Articles & Issues

Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received January 4, 2017
Accepted March 7, 2017

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

무회분 석탄(AFC)을 바인더로 이용한 코크스의 물리적 및 화학적 특성

Physical and Chemical characteristics of Cokes Using Ash-Free Coal as binder

김경민 김진호 리잔디케빈요하네스 김규보¹ 최호경² 전충환^†

Gyeong Min Kim Jin Ho Kim Kevin Yohanes Lisandy Gyu Bo Kim¹ Ho Kyung Choi² Chung Hwan Jeon^†

부산대학교 기계공학부, 46241 부산광역시 금정구 부산대학로63번길 2 ¹부산대학교 화력발전에너지분석기술센터, 46241 부산광역시 금정구 부산대학로63번길 2 ²한국에너지기술연구원 청정연료연구실, 34129 대전광역시 유성구 가정로 152

School of Mechanical Engineering, Pusan Nat’l Univ., 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea ¹Pusan Clean Coal Center, Pusan Nat’l Univ., 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea ²Clean Fuel Research Center, Korea Institute of Energy Research, 152, Gajeong-ro, Yuseong-gu, Daejeon, 34129, Korea

chjeon@pusan.ac.kr

Korean Chemical Engineering Research, June 2017, 55(3), 395-400(6), 10.9713/kcer.2017.55.3.395 Epub 2 June 2017

Download PDF

Abstract

본 연구에서는 무회분 석탄을 바인더로 첨가한 코크스의 물리적 및 화학적 성질들을 실험적으로 분석 고 강도 향상 메커니즘에 대해 고찰하였다. 또한 제철소에서의 CO2저감을 위해 반탄화 과정을 거친 바이오매스 연 를 이용하였다. 무회분 석탄과 함께 팽윤현상(Swelling)이 일어나지 않는 발전용 석탄을 함께 탄화시켜서 전자현미경(SEM)을 이용하여 인터페이스를 관찰하였다. 또한 코크스의 강도 분석을 위하여 I.T.T (Indirect Tensile Test)와 함께, 학적 구조 고찰을 위하여 1H NMR 및 13C NMR 분석을 사용하였다. 무회분 석탄의 1H NMR 및 13C NMR 분석으로 도출된 분자 구조와 코크스 강도의 관계를 도출하였으며, 그 결과 코크스의 강도는 무회분 석탄을 바인더로 첨가함으로써 증가될 수 있음 을 확인하였다

Coke strength was increased by adding ash-free coal (AFC) binder. In this study, the effect of the AFC binder on the physical and chemical properties of coke was experimentally investigated to understand the molecular mechanism for the improved coke strength. For reduced CO2 emission in steelmaking industry, torrefied biomass fuel mixed with coal binder is also considered. The interface between the base coal and AFC was thus examined using Scanning Electron Microscope (SEM). The coke strength was commonly measured by performing the indirect tensile test and Nuclear Magnetic Resonance (NMR) spectroscopy in 1H and 13C modes. For comprehensive mechanism study of the enhanced coke strength thus obtained, ordinary coal for thermal power plant use was carbonized with AFC for subsequent SEM examination. The NMR spectroscopy results of coke samples positively revealed that the tensile strength was proportional to the average number of aromatic rings.

Keywords

AFC Coke Binder Coke strength

References

Kwon HJ, Choi HK, Jo WT, Kim SD, Yoo JH, Chun DH, Rhim YJ, Lim JH, Lee SH, Rhee YW, Korean Chem. Eng. Res., 54(2), 234 (2016)
Choi HK, Kim SD, Yoo JH, Chun DH, Lim JH, Rhim YJ, Lee SH, Korean Chem. Eng. Res., 50(3), 449 (2012)
Takahiro S, Koji S, Noriyuki O, Maki H, Nobuyuki K, Kobe Steel Eng. Rep., 60(1), 62 (2010)
Takanohashi T, Shishido T, Saito I, Energy Fuels, 22(3), 1779 (2008)
Koyano K, Takanohashi T, Saito I, Energy Fuels, 25(6), 2565 (2011)
Naoto S, Toshimasa T, Yasuyuki H, Hidekazu F, ISIJ Int., 54(11), 2426-2431.
Sato Y, Kushiyama S, Tatsumoto K, Yamaguchi H, Fuel Process. Technol., 85(14), 1551 (2004)
Tadashi Y, J. Jpn. Petrol. Inst., 35(1), 1-13.
Tsugio M, Ichiro F, J. Inst. Fuel, 54(12), 983-993.
Kim SD, Woo KJ, Jeong SK, Rhim YJ, Lee SH, Korean J. Chem. Eng., 25(4), 758 (2008)
Suggate RP, Dickinson WW, Int. J. Coal Geