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Received January 25, 2017
Accepted August 4, 2017
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A reaction kinetic study of CO2 gasification of petroleum coke, coals and mixture
Department of Resources and Energy Engineering, Chonbuk National University, Jeonju 54896, Korea 1Clean Fuel Department, KIER, Daejeon 34129, Korea
donald@jbnu.ac.kr
Korean Journal of Chemical Engineering, December 2017, 34(12), 3092-3101(10), 10.1007/s11814-017-0214-y
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Abstract
Characteristics of Char-CO2 gasification were compared in the temperature range of 1,100-1,400_x000D_
°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 CO2 gasification behavior.
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References
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Goyal A, Pushpavanam S, Voolapalli RK, Fuel Process. Technol., 91(10), 1296 (2010)
Gong S, Zhu X, Kim Y, Song B, Yang W, Moon W, Byoun Y, Korean Chem. Eng. Res., 48(1), 80 (2010)
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