Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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The Study of the Integrated Technology of the Dual Fluidized-bed Gasification for Producing Medium Heating Value Syngas

중발열량 합성가스 생산을 위한 일체형 이중유동층 가스화 기술 연구

  • Choi, Jae-Myeong (Department of Chemical and Biological Engineering, Korea University) ;
  • Kim, Jae-Min (Department of Chemical and Biological Engineering, Korea University) ;
  • Kim, Sung-Hyun (Department of Chemical and Biological Engineering, Korea University) ;
  • Son, Yang-Seung (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Lee, Dong-Min (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Choi, Jin-Hoon (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Park, Sung-Youl (Climate Change Research Division, Korea Institute of Energy Research) ;
  • Kim, Seong-Soo (Climate Change Research Division, Korea Institute of Energy Research)
  • 최재명 (고려대학교 화공생명공학과) ;
  • 김재민 (고려대학교 화공생명공학과) ;
  • 김성현 (고려대학교 화공생명공학과) ;
  • 손양승 (서강대학교 화공생명공학과) ;
  • 이동민 (서강대학교 화공생명공학과) ;
  • 최진훈 (서강대학교 화공생명공학과) ;
  • 박성열 (한국에너지기술연구원 기후변화연구본부) ;
  • 김성수 (한국에너지기술연구원 기후변화연구본부)
  • Received : 2013.08.09
  • Accepted : 2013.08.30
  • Published : 2013.09.30
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Abstract

A 5 kg/hr scale integral dual fluidized-bed gasifier for producing medium heating value syngas from biomass or combustible wastes was manufactured. The effect of operating variables including gasification temperature, rate of feeding, and weight ratio of steam/feed on the behavior of the gasifier was investigated. The contents of $H_2$ and CO in syngas, flow rate of feeding, cold gas efficiency increased with the increased gasification temperature or rate of feeding, but decreased with the increased weight ratio of steam/feed within the experimental range. With wood powder as the feed, the concentrations of $H_2$ and CO in the syngas were as high as 41% and 32%, and the cold gas efficiency and lower heating value of the syngas were as high as 70.1% and $3,428kcal/Nm^3$. With food wastes as the feed, the concentrations of $H_2$ and CO in the syngas were as high as 37% and 23.9%, and the cold gas efficiency and lower heating value of the syngas were as high as 66.7% and $3,670kcal/Nm^3$.

바이오매스 또는 가연성 폐기물로부터 중발열량($2,500-5,000kcal/Nm^3$) 합성가스를 생산하기 위한 5 kg/hr 처리규모 일체형 이중유동층 가스화기를 제작하고 가스화 온도, 원료 투입량, 수증기/원료 무게비(S/F) 등의 운전조건이 가스화기의 거동에 미치는 영향을 조사하였다. 가스화 온도와 원료 공급량이 증가할수록 발생되는 합성가스 중 $H_2$와 CO 농도, 합성가스 유량, 냉가스 효율은 증가하였다. 반면에 수증기/원료 무게비가 실험범위 내에서 증가할수록 발생되는 합성가스 중 $H_2$와 CO 농도, 합성가스 유량, 냉가스 효율은 감소하였다. 원료가 목분인 경우 $H_2$ 농도 41%, CO 농도 32%, 냉가스 효율 70.1%, 합성가스 저위발열량 $3,428kcal/Nm^3$이 가능하였다. 원료가 음식폐기물인 경우 $H_2$ 농도 37%, CO 농도 23.9%, 냉가스 효율 66.7%, 합성가스 저위 발열량 $3,670kcal/Nm^3$이 가능하였다.

Keywords

References

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