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저자정보
(부산대학교) (한국기계연구원) (부산대학교) (부산대학교) (한국동서발전) (부산대학교)
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한국연소학회 한국연소학회지 한국연소학회지 제25권 제4호
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    초록·키워드

    The flame structure and combustion characteristics of co-firing coal and LPG with different sizes of biomass were investigated in a dual swirl pulverized coal burner by using a high-speed camera with bandpass filter and PIV system. Three sizes of spent mushroom compost (<45, 45~90, 90~150 ㎛) were cofired with pulverized coal (45~90 ㎛) at a blending ratio of 20%. When the biomass of the same size with coal was used, the turbulence intensity had the highest uniformity while other cases exhibited locally strong turbulent intensity. The combustion using <45 ㎛ biomass was terminated early compared to other conditions, whereas the reaction region was the widest for 45~90 ㎛ biomass. The flame had uniform turbulent intensity with wide and strong reaction when the biomass size was equal to that of coal. When using 45~90 ㎛ of biomass, high velocity was maintained in the overall region and CH<SUP>*</SUP> radical was observed in a wide region with the highest radical intensity.

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      UCI(KEPA) : I410-ECN-0101-2021-431-001435448