Solar Energy (태양에너지)

The Korean Solar Energy Society (한국태양에너지학회)
권호 표지

Effects of Biomass Additives on Yield of Coal Liquefaction

석탄액화시 바이오매스계 첨가제의 효과

  • Kim, J.W. (New Fuel Research Team, Korea Institue of Energy Research) ;
  • Sim, K.S. (New Fuel Research Team, Korea Institue of Energy Research) ;
  • Lee, S.H. (New Fuel Research Team, Korea Institue of Energy Research) ;
  • Park, K.B. (New Fuel Research Team, Korea Institue of Energy Research) ;
  • Lalvani, S.B. (Mechanical Engineering and Energy Processes, Southern Illinois University at Carbondale)
  • 김종원 (한국에너지기술연구소 신연료연구팀) ;
  • 심규성 (한국에너지기술연구소 신연료연구팀) ;
  • 이상호 (한국에너지기술연구소 신연료연구팀) ;
  • 박기배 (한국에너지기술연구소 신연료연구팀) ;
  • Published : 1998.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The effects of some additives(black liquor, wood and lignin) on the conversion of coal and product were investigated in the lab-scale, high pressure reacting system around $375^{\circ}C$. The addition of lignin to coal during liquefaction significantly increased the depolymerization of coal and enhanced the quality of the liquid products. Coprocessing of wood and coal at $400^{\circ}C$ increased yield of liquid product about 8%, but higher temperature above $400^{\circ}C$ reduced liquid product due to increase of gas products. The addition of black liquor resulted in an enhancement in coal conversion yields, however, the observed increase is lower than that obtained in the presence of NaOH because lignin present in black liquor is not very effective due to the $OH^-$ presence.

석탄액화시 나무, 리그닌, 흑액 등 바이오매스계 첨가제의 효과를 실험식적 규모의 고온, 고압 반응기에서 고찰하였다. 석탄액화시 리그닌계의 첨가는 석탄의 분해를 돕고, 액체생성물의 질을 높여준다. $400^{\circ}C$에서는 나무를 첨가하게 되면, 액체생성물이 8%정도 증가하지만, 그이상의 온도에서는 기체생성물의 증가로 액체생성물 수율이 줄어든다. 흑액은 액화수율을 증대시키기는 하지만, 그 증가율은 NaOH만을 첨가시킨 경우보다 낮았으며, $OH^-$의 존재 때문에 흑액중의 리그닌이 주는 효과가 그리 크지 않은 것으로 보인다.

Keywords