바이오매스 부산물의 저속 열분해 특성에 대한 실험적 연구 (Experimental Study on Slow Pyrolysis Characteristics of Biomass Residues)

서지정보

· 발행기관 : 한국폐기물자원순환학회
· 수록지 정보 : 한국폐기물자원순환학회지 / 31권 / 1호 / 39 ~ 46페이지
· 저자명 : 이용운, 박진제, 강기섭, 류창국, 양원

초록

Pyrolysis of biomass is the thermal decomposition of its carbohydrate structures into numerious hydrocarbon compounds, light gases and carbon-rich solid residue. Understanding the pyrolysis characteristics is essential as fundamental data for various thermo-chemical conversion of biomass. This study investigated slow pyrolysis of four Indonesian biomass (sugarcane bagasse, cocopeat, palm kernel shell (PKS), umbrella tree) for a temperature range of 300 ~ 600oC. With increase in temperature, all samples showed a decrease in the biochar yield as more compounds were released as vapors increasing the bio-oil and gas yields. The biochar became more carbon-rich with a carbon content of 85 % or higher at 500oC. However, the product yields and properties showed large variations between the samples.
Cocopeat had the highest biochar yield, while wood and baggasse had the highest bio-oil yield. Despite the low mass yields, the biochar of wood and bagasse had the best quality in terms of macro-pore and micro-pore development, which is a key property for its applications as adsorbent, soil ameliorator, as well as fuel. The bio-oil did not have a sufficiently high HHV for use as main fuel, but could be utilized through co-firing or slurry production with biochar. In the light gases, CO and CO2 were dominant, but could be burned on-site to supply the heat required for pyrolysis.

영어초록

Pyrolysis of biomass is the thermal decomposition of its carbohydrate structures into numerious hydrocarboncompounds, light gases and carbon-rich solid residue. Understanding the pyrolysis characteristics is essential asfundamental data for various thermo-chemical conversion of biomass. This study investigated slow pyrolysis of fourIndonesian biomass (sugarcane bagasse, cocopeat, palm kernel shell (PKS), umbrella tree) for a temperature range of300 ~ 600oC. With increase in temperature, all samples showed a decrease in the biochar yield as more compounds werereleased as vapors increasing the bio-oil and gas yields. The biochar became more carbon-rich with a carbon content of85 % or higher at 500oC. However, the product yields and properties showed large variations between the samples.
Cocopeat had the highest biochar yield, while wood and baggasse had the highest bio-oil yield. Despite the low massyields, the biochar of wood and bagasse had the best quality in terms of macro-pore and micro-pore development, whichis a key property for its applications as adsorbent, soil ameliorator, as well as fuel. The bio-oil did not have a sufficientlyhigh HHV for use as main fuel, but could be utilized through co-firing or slurry production with biochar. In the lightgases, CO and CO2 were dominant, but could be burned on-site to supply the heat required for pyrolysis.

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