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Search / Korean Journal of Chemical Engineering
Korean Chemical Engineering Research,
Vol.53, No.6, 746-754, 2015
다양한 온도에서 석탄/바이오매스의 혼합 촤-CO2 가스화 반응특성 연구
Kinetic Study of Coal/Biomass Blended Char-CO2 Gasification Reaction at Various temperature
김정수, 김상겸, 조종훈, 이시훈, 이영우
본 연구는 이온교환법을 통해 Ni촉매를 담지한 저등급 석탄(인도네시아 Eco탄)과 바이오매스(대한민국 상록수)의 혼합물로부터 제조된 촤(char)를 700~900 oC 등온조건에서 온도가 반응속도에 미치는 영향에 대해 알아보았다. Char-CO2 가스화 반응은 700, 750, 800, 850, 900 oC의 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.
In this study, we investigated the effects of the temperature on the coal/biomass char-CO2 gasification reaction under isothermal conditions of 700~900 oC 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-CO2 gasification was calculated from the Arrhenius equation.
Keywords: Coal; Biomass; Gasification; Activation Energy; Gas-Solid Reaction
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