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반탄화 및 혼합비율 조건별 폐바이오매스 연료 특성 연구

A Study on the Characteristics of Waste Biomass Fuel by the Conditions of Torrefaction and Biomass Mixing Ratio

  • 조은지 (인천대학교 환경에너지공학과) ;
  • 진용균 (인천대학교 환경에너지공학과) ;
  • 현완수 (인천대학교 환경에너지공학과) ;
  • 한현구 (인천대학교 환경에너지공학과) ;
  • 민선웅 (인천대학교 환경에너지공학과) ;
  • 여운호 (인천대학교 환경에너지공학과)
  • Jo, Eun-Ji (Department of Environmental and Energy Engineering, Incheon National University(INU)) ;
  • Jin, Yong-Gyun (Department of Environmental and Energy Engineering, Incheon National University(INU)) ;
  • Hyeon, Wan-Su (Department of Environmental and Energy Engineering, Incheon National University(INU)) ;
  • Han, Hyun-Goo (Department of Environmental and Energy Engineering, Incheon National University(INU)) ;
  • Min, Seon-Ung (Department of Environmental and Energy Engineering, Incheon National University(INU)) ;
  • Yeo, Woon-Ho (Department of Environmental and Energy Engineering, Incheon National University(INU))
  • 투고 : 2018.03.09
  • 심사 : 2018.06.13
  • 발행 : 2018.06.30

초록

본 연구에서는 하수슬러지의 연료화를 위하여 반탄화 생성물을 분석하였다. 혼합시료는 하수슬러지 함량을 50%로 고정하고, 왕겨와 커피박의 함량을 50%로 조절하여 제조하였다. 반탄화 실험에서 반응 시간(30min, 60min)과 온도($200^{\circ}C$, $250^{\circ}C$, $300^{\circ}C$)를 SF(Severity Factor)를 이용하여 단일변수로 나타내었다. 연구 결과 반탄화 조건인 SF가 증가할수록 발열량과 연료비가 증가하였으며, 연소성지수는 감소하는 것을 확인하였다. 혼합시료의 발열량은 커피박(CR)과 반탄화 조건(SF) 모두의 영향을 받는 것으로 나타났으며, 연료비 범위는 SF가 6.19보다 낮은 경우 갈탄의 연료비 범위(0.5~1.0)와 유사하나 SF가 7.36보다 큰 경우 저도역청탄의 연료비 범위(1.0~1.8)와 유사한 것을 확인하였다. 연소성지수는 커피박보다는 왕겨가 더 함유될수록 낮은 조건의 SF에서 안정 범위(3,000~5,500kcal/kg)의 값을 나타내는 것으로 확인되었다.

In this study, the analysis of torrefaction products was carried out for fueling of sewage sludge. The mixed samples were composed as follows : 50% of sewage sludge and 50% of rice husk and CR(Coffee Residue). In this experiment, the reaction time(30min, 60min) and temperature($200^{\circ}C$, $250^{\circ}C$, $300^{\circ}C$) were expressed as a single variable using SF(Severity Factor). As a result, it was confirmed that as the SF increased, the heating value and fuel ratio increased, but the CI(Combustibility Index) decreased. The heating value was similarly increased as CR(Coffee Residue) and SF increased. The fuel ratio range of mixed samples was equal to that of lignite(0.5~1.0) in case of SF lower than 6.19 and that of bituminous coal(1.0~1.8) in case of SF higher than 7.36 or above. The CI showed a stable range(3,000~5,500kcal/kg) in low SF as the content of mixed samples contained more rice husk than CR.

키워드

참고문헌

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