Combustion – Process of combustion or burner operation – In a porous body or bed – e.g. – surface combustion – etc.
Reexamination Certificate
2006-09-21
2008-12-23
Basichas, Alfred (Department: 3749)
Combustion
Process of combustion or burner operation
In a porous body or bed, e.g., surface combustion, etc.
C431S010000, C431S012000, C431S350000, C431S353000, C431S328000, C431S170000, C431S326000
Reexamination Certificate
active
07467942
ABSTRACT:
A device and a method for flame stabilization in a burner (10), includes a burner housing at least partially enclosing a burner volume, into which may be introduced via at least one fuel line, fuel, and via at least one air feed means, air, forming an air/fuel mixture spreading in a preferred flow direction, which may be ignited in a combustion chamber (11) connecting downstream of the burner housing to form a stationary flame (13). Upstream of the flame (13), a catalyst arrangement (1) is provided through which an air/pilot fuel mixture (4), separate from the air/fuel mixture, is flowable. The catalyst arrangement (1) has at least two catalyst stages which are located one behind the other in the through-flow direction, of which the catalyst stage (3) located upstream, the so-called POX-catalyst, is flow-washable by the air/pilot fuel mixture (4) with an air/pilot fuel mixture ratio λ<1, by which catalyst stage (3) the air/pilot fuel mixture (4) is partially oxidized, and of which catalyst stages the downstream catalyst stage (8), the so-called FOX-catalyst, is flow-washable by a leaned air/pilot fuel mixture (7) with a mixture ratio λ>1, by which the leaned air/pilot fuel mixture is completely oxidized forming an inert hot gas flow (9).
REFERENCES:
patent: 4459126 (1984-07-01), Krill et al.
patent: 5569020 (1996-10-01), Griffin et al.
patent: 5626017 (1997-05-01), Sattelmayer
patent: 5937632 (1999-08-01), Dobbeling et al.
patent: 6358040 (2002-03-01), Pfefferle et al.
patent: 6394791 (2002-05-01), Smith et al.
patent: 0321809 (1989-06-01), None
patent: 0694740 (1996-01-01), None
patent: WO93/25852 (1993-12-01), None
patent: WO03/072919 (2003-09-01), None
patent: WO2004/020905 (2004-03-01), None
patent: WO2004/094909 (2004-11-01), None
patent: WO2005/095855 (2005-10-01), None
Nguyen, O., et al., “The Effect of Discrete Pilot Hydrogen Dopant Injection on the Lean Blowout Performance of a Model Gas Turbine Combustor,” Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Jun. 7-10, 1999, pp. 1-6, The American Society of Mechnical Engineers, New York, NY, USA.
Search Report for German Patent App. No. 10 2004 041 794.6 (Aug. 30, 2004).
International Search Report for PCT Patent App. No. PCT/EP2005/051333 (Jul. 25, 2005).
International Examination Report for PCT Patent App. No. PCT/EP2005/051333 (Jun. 16, 2006).
Carroni Richard
Meeuwissen Thiemo
ALSTOM Technology Ltd.
Basichas Alfred
Cermak Adam J.
Cermak Kenealy & Vaidya LLP
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