• 제목/요약/키워드: 목질??

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기포 유동층 반응기내 목질계 바이오매스의 급속열분해 특성 (THE FAST PYROLYSIS CHARACTERISTICS OF LIGNOCELLULOSIC BIOMASS IN A BUBBLING FLUIDIZED BED REACTOR)

  • 최항석
    • 한국전산유체공학회지
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    • 제16권2호
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    • pp.94-101
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    • 2011
  • The fast pyrolysis characteristics of lignocellulosic biomass are investigated for a bubbling fluidized bed reactor by means of computational fluid dynamics (CFD). To simulate multiphase reacting flows for gases and solids, an Eulerian-Eulerian approach is applied. Attention is paid for the primary and secondary reactions affected by gas-solid flow field. From the result, it is scrutinized that fast pyrolysis reaction is promoted by chaotic bubbling motion of the multiphase flow enhancing the mixing of solid particles. In particular, vortical flow motions around gas bubbles play an important role for solid mixing and consequent fast pyrolysis reaction. Discussion is made for the time-averaged pyrolysis reaction rates together with time-averaged flow quantities which show peculiar characteristics according to local transverse location in a bubbling fluidized bed reactor.

목질계 건축물 자재의 방염 성능 비교 평가

  • 채학병;안병권;최용묵;정국삼;원정훈
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 2013년도 춘계학술대회 초록집
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    • pp.105-106
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    • 2013
  • 본 연구에서는 현재 사용되고 있는 대표적인 목질계 건축 재료를 대상으로 소방방재청 고시에 근거한 $45^{\circ}$연소성 실험을 실시하여 대상 실험 재료들의 방염 성능을 비교 평가 하였다. 실험결과, 잔진시간은 일반합판에서 높게 나타났고, 잔염시간은 OSB보드(Oriented Strand Board)에서 높게 나타난 것으로 분석되었다. 탄화면적과 탄화길이는 OSB보드와 중질 섬유판 보드(Medium Denstity Fiberboard)에서 높게 측정 되었으며, 6종류의 실험 제품들 모두 탄화면적과 탄화길이에서 기준치를 만족 못하는 것으로 평가 되었다.

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KMU001 조효소에 의한 목질계 바이오매스, 볏짚의 효소당화성에 관한 연구 (Enzymatic saccharification of rice straw, a lignocellulosic biomass by the extracellular enzyme from KMU001)

  • 김영숙;이영민;차창준;윤정준
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2008년도 춘계학술대회 논문집
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    • pp.225-228
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    • 2008
  • This study shows that lignocellulosic biomass saccharification work has been carried out with rice-straw by the extracellular enzyme from KMU001, and the enzymes produced in 5%(w/v) wood biomass were characterized by protein and various enzyme activity measurements. Several cellulases such as Endoglucanase(EG), $\beta$-D-1,4-Glucosidase(BGL), Cellobiohydrolase(CBH), and $\beta$-D-1,4-Xylanase (BXL) were detected. Saccharification of rice-straw by the enzyme yielded about 233mg/g of glucose after 48hrs.

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