Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1994-05-27
1995-10-24
Thorpe, Timothy S.
Power plants
Combustion products used as motive fluid
Combustion products generator
60753, F23R 340
Patent
active
054600022
ABSTRACT:
Carbon monoxide and unburned hydrocarbon burnout in gas turbine combustors is promoted by a combustor liner having a plurality of vortex generating members or ridges formed therein. The liner includes a substrate having an inner surface and a thermal barrier coating disposed on the inner surface. The vortex generating ridges are formed in the thermal barrier coating and extend transverse to the mean direction of flow through the liner. The thermal barrier coating is capped with a catalytic material which enhances carbon monoxide and unburned hydrocarbon oxidation. The ridges are defined by raised portions of the catalytic material and are of sufficient height to cause mixing between the hot flame products and the cool incompletely-burned flow along the liner wall. Alternatively, the ridges can be defined by forming corrugations in the substrate and disposing a uniform catalytically-active thermal barrier coating over the corrugated substrate.
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General Electric Company
Scanlon Patrick R.
Thorpe Timothy S.
Webb II Paul R.
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