Fuel-burner method and apparatus

Patent · Tue Aug 24 00:00:00 EDT 1993

OSTI ID:6255647

Yap, L T

A method is described of burning fuel comprising: burning a stream of the fuel in two stages and in the presence of first and second oxygen-containing gases, respectively; the second oxygen-containing gas having a higher concentration of oxygen than the first oxygen-containing gas; the fuel stream being burned in a first of the two stages at a first equivalence ratio of sufficiently greater than about 1.0 so that thermal NO[sub x] formation is inhibited and a combustible mixture comprising unburned and partially oxidized fuel and fuel fragments and radicals is produced for combustion in a second of the two stages; and the combustible mixture being burned in the second of the two stages at an equivalence ratio of about 1.0 so that maximum heat is transferred to the first of the two stages to stabilize the combustion therein and the fuel radicals are oxidized at a sufficiently rapid rate by the second oxygen containing gas to inhibit formation of prompt NO[sub x].

• Assignee: BOC Group, Inc., New Providence, NJ (United States)
• Patent Number(s): US 5238396; A
• Application Number: PPN: US 7-900400
• OSTI ID: 6255647
• Resource Relation: Patent File Date: 18 Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
FUELS
STAGED COMBUSTION
NITROGEN OXIDES
AIR POLLUTION ABATEMENT
BURNERS
COMBUSTION KINETICS
CONCENTRATION RATIO
HEAT TRANSFER
OXYGEN
RADICALS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
ELEMENTS
ENERGY TRANSFER
KINETICS
NITROGEN COMPOUNDS
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
REACTION KINETICS
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)