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Title: Lean-rich axial stage combustion in a can-annular gas turbine engine

Patent ·
OSTI ID:1257245
;

An apparatus and method for lean/rich combustion in a gas turbine engine (10), which includes a combustor (12), a transition (14) and a combustor extender (16) that is positioned between the combustor (12) and the transition (14) to connect the combustor (12) to the transition (14). Openings (18) are formed along an outer surface (20) of the combustor extender (16). The gas turbine (10) also includes a fuel manifold (28) to extend along the outer surface (20) of the combustor extender (16), with fuel nozzles (30) to align with the respective openings (18). A method (200) for axial stage combustion in the gas turbine engine (10) is also presented.

Research Organization:
SIEMENS ENERGY, INC., Orlando, FL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42644
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL)
Patent Number(s):
9,366,443
Application Number:
13/739,316
OSTI ID:
1257245
Resource Relation:
Patent File Date: 2013 Jan 11
Country of Publication:
United States
Language:
English

References (9)

Combustion chamber for gas turbines patent March 1980
Watertube boiler and its method of combustion patent June 1991
Lean staged combustion assembly patent March 1992
Inspirated staged combustion burner patent December 1993
Premixing dry low nox emissions combustor with lean direct injection of gas fule patent February 2001
Injection methods to reduce nitrogen oxides emission from gas turbines combustors patent May 2006
Method and apparatus for staged combustion of air and fuel patent August 2010
Fuel Nozzle Assembly for Use in a Combustor of a Gas Turbine Engine patent-application March 2011
Air/Fuel Supply System for use in a Gas Turbine Engine patent-application December 2011

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