Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Fuel characteristics of Yellow Poplar bio-oil by catalytic pyrolysis

촉매열분해를 이용한 백합나무 바이오오일의 연료 특성

  • Chea, Kwang-Seok (Department of wood chemistry & microbiology, National Institute of Forest Science) ;
  • Jeong, Han-Seob (Department of wood chemistry & microbiology, National Institute of Forest Science) ;
  • Ahn, Byoung-Jun (Department of wood chemistry & microbiology, National Institute of Forest Science) ;
  • Lee, Jae-Jung (Department of wood chemistry & microbiology, National Institute of Forest Science) ;
  • Ju, Young-Min (Department of wood chemistry & microbiology, National Institute of Forest Science) ;
  • Lee, Soo-Min (Department of wood chemistry & microbiology, National Institute of Forest Science)
  • 채광석 (국립산림과학원 화학미생물과) ;
  • 정한섭 (국립산림과학원 화학미생물과) ;
  • 안병준 (국립산림과학원 화학미생물과) ;
  • 이재정 (국립산림과학원 화학미생물과) ;
  • 주영민 (국립산림과학원 화학미생물과) ;
  • 이수민 (국립산림과학원 화학미생물과)
  • Received : 2016.10.11
  • Accepted : 2017.03.20
  • Published : 2017.03.30
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Abstract

Bio-oil has attracted considerable interest as one of the promising renewable energy resources because it can be used as a feedstock in conventional petroleum refineries for the production of high value chemicals or next-generation hydrocarbon fuels. Zeolites have been shown to effectively promote cracking reactions during pyrolysis resulting in highly deoxygenated and hydrocarbon-rich compounds and stable pyrolysis oil products. In this study, catalytic pyrolysis was applied to upgrade bio-oil from yellow poplar and then fuel characteristics of upgraded bio-oil was investigated. Yellow Poplar(500 g) which ground 0.3~1.4 mm was processed into bio-oil by catalytic pyrolysis for 1.64 seconds at $465^{\circ}C$ with Control, Blaccoal, Whitecoal, ZeoliteY and ZSM-5. Under the catalyst conditions, bio-oil productions decreased from 54.0%(Control) to 51.4 ~ 53.5%, except 56.2%(Blackcoal). HHV(High heating value) of upgraded bio-oil was more lower than crude bio-oil while the water content increased from 37.4% to 37.4 ~ 45.2%. But the other properties were improved significantly. Under the upgrading conditions, ash and TAN(Total Acid Number) is decrease and particularly important as transportation fuel, the viscosity of bio-oil decreased from 6,933 cP(Control) to 2,578 ~ 4,627 cP. In addition, ZeoliteY was most effective on producing aromatic hydrocarbons and decreasing of from the catalytic pyrolysis.

바이오오일은 고품질 화학물질로 이용이 가능하며 차세대 탄화수소 연료와 석유정제업 공급원료로 사용할 수 있기 때문에 촉망받는 신재생에너지의 하나로 상당한 관심을 받고 있다. 또한 제올라이트는 급속열분해 과정에서 크래킹 반응을 효과적으로 촉진시켜 탈산소 반응을 증가 시키고 탄화수소가 많은 안정된 바이오오일을 만든다. 그래서 본 연구에서는 백합나무 바이오오일 품질개선을 위해 촉매열분해(Control, Blackcoal, Whitecoal, ZeoliteY 및 ZSM-5)를 적용하여 특성을 조사하였다. 바이오오일의 특성 변화를 알아보기 위하여 0.3~1.4 mm 크기의 백합나무 시료 500 g을 $465^{\circ}C$에서 1.6초 동안 촉매열분해하여 바이오오일을 제조하였다. 촉매 조건 상태에서 바이오오일의 수율은 Control(54.0%)과 비교하여 Blackcoal(56.2%)를 제외하면, Whitecoal(53.5%), ZeoliteY (51.4%), 및 ZSM-5(52.0%)로 모두 감소했다. 수분 함량이 Control(37.4%)에서 촉매 처리후 37.4~45.2%로 증가함에 따라 발열량((High heating value)은 감소했다. 그러나 다른 다른 바이오오일 특성은 개선되었다. 촉매 적용 결과 바이오오일의 회분과 전산가(TAN)가 감소했고, 특히 수송연료로 중요한 특성인 점도는 Control cP(6,933) 에서 2,578 ~ 4,627 cP로 감소했다. 또한 ZeoliteY는 방향족탄화수소를 생산하고 점도를 개선시키는데 가장 효과적이였다.

Keywords

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