화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.57, No.6, 874-882, December, 2019
DOI10.9713/kcer.2019.57.6.874  Export Citation
미이용 산림바이오매스 및 폐목재의 기포 유동층 Air 가스화 특성 연구
Air Gasification Characteristics of Unused Woody Biomass in a Lab-scale Bubbling Fluidized Bed Gasifier
한시우1, 2, 서명원1, †, 박성진1, 손성혜1, 2, 윤상준1, 라호원1, 문태영1, 문지홍1, 윤성민1, 김재호1, 이은도3, 정수화3, 양창원3, 이영우2, †
  • 1한국에너지기술연구원 청정연료연구실, 34129 대전광역시 유성구 가정로 152
  • 2충남대학교 에너지과학기술대학원, 34134 대전광역시 유성구 대학로 99
  • 3한국생산기술연구원 고온에너지시스템그룹, 31056 충청남도 천안시 서북구 입장면 양대기로길 89
Si Woo Han1, 2, Myung Won Seo1, †, Sung Jin Park1, Seong Hye Son1, 2, Sang Jun Yoon1, Ho Won Ra1, Tae-Young Mun1, Ji Hong Moon1, Sung Min Yoon1, Jae Ho Kim1, Uen Do Lee3, Su Hwa Jeong3, Chang Won Yang3, and Young Woo Rhee2, †
  • 1Clean Fuel Laboratory, Korea Institute of Energy Research, 152, Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea
  • 2Graduate School of Energy Science and Technology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
  • 3Thermochemical Energy System R&D Group, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31056, Korea
E-mail:,
초록
본 연구에서는, Lab-scale 기포 유동층 가스화기(직경 : 0.11 m, 높이 : 0.42 m)에서 미이용 산림 바이오매스 4종과 폐목재 1종의 가스화 특성을 살펴보았다. 실험은 온도와 연료 주입량을 각각 800 oC, 1 kg/h로 고정하고, ER 0.15-0.3, 가스 유속 2.5-5 U0 /Umf으로 변화시키면서 진행했다. 층 물질로는 silica sand와 olivine을 사용하였다. 생성 가스의 조성은 NDIR 분석기와 GC를 통해 분석하였으며, 분석 결과 평균적으로 H2 3~4 vol%, CO 15~16 vol%, CH4 4 vol%, CO2 18~19 vol.%으로 미이용 산림바이오매스와 폐목재 모두 비슷한 조성을 보였으며, 생성 가스의 평균 저위발열량은 1193~1301 kcal/Nm3을, 고위발열량은 1262~1377 kcal/Nm3을 나타내었다. 또한, 타르 저감 효과를 알아보고자 층 물질로 olivine을 사용 시 silica sand에 비해 생성 가스 내 C2 이상 성분이 대부분 감소하였고, H2 함량이 증가하여 타르의 cracking 반응이 생겼음을 확인하였다. 비응축성 타르는 72% (1.24 → 0.35 g/Nm3), 응축성 타르는 27% (4.4 → 3.2 g/Nm3)가량 감소하는 효과를 확인하였다.
In this study, the gasification characteristics of four types of unused woody biomass and one waste wood in a lab-scale bubbling fluidized bed gasifier (Diameter: 0.11 m, Height: 0.42 m) were investigated. Effect of equivalence ratio (ER) of 0.15-0.3 and gas velocity of 2.5-5 U0/Umf are determined at the constant temperature of 800 °C and fuel feeding rate of 1 kg/h. The silica sand particle having an average particle size of 287 μm and olivine with an average particle size of 500 μm were used as the bed material, respectively. The average product gas composition of samples is as follows; H2 3-4 vol.%, CO 15-16 vol.%, CH4 4 vol.% and CO2 18-19 vol.% with a lower heating value (LHV) of 1193-1301 kcal/ Nm3 and higher heating value (HHV) of 1262-1377 kcal/Nm3. In addition, it was found that olivine reduced most of C2 components and increased H2 content compared to silica sand, resulting in cracking reaction of tar. The non-condensable tar decreases by 72% (1.24 → 0.35 g/Nm3) and the condensable tar decreases by 27% (4.4 → 3.2 g/Nm3).
Keywords:Unused woody biomass;Gasification;Bubbling fluidized bed;Syn-gas;Tar
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