Coanda injection system for axially staged low emission combustors

Patent · Tue May 15 00:00:00 EDT 2012

OSTI ID:1043890

Evulet, Andrei Tristan ^[1]; Varatharajan, Balachandar ^[2]; Kraemer, Gilbert Otto ^[3]; ElKady, Ahmed Mostafa ^[4]; Lacy, Benjamin Paul ^[3]

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1. Clifton Park, NY
2. Cincinnati, OH
3. Greer, SC
4. Niskayuna, NY

The low emission combustor includes a combustor housing defining a combustion chamber having a plurality of combustion zones. A liner sleeve is disposed in the combustion housing with a gap formed between the liner sleeve and the combustor housing. A secondary nozzle is disposed along a centerline of the combustion chamber and configured to inject a first fluid comprising air, at least one diluent, fuel, or combinations thereof to a downstream side of a first combustion zone among the plurality of combustion zones. A plurality of primary fuel nozzles is disposed proximate to an upstream side of the combustion chamber and located around the secondary nozzle and configured to inject a second fluid comprising air and fuel to an upstream side of the first combustion zone. The combustor also includes a plurality of tertiary coanda nozzles. Each tertiary coanda nozzle is coupled to a respective dilution hole. The tertiary coanda nozzles are configured to inject a third fluid comprising air, at least one other diluent, fuel, or combinations thereof to one or more remaining combustion zones among the plurality of combustion zones.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-05NT42643
• Assignee: General Electric Company (Niskayuna, NY)
• Patent Number(s): 8,176,739
• Application Number: 12/175,050
• OSTI ID: 1043890
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING