Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2006-08-29
2006-08-29
Rodriguez, William H. (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S723000, C060S039822, C060S748000
Reexamination Certificate
active
07096671
ABSTRACT:
Aspects according to the invention relate to a catalytic combustor system for a turbine engine and an associated method. Catalytic combustors are used in connection with turbine engines because they can minimize the formation of oxides of nitrogen during combustion. Despite this emissions advantage, catalytic combustion systems can increase the level of CO in the turbine exhaust. According to aspects of the invention, vortex formation devices includes vortex generators, swirlers and mixers can be placed downstream of each catalytic module surrounding the pilot nozzle so as to form one or more vortices in the otherwise substantially laminar flow exiting the modules. The vortices can create a suction so that a portion of the flow exiting the pilot nozzles is mixed with the flow exiting the catalyst modules. The introduction of the higher temperature pilot flow can accelerate the catalytic reaction time, promoting burnout of the CO formed during combustion.
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California Energy Commiccion, “Durability of Catalytic Combustion Systems,” Consultant Report, Mar. 2002.
Bandaru Ramarao V.
Battaglioli John
Bland Robert
Rodriguez William H.
Siemens Westinghouse Power Corporation
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