To produce palm kernel shell (PKS) biocrude oil, a bubbling fluidized bed pyrolyzer was used with different sample sizes and reaction temperatures. The PKS sample sizes used were 0.1 ~ 0.4 mm, 0.4 ~ 1.0 mm, and 1.0 ~ 2.0 mm and the reaction temperature were 465oC, 490oC, 530oC, 560oC, and 590oC. The yield of PKS biocrude oil increased with decreasing the sample size. The maximum yield of PKS biocrude oil was 47.31% at 560oC with a PKS sample size of 0.1 ~ 0.4 mm. In addition, the maximum energy yield of PKS biocrude oil was 45.05% at 560oC and size 0.1 ~ 0.4 mm. Among the characteristics of PKS biocrude oil, the high heating values are from 15.98 MJ/Kg to 20.29 MJ/Kg, the moisture content is from 20.14wt.% to 31.57wt.%, and the viscosity ranges from 0.0117 N s/m2 to 0.0408 N s/m2. In addition, proximate analyses and elemental analysis of PKS biocrude oil were conducted.

Abstract
 I. 서 론
 II. 실험 장치 및 방법
  1. 시료
  2. 실험방법
  3. 분석방법
 III. 결과 및 고찰
  1. PKS바이오원유의 생산 수율
  2. PKS바이오원유의 특성
  3. 에너지수율
 IV. 결 론
  1. PKS 바이오원유의 수율
  2. PKS 바이오원유의 특성
 사 사
 References

• 한소영(한국기계연구원, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) | Soyoung Han
• 최연석(한국기계연구원, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) | Yeon-Seok Choi Corresponding author
• 최상규(한국기계연구원, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) | Sang-Kyu Choi
• 김석준(한국기계연구원, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) | Seock-Joon Kim
• 타우시프라만(한국기계연구원, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) | Tawsif Rahman