Catalytic combustion of lean premixed mixture in catalytically stabilized thermal combustor

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This study aims to investigate surface catalytic reaction and flame combustion of lean premixed mixture in CST (catalytically stabilized thermal) combustor that consists of a catalyst bed and a thermal combustor. Two types of CST combustor, Pd catalyst (one stage) and Pd/Pt catalyst (two stages), were tested. After surface ignition, two systems showed different behaviors in the temperatures of the catalyst bed. The temperature of Pd catalyst system remained at almost the constant temperature, 780-790 degrees C, insensitive to the preheat temperature. However, the temperature of Pd/Pt catalyst increased steadily with the preheat temperature. Pd/Pt catalyst system had a lower preheat temperature for flame ignition in the thermal combustor than the Pd catalyst system. The lean flammability limit of CST combustor was also investigated. The lean combustion supported by surface catalytic reaction was more stable than flame combustion alone.
Publisher
GORDON BREACH SCI PUBL LTD
Issue Date
1999
Language
English
Article Type
Article
Keywords

GAS-TURBINE; METHANE; PALLADIUM

Citation

COMBUSTION SCIENCE AND TECHNOLOGY, v.145, no.1-6, pp.17 - 35

ISSN
0010-2202
URI
http://hdl.handle.net/10203/68286
Appears in Collection
ME-Journal Papers(저널논문)
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