Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluating The Fuel Characteristics of Wood Pellets Fabricated with Wood Tar and Starch as An Additive

목타르와 전분 첨가제 혼합에 따른 목재펠릿 품질특성 평가

  • Ahn, Byoung-Jun (Division of Wood Chemistry & Microbiology, Department of Forest Products, Korea Forest Research Institute) ;
  • Lee, Soo-Min (Division of Wood Chemistry & Microbiology, Department of Forest Products, Korea Forest Research Institute)
  • 안병준 (국립산림과학원 임산공학부 화학미생물과) ;
  • 이수민 (국립산림과학원 임산공학부 화학미생물과)
  • Received : 2013.09.11
  • Accepted : 2014.03.21
  • Published : 2014.05.25
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to investigate the potential of non-used forest biomass residues as raw materials for making wood pellets with additives such as wood tar and starch and to evaluate fuel characteristics of the pellets. Wood tar, a by-product provided from the carbonization process of wood, could be a suitable additive for wood pellet production due to its higher calorific value and lower hazardous heavy metals, such as cadmium and mercury, compared to woody biomass. When the wood tar (10 wt%) was added, the calorific value was increased from 4,630 kcal/kg (wood pellet without additive) to 4,800 kcal/kg (wood pellet with additive). With the increase of additive amount into wood pellet, the length and individual density of wood pellet increased. In addition, bulk density of the pellets was increased, whereas the fine content was decreased. Consequently the overall productivity of wood pellets was improved by adding 2 w% additives into wood pellets; the percentage of productivity increase was 5.9% and 4.9% for adding starch and wood tar, respectively.

본 연구는 현재 산업적으로 이용되고 있지 않는 산림바이오매스 부산물을 목재펠릿 원료 및 첨가제로서의 활용 가능성을 탐색하기 위하여 수행되었다. 목재의 탄화과정에서 발생되는 목타르는 목재와 비교하여 발열량이 높으며, 카드뮴, 수은과 같은 유해 중금속을 포함하고 있지 않아 펠릿 첨가제로서 이용 가능성이 높다. 목재펠릿 제조 시 첨가제로 목타르 10%를 첨가한 경우의 발열량(4,800 kcal/kg)은 대조구로 사용된 미 첨가구(4,630 kcal/kg)와 비교하여 약 3.7%(170 kcal/kg)의 발열량 상승효과가 있는 것으로 나타났다. 첨가제를 혼합하여 제조한 목재펠릿의 경우, 첨가제의 혼합비율이 증가함에 따라 길이와 개체밀도가 증가하였다. 또한 첨가제 혼합비율이 증가함에 따라 겉보기밀도는 증가하고 미세분 함량은 감소하는 경향을 나타냈다. 목재펠릿 첨가제 2%를 사용하여 미첨가한 경우(33.8 kg)와의 펠릿 생산성을 비교한 결과, 전분 첨가 목재펠릿은 5.9%(35.8 kg), 목타르 첨가 목재펠릿은 4.6%(35.4 kg)의 생산성 향상 효과를 나타냈다.

