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http://dx.doi.org/10.7842/kigas.2021.25.6.22

Combustion Characteristics and On-site Performance Test of a Double-cone Partial Premixed Nozzle with Various Fuel hole Patterns  

Kim, Han Seok (Korea Institute of Machinery & Materials)
Cho, Ju Hyeong (Korea Institute of Machinery & Materials)
Kim, Min Kuk (Korea Institute of Machinery & Materials)
Hwang, Jeongjae (Korea Institute of Machinery & Materials)
Lee, Won June (Korea Institute of Machinery & Materials)
Min, Kyungwook (Korea Institute of Machinery & Materials)
Kang, Do Won (Korea Institute of Machinery & Materials)
Publication Information
Journal of the Korean Institute of Gas / v.25, no.6, 2021 , pp. 22-28 More about this Journal
Abstract
Combustion characteristics were examined experimentally for a swirl-stabilized double cone premixed burner nozzle used for industrial gas turbines for power generation. An original model and a variant with a different fuel injection pattern are tested to compare their combustion characteristics such as NOx, CO and stability in pressurized conditions with single burner-flame and in an ambient multi-flame conditions with multi-burners. Test results show that NOx emissions are smaller for the variant, whose number of fuel holes is reduced with the same total area of fuel holes, in ambient and pressurized single-flame conditions with single burner, which results from enhanced fuel/air mixing due to a higher penetration of fuel into the air stream. The multi-burnerflame test results show that NOx emissions are smaller for the variant due to reduced flame interactions, which, on the contrary, slightly reduces the stability margin. On-site test results fromin an actual power plants also show that NOx emissions are reduced for the variant, compared with the original one, which is in agreement with the lab test results stated above.
Keywords
double cone typepartial premixed nozzlecombustor; partial pre-mixed combustor; gas turbine combustor; pressure effect; multi-flame interaction; fuel hole patterns; fuel penetration; fuel/air mixing;
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  • Reference
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