Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Kinetic Study of Coal/Biomass Blended Char-CO2 Gasification Reaction at Various temperature

다양한 온도에서 석탄/바이오매스의 혼합 촤-CO2 가스화 반응특성 연구

  • Kim, Jung Su (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Kim, Sang Kyum (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Cho, Jong Hoon (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Lee, Si Hoon (Korea Institute of Energy Research) ;
  • Rhee, Young Woo (Graduate School of Energy Science and Technology, Chungnam National University)
  • 김정수 (충남대학교 에너지과학기술대학원) ;
  • 김상겸 (충남대학교 에너지과학기술대학원) ;
  • 조종훈 (충남대학교 에너지과학기술대학원) ;
  • 이시훈 (한국에너지기술연구원) ;
  • 이영우 (충남대학교 에너지과학기술대학원)
  • Received : 2014.12.23
  • Accepted : 2015.03.27
  • Published : 2015.12.01
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Abstract

In this study, we investigated the effects of the temperature on the coal/biomass $char-CO_2$ gasification reaction under isothermal conditions of $700{\sim}900^{\circ}C$ using the lignite(Indonesia Eco coal) with biomass (korea cypress). Ni catalysts were impregnated on the coal by the ion-exchange method. Four kinetic models which are shrinking core model (SCM), volumetric reaction model (VRM), random pore model (RPM) and modified volumetric reaction model (MVRM) for gas-solid reaction were applied to the experimental data against the measured kinetic data. The Activation energy of Ni-coal/biomass, non-catalyst coal/biomass $Char-CO_2$ gasification was calculated from the Arrhenius equation.

본 연구는 이온교환법을 통해 Ni촉매를 담지한 저등급 석탄(인도네시아 Eco탄)과 바이오매스(대한민국 상록수)의 혼합물로부터 제조된 촤(char)를 $700{\sim}900^{\circ}C$ 등온조건에서 온도가 반응속도에 미치는 영향에 대해 알아보았다. $Char-CO_2$ 가스화 반응은 700, 750, 800, 850, $900^{\circ}C$의 온도에서 진행하였으며, 기-고체 반응의 가스화 거동특성을 알아보기 위하여 각각 다른 가정을 갖고 있는 shrinking core model(SCM), volumetric reaction model(VRM), random pore model(RPM), modified volumetric reaction model(MVRM)을 실험결과에 적용하여 비교하였다. Arrhenius equation를 이용하여 Ni-coal/biomass와 Non-catalyst coal/biomass의 활성화에너지를 구하였고 이를 비교하였다.

Keywords

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