Keywords

References

  1. Ahn, B.J. Kim, Y.S., Lee, O.K., Cho, S.T., Choi, D.H., Lee, S.M. 2013. Wood pellet production using domestic forest thinning residues and their quality characteristics. Mokchae Konghak 41(4): 346-357. https://doi.org/10.5658/WOOD.2013.41.4.346
  2. Aylott, M.J., Casella, E., Farrall, K., Taylor, G. 2010. Estimating the supply of biomass from short rotation coppice in England, given social, economic and environmental constraints to land availability. Biofuels 1(4): 1-9.
  3. Biopellet energy market - Global market size, average price, competitive analysis and key country analsis to 2020. Global Data June 2012: 1-91.
  4. Fantozzi, F., Buratti, C. 2010. Life cycle assessment of biomass chains: Wood pellet from short rotation coppice using data measured on a real plant. Biomass and Bioenergy 34: 1796-1804. https://doi.org/10.1016/j.biombioe.2010.07.011
  5. Han, G.S., Kim, Y.I., Mun, K.T. 2012. Briquetting from Japanese larch and Hyunsasi poplar. Mokchae Konghak 40(1): 1-9. https://doi.org/10.5658/WOOD.2012.40.1.1
  6. Kaliyan, N., Morey. R.V. 2009. Factors affecting strength and durability of densified biomass products. Biomass and Bioenergy 33: 337-359. https://doi.org/10.1016/j.biombioe.2008.08.005
  7. Klasnja, B., Kopitovic, S., Orlovic, S. 2002. Wood and bark of some poplar and willow clones as fuelwood. Biomass and Bioenergy 23: 427-432. https://doi.org/10.1016/S0961-9534(02)00069-7
  8. Korea Forest Service. Energy utilization countermeasure of wood pellet. 2009:1-29.
  9. Kwon, G.J., Kwon, S.M., Cha, D.S., Kim, N.H. 2010. Characteristics of pellet prepared from sawdust and wood tar. Mokchae Konghak 38(1): 36-42. https://doi.org/10.5658/WOOD.2010.38.1.36
  10. Labrecque, M., Teodorescu, T.I. 2005. Field performance and biomass production of 12 willow and poplar clones in short-rotation coppice in southern Quebec (Canada). Biomass and Bioenergy 29: 1-9. https://doi.org/10.1016/j.biombioe.2004.12.004
  11. Labrecque, M., Teodorescu, T.I., Daigle, S. 1997. Biomass productivity and wood energy of Salix species after 2 years growth in SRIC fertilized with wastewater sludge. Biomass and Bioenergy 12(6): 409-417. https://doi.org/10.1016/S0961-9534(97)00011-1
  12. Lee, E.S., Kang, C.Y., Seo, J.W., Park, H. 2011. A study on productivity and quality characteristics of wood pellets by Larix kaemferi Carr sawdust with adding vegetable oils and ozonized vegetable oil. Mokchae Konghak 39(4): 359- 369.
  13. Lee, S.M., Choi, D.H., Cho, S.T., Nam, T.H., Han, G.S., Yang, I. 2011. Effects of various factors on the durability of pellets fabricated with Larix kaempferi C. and Liriodendron tulipifera L. Mokchae Konghak 39(3): 258-268. https://doi.org/10.5658/WOOD.2011.39.3.258
  14. Mediavilla, I., Esteban, L.S., Fernández, M.J. 2012. Optimization of pelletisation conditions for poplar energy crop. Fuel Processing Technology 104: 7-15. https://doi.org/10.1016/j.fuproc.2012.05.031
  15. Mitsui, Y., Seto, S., Nishio, M., Minato, K., Ishizawa, K., Satoh, S. 2010. Willow clones with hjgh biomass yield in short rotation coppice in the southern region of Tohoku district (Japan). Biomass and Bioenergy 34: 467-473. https://doi.org/10.1016/j.biombioe.2009.12.010
  16. Paik, K.H., Choi, J.W., Kim, J.J. 2011. Bioenergy.Biomass. 249.
  17. Samuelsson, R., Larsson, S.H., Thyrel, M., Lestander, T.A. 2012. Moisture content and storage time influence the binding mechanisms in biofuel wood pellets. Applied Energy 99: 109-115. https://doi.org/10.1016/j.apenergy.2012.05.004
  18. Szczukowski, S., Tworkowski, J., Klasa, A., Stolarski, M. 2002. Productivity and chemical composition of wood tissues of short rotation willow coppice cultivated on arable land. ROSTLINNA VYROBA 48(9): 413-417.
  19. Tarasov, D., Shahi, C., Leitch, M. 2013. Effect of additives on wood pellet physical and thermal characteristics: A review. Hindawi Publishing Corporation ISRN Forestry 2013: 1-6.

Cited by

  1. Improvement in The Fuel Characteristics of Empty Fruit Bunch by Leaching and Wet Torrefaction vol.44, pp.3, 2016, https://doi.org/10.5658/WOOD.2016.44.3.360
  2. Biomass pellets for power generation in India: a techno-economic evaluation vol.25, pp.29, 2018, https://doi.org/10.1007/s11356-018-2960-8