커피찌꺼기의 열분해 반응속도 및 급속열분해를 이용한 바이오원유 제조에 관한 연구 (A Study on the Kinetics of Pyrolysis Reaction of Coffee Ground Residue and Biocrude-oil Production by Fast Pyrolysis)

서지정보

· 발행기관 : 한국폐기물자원순환학회
· 수록지 정보 : 한국폐기물자원순환학회지 / 33권 / 8호 / 786 ~ 795페이지
· 저자명 : 한소영, 최연석, 최상규, 김석준, 정연우

초록

Converting biomass to biocrude oil has been extensively studied worldwide as a renewable energy technology and asolution to global warming caused by overuse of fossil fuels because it is a carbon neutral fuel that originates from biomassand, thus, could help prevent climate change. Fast pyrolysis is an effective technology for producing biocrude-oil, andwoody biomass is usually used as feedstock. Although many studies have been performed with this feedstock, highproduction cost and low higher heating value (HHV) have frequently reported as challenging barriers to commercialization.
Thus, coffee ground residue was selected as an alternative feedstock to overcome this barrier due to its higher HHV thanother biomasses, as well as an expected improvement in the recycling rate of organic waste from many coffee shops. Akinetic study on the thermal decomposition reaction of ground coffee residue was carried out previously to investigatepyrolysis characteristics by thermogravimetric analysis, and its kinetic parameters were studied using two calculationmodels. A bubbling-fluidized-bed reactor was used for fast pyrolysis and the yield and characteristics of the biocrudeoilfrom ground coffee residue were investigated at reaction temperatures of 400-600oC. The activation energy of thedecomposition reaction was calculated separately to be 41.57 kJ/mol and 44.01-350.20 kJ/mol with the above two methods.
The highest biocrude-oil content was about 51.7wt% at 550oC.

영어초록

Converting biomass to biocrude oil has been extensively studied worldwide as a renewable energy technology and asolution to global warming caused by overuse of fossil fuels because it is a carbon neutral fuel that originates from biomassand, thus, could help prevent climate change. Fast pyrolysis is an effective technology for producing biocrude-oil, andwoody biomass is usually used as feedstock. Although many studies have been performed with this feedstock, highproduction cost and low higher heating value (HHV) have frequently reported as challenging barriers to commercialization.
Thus, coffee ground residue was selected as an alternative feedstock to overcome this barrier due to its higher HHV thanother biomasses, as well as an expected improvement in the recycling rate of organic waste from many coffee shops. Akinetic study on the thermal decomposition reaction of ground coffee residue was carried out previously to investigatepyrolysis characteristics by thermogravimetric analysis, and its kinetic parameters were studied using two calculationmodels. A bubbling-fluidized-bed reactor was used for fast pyrolysis and the yield and characteristics of the biocrudeoilfrom ground coffee residue were investigated at reaction temperatures of 400-600oC. The activation energy of thedecomposition reaction was calculated separately to be 41.57 kJ/mol and 44.01-350.20 kJ/mol with the above two methods.
The highest biocrude-oil content was about 51.7wt% at 550oC.

참고자료

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