New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Conversion of Wood Waste into Solid Biofuel Using Catalytic HTC Process

촉매 열수탄화(Hydrothermal carbonization)공정을 이용한 폐목재의 고형연료 제조 및 특성 연구

  • 주보경 (신명산업(주) 융합기술연구소) ;
  • 연혜진 (신명산업(주) 융합기술연구소) ;
  • 이상일 (신명산업(주) 융합기술연구소) ;
  • 안수정 (신명산업(주) 융합기술연구소) ;
  • 이경재 (신명산업(주) 융합기술연구소) ;
  • 장은석 (고등기술연구원) ;
  • 원종철 (수도권매립지관리공사 연구개발처)
  • Received : 2014.04.21
  • Accepted : 2014.06.11
  • Published : 2014.06.25
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Abstract

The objective of this work is to produce solid biofuel from sawdust using the HTC (Hydrothermal carbonization) process. The HTC process of feedstock involves the raw material coming into contact with high temperature and pressurized water. The HTC process could produce gaseous, liquefied and solid products, but this study focused on solid product only as an alternative to coal. In this study, sawdust used for a feedstock and its moisture content was under 5%. Water was added with the feedstock to raise moisture content to 80% and also used catalysts. The HTC process was performed at temperature range from 200 to $270^{\circ}C$ and reaction time was 15 to 120 min. Rising temperature resulted in increasing the higher heating value (HHV) of HTC product. In case of adding catalyst, HHV of solid biofuel was higher and reaction occurred at lower temperature and pressure. Also, HTC solid product had been characterized and found to be hydrophobic, increased HHV (over 40%), and pelletized easily compared to raw material.

Keywords

References

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