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Study on the Pyrolysis Kinetics of Mixture of RDF and Carbonized Sludge with Thermogravimetric Analysis

RDF와 탄화슬러지 혼합물의 열중량 및 열동역학 특성 연구

  • Sun, Jian Feng (School of Architectural, Civil, Environmental and Energy Engineering, Major in Environmental and Energy Engineering, Kyungpook National University) ;
  • Hwang, Hyeon Uk (School of Architectural, Civil, Environmental and Energy Engineering, Major in Environmental and Energy Engineering, Kyungpook National University) ;
  • Kim, Myung Gyun (School of Architectural, Civil, Environmental and Energy Engineering, Major in Environmental and Energy Engineering, Kyungpook National University) ;
  • Nzioka, Antony Mutua (School of Architectural, Civil, Environmental and Energy Engineering, Major in Environmental and Energy Engineering, Kyungpook National University) ;
  • Lee, Chang Soo (Department of fire and Disaster Prevention, Uiduk University) ;
  • Kim, Young Ju (School of Architectural, Civil, Environmental and Energy Engineering, Major in Environmental and Energy Engineering, Kyungpook National University)
  • 순지엔펑 (경북대학교 대학원 건설환경에너지공학부 환경에너지공학전공) ;
  • 황현욱 (경북대학교 대학원 건설환경에너지공학부 환경에너지공학전공) ;
  • 김명균 (경북대학교 대학원 건설환경에너지공학부 환경에너지공학전공) ;
  • 느지오카 안토니 무투아 (경북대학교 대학원 건설환경에너지공학부 환경에너지공학전공) ;
  • 이창수 (위덕대학교 소방방재학과) ;
  • 김영주 (경북대학교 대학원 건설환경에너지공학부 환경에너지공학전공)
  • Received : 2015.10.12
  • Accepted : 2016.02.02
  • Published : 2016.02.29

Abstract

After analyzing of heating value of four kinds of RDF, the RDF-D has the highest heating value, was chosen to be mixed with carbonized sludge by different ratio. The 85%:15% ratio, which has the highest efficiency, was analyzed with thermogravimetric and pyrolysis kinetics. Applying of Kissinger method, activation energy was obtained from slope which is calculated from relation of ln(${\beta}/T^2{_m}$) and $1/T_m$. The kinetic parameters obtained from Kissinger method were 46.06 kJ/mol of RDF, 55.99 kJ/mol of carbonized sludge and 40.68 kJ/mol of mixture of RDF and carbonized sludge. The mixture of RDF and carbonized sludge has the lowest activation energy and frequency factor, during thermal decomposition reaction it has the slowest reaction rate and needs the lowest energy. Although activation energy with pyrolysis of RDF was irregularly scattered, it showed that activation energy was stabilized by co-pyrolysis of RDF and additives(Carbonized Sludge).

Keywords

Kinetics;Activation energy;RDF;Carbonized sludge;TGA;Kissinger method

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