Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
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A reaction kinetic study of CO2 gasification of petroleum coke, coals and mixture

  • Kook, Jin Woo (Department of Resources and Energy Engineering, Chonbuk National University) ;
  • Gwak, In Seop (Department of Resources and Energy Engineering, Chonbuk National University) ;
  • Gwak, You Ra (Department of Resources and Energy Engineering, Chonbuk National University) ;
  • Seo, Myung Won (Clean Fuel Department, KIER) ;
  • Lee, See Hoon (Department of Resources and Energy Engineering, Chonbuk National University)
  • Received : 2017.01.25
  • Accepted : 2017.08.04
  • Published : 2017.12.01
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Abstract

Characteristics of Char-$CO_2$ gasification were compared in the temperature range of $1,100-1,400^{\circ}C$ using a thermogravimetric analyzer (TGA) for petroleum coke, coal chars and mixed fuels (Petroleum coke/coal ratios: 0, 0.25, 0.5, 0.75, 1). The results showed that reaction time decreased with increasing gasification temperature, BET surface area and alkali index of coal. Mixed fuels composed of petroleum coke/coal exhibited reduced activation energies. Modified volumetric reaction model and shrinking core model might be suitably matched with experimental data depending on coal type and petroleum coke/coal ratio. Rate equations were suggested by selecting gas-solid reaction rate models for each sample that could simulate $CO_2$ gasification behavior.

Keywords

Acknowledgement

Supported by : Korea Institute of Energy Technology Evaluation and Planning (KETEP), National Research Council of Science & Technology (NST)

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