지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Torrefaction is considered as a promising pre-treatment for thermochemical utilization of biomass. Torrefaction temperature and time are the criticaloperation parameters. In this study, investigated were the effects of reaction temperature and time on product composition of torrefaction. scanningelectron microscope (SEM) images and thermo gravimetric analyzer (TGA) results were also compared for the effects of the operating parameters. SEMimages showed that the pores were observed at the temperature of 250 ℃ for 30 minutes. Rapid decreases in weight were observed the temperaturebetween 200 and 400 ℃. Higher heating value of the torrefied biomass was over 5,000 kcal/kg at the temperature of 250 ℃ for 45 minutes. Energy density,which is defined as the ratio of the energy yield over the mass yield was 1.36 at the temperature of 250 ℃ for 45 minutes. The energy density was higherup to 1.6 at the temperature of 280 ℃, which indicates greater loss in mass. The major components of the gas produced in the torrefaction were CO2 andCO, with traces of methane. The total amount of gas was 31.54 l/kg and the calorific value of the gas was 1,164.4 Kcal/Nm3 at the temperature of 250 ℃for 30 minute reaction time. Based on the results of this study, the temperature of effective torrefaction is about 250 ℃ for 30 to 45 minutes of reactiontime. Considering the heating value, it is desirable to utilize the gas for efficient process of torrefaction.
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참고문헌 (25)
참고문헌 신청
Achanai Buasri / 2012 / Biodiesel production from waste cooking palm oil using calcium oxide supported on activated carbon as catalyst in a fixed bed reactor / The Korean Jou
Antal, M. J. / 1995 / Cellulose Pyrolysis Kinetics : The Current State of Knowledge / Industrial &Engineering Chemistry Research 34 (3) : 703 ~ 717
Bergman, P. C. A. / 2005 / Torrefaction for biomass co-firing in existing coal-fired power stations "BIOCOAL"
Blasi, C. D. / 2008 / Modeling chemical and physical processes of wood and biomass pyrolysis / Progress in Energy and Combustion Science 34 : 47 ~ 90
Byung-Ho Song / 2007 / The characteristics of steam gasification of biomass and waste filter carbon / The Korean Journal of Chemical Engineering 24 (2) : 341 ~ 346
Antal, M. J. / 1995 / Cellulose Pyrolysis Kinetics : The Current State of Knowledge / Industrial &Engineering Chemistry Research 34 (3) : 703 ~ 717
Bergman, P. C. A. / 2005 / Torrefaction for biomass co-firing in existing coal-fired power stations "BIOCOAL"
Blasi, C. D. / 2008 / Modeling chemical and physical processes of wood and biomass pyrolysis / Progress in Energy and Combustion Science 34 : 47 ~ 90
Byung-Ho Song / 2007 / The characteristics of steam gasification of biomass and waste filter carbon / The Korean Journal of Chemical Engineering 24 (2) : 341 ~ 346
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