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Plasma Burner Enlarged by Coal Injection Into Microwave Plasma

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7 Author(s)
Yong Cheol Hong ; Convergence Plasma Res. Center, Nat. Fusion Res. Inst., Daejeon, South Korea ; Sang Ju Lee ; Dong Hun Shin ; Ye Jin Kim
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An apparatus for generating a flame and, more particularly, a microwave plasma burner for obtaining a large-volume high-temperature plasma flame are designed using a coal injection into the microwave plasma. The plasma burner was mainly composed of a coal feeder and a stainless steel tube, as the exit for the plasma flame, in series with a 2.45-GHz microwave plasma torch, in which a mixture of air and oxygen could immediately burn the powdered coal, with the help of a high atomic-oxygen density and the high-temperature plasma. In order to examine the possibility of implementing microwave plasma burners at power plants, a feasibility test was conducted using the coal plasma burner, with information obtained on the optical emission lines of the plasma torch, the coal plasma flames, the temperature profile along the axis of the flame, gas compositions at different coal-injection rates, etc.

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Plasma Science, IEEE Transactions on  (Volume:39 ,  Issue: 9 )