The fast pyrolysis of biomass (larch) in a circulating fluidized bed pyrolyzer was performed and the physico-chemical characteristics of biocrude-oil was investigated. Standard sand was used for fluidizing material and various reaction temperatures from 400℃ to 550℃ was applied. Wood (larch) sample was examined thorough proximate analysis and thermogravimetric analysis (TGA). From the results of the sample test, thermal decomposition characteristics of wood (larch) was investigated. Various analyses were carried out to determine the physicochemical properties of biocrude-oil such as Higher heating value (HHV), water content, viscosity, ash content and microscopic anaysis. The maximum biocrude-oil yield was 49.9wt.% at 550℃. At this temperature, HHV and water content were 4562.0 kcal/kg and 13.8wt.%, respectively. From the study results, wood (larch) has potential as an alternative energy source.

Abstract
 I. 서 론
 II. 실험 방법
  1. 실험장치
  2. 실험재료
  3. 분석방법
 III. 결과 및 고찰
  1. 생성물 수율
  2. 바이오원유의 특성분석
 IV. 결 론
 References

• 황재규(연세대학교 환경공학부) | Jae Gyu Hwang
• 이병규(연세대학교 환경공학부) | Byung Kyu Lee
• 최명규(연세대학교 환경공학부) | Myung Kyu Choi
• 최항석(연세대학교 환경공학부) | Hang Seok Choi Corresponding author