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Title: Fuel combustion exhibiting low NO{sub x} and CO levels

Method and apparatus are disclosed for safely combusting a fuel in such a manner that very low levels of NO{sub x} and CO are produced. The apparatus comprises an inlet line containing a fuel and an inlet line containing an oxidant. Coupled to the fuel line and to the oxidant line is a mixing means for thoroughly mixing the fuel and the oxidant without combusting them. Coupled to the mixing means is a means for injecting the mixed fuel and oxidant, in the form of a large-scale fluid dynamic structure, into a combustion region. Coupled to the combustion region is a means for producing a periodic flow field within the combustion region to mix the fuel and the oxidant with ambient gases in order to lower the temperature of combustion. The means for producing a periodic flow field can be a pulse combustor, a rotating band, or a rotating cylinder within an acoustic chamber positioned upstream or downstream of the region of combustion. The mixing means can be a one-way flapper valve; a rotating cylinder; a rotating band having slots that expose open ends of said fuel inlet line and said oxidant inlet line simultaneously; or a set of coaxialmore » fuel annuli and oxidizer annuli. The means for producing a periodic flow field may or may not be in communication with an acoustic resonance. When employed, the acoustic resonance may be upstream or downstream of the region of combustion. 14 figs.« less
Inventors:
; ;
Issue Date:
OSTI Identifier:
264551
Assignee:
SNL; SCA: 421000; 540120; PA: EDB-96:121989; SN: 96001625900
Patent Number(s):
US 5,540,583/A/
Application Number:
PAN: 8-210,794
Contract Number:
AC04-76DP00789
Resource Relation:
Other Information: PBD: 30 Jul 1996
Research Org:
AT&T Corporation
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 54 ENVIRONMENTAL SCIENCES; PULSE COMBUSTORS; DESIGN; OPERATION; NITROGEN OXIDES; AIR POLLUTION ABATEMENT; CARBON MONOXIDE; OXIDIZERS; GAS INJECTION