMENT
AUTOMOBILES
BURNERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DESIGN
DROPLETS
EXHAUST GASES
FUEL-AIR RATIO
GAS COMBUSTION PROCESS
GAS TURBINES
GASEOUS WASTES
HYDROCARBONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION ABATEMENT
TURBINES
TURBOMACHINERY
VEHICLES
WASTES