Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Characteristics of Pyrolysis Oils from Saccharina japonica in an Auger Reactor

Auger 반응기에서 제조한 다시마 유래 열분해오일의 특성

  • Choi, Jae-Wook (School of Chemical and Biological Engineering, Seoul National University) ;
  • Son, Deokwon (Clean Energy Research Center, Korea Institute of Science and Technology) ;
  • Suh, Dong Jin (Clean Energy Research Center, Korea Institute of Science and Technology) ;
  • Kim, Hwayong (School of Chemical and Biological Engineering, Seoul National University) ;
  • Lee, Youn-Woo (School of Chemical and Biological Engineering, Seoul National University)
  • 최재욱 (서울대학교 화학생물공학부) ;
  • 손덕원 (한국과학기술연구원 청정에너지연구센터) ;
  • 서동진 (한국과학기술연구원 청정에너지연구센터) ;
  • 김화용 (서울대학교 화학생물공학부) ;
  • 이윤우 (서울대학교 화학생물공학부)
  • Received : 2017.11.02
  • Accepted : 2017.11.13
  • Published : 2018.03.30
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Abstract

Pyrolysis of Saccharina japonica in an Auger reactor was conducted by varying the temperature and the auger speed and then physicochemical properties of the S. japonica-derived pyrolysis oil were analyzed. The maximum yield of S. japonica-derived pyrolysis oil (32 wt%) was obtained at a pyrolysis temperature of $412^{\circ}C$ and an auger speed of 20 rpm. Due to low carbon content and high oxygen content in the pyrolysis oil, the higher heating value of S. japonica-derived pyrolysis oil was $23.6MJ\;kg^{-1}$, which was about 60% that of conventional hydrocarbon fuels. By GC/MS analysis, 1,4-Anhydro-d-galactitol, dianhydromannitol, 1-hydroxy 2-propanone and isosorbide were identified as the main chemical compounds of S. japonica-derived pyrolysis oil. The bio-char has low higher heating value ($13.0MJ\;kg^{-1}$) due to low carbon content and high oxygen content and contains a large amount of inorganic components and sulfur.

오거 반응기를 이용하여 해조류 바이오매스인 다시마로부터 열분해 오일 제조 실험을 수행하였으며, 열분해 오일의 물리화학적 특성을 살펴보았다. 주요 공정 변수인 열분해 온도 및 오거 컨베이어 속도의 최적 조건은 각각 $412^{\circ}C$, 20 rpm이었으며, 이 때 열분해 오일의 최대 수율은 32 wt%이었다. 낮은 탄소 함량 및 높은 산소 함량으로 인해, 다시마 유래 열분해 오일의 발열량($23.6MJ\;kg^{-1}$)은 기존 화석연료의 약 60% 이었다. 열분해 오일의 GC/MS 분석 결과, 1,4-Anhydro-d-galactitol, dianhydromannitol, 1-hydroxy 2-propanone, isosorbide 등이 주요 화합물로 확인되었다. 촤는 탄소 함량이 낮고 산소함량이 높아 발열량($13.0MJ\;kg^{-1}$)이 낮으며 다량의 무기 성분 및 황을 포함하고 있는 것으로 확인되었다.

Keywords

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