Effect of coal blending ratio on CO2 coke gasification

Jin-Ho Kim; Gyeong-Min Kim; Kevin Yohanes Lisandy; Chung-Hwan Jeon

Korean Journal of Chemical Engineering, Vol.34, No.11, 2852-2860, November, 2017

DOI10.1007/s11814-017-0196-9 Export Citation

Effect of coal blending ratio on CO2 coke gasification

Jin-Ho Kim, Gyeong-Min Kim, Kevin Yohanes Lisandy, and Chung-Hwan Jeon^†

School of Mechanical Engineering, Pusan Clean Coal Center, Pusan National University, Busan 46241 Korea

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Coke gasification is largely influenced by the raw coal, catalyst, and blending ratios, pore structure, and specific surface area of the raw coal. In this study, several properties of cokes related to their reactivity were measured using coke reactivity test apparatus (CRTA), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Brunauer-Emmet-Teller (BET) surface area analysis, and energy dispersive X-ray spectroscopy (EDS) to investigate the characteristics of coke gasification. The results indicated that the reactivity of coke in the temperature range from 950 to 1,050 °C was affected by the type of coke and its specific surface area rather than the general properties of the coke, although the overall reactivities at the other temperatures were uniform. EDS analysis showed that the catalyst acted on the reactivity of cokes at low temperatures, whereas the BET analysis indicated that the reactivity at high temperature was influenced by the specific surface area.

Keywords:CRTA (Coke Reactivity Test Apparatus);Coke;CO2 Gasification;Pore Development;Catalyst

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[2] Yoon SJ, Choi YC, Lee SH, Lee JG, Korean J. Chem. Eng., 24(3), 512 (2007)

[3] Lee SH, Choi KB, Lee JG, Kim JH, Korean J. Chem. Eng., 23(4), 576 (2006)

[4] Yang W, Ryu CK, Choi SM, Choi ES, Ri DW, Huh WW, Trans. Korean Soc. Mech. Eng. B, 28, 747 (2004)

[5] Gray RJ, Devanney KF, Int. J. Coal Geol., 6, 277 (1986)

[6] Cheng A, Iron and Steelmaker, 28, 39 (2001)

[7] Cheng A, Iron and Steelmaker, 28, 26 (2001)

[8] Price J, Gransden J, Hampel K, Vol. 1, Lecture No. 3, McMaster University, Hamilton, Ontario, Canada (2003).

[9] Cheng A, Iron and Steelmaker, 28, 30 (2001)

[10] Biswas AK, Principles of Blast Furnace Ironmaking: Theory and Practice, Cootha Publishing House, Brisbane, Australia, ISBN 0- 949917-00-1, ISBN 0-949917-08-7 (1985).

[11] Loison R, Foch P, Boyer A, Coke Quality and Production, Second edition, Butterworths Borough Green, Sevenoaks Kent TN15 8PH, England, ISBN 0-408-02870-X (1989).

[12] Cheng A, Iron and Steelmaker, 28, 78 (2001)

[13] Yang JD, McLean A, Sommerville ID, Iron and Steelmaker, 27, 103 (2000)

[14] Grigore M, Sakurovs R, French D, Sahajwalla V, Energy Fuels, 23, 2075 (2009)

[15] Gao B, Zhang JL, Zuo HB, Qi CL, Rong Y, Wang Z, J. Iron. Steel Res. Int., 21, 723 (2014)

[16] Laurendeau NM, Prog. Energy Combust. Sci., 4, 221 (1978)

[17] Kawakami M, Mizutani Y, Ohyabu T, Murayama K, Takenaka T, Yokoyama S, Steel Res. Int., 75, 84 (2004)

[18] Pang BY, Harris RJ, Tyler RJ, Sakurovs RJ, Thirteenth Annual International Pittsburg Coal Conference Proceedings, 1, 506 (1996).

[19] Harris DJ, Smith IW, Symposium (International) on Combustion, 23, 1185 (1991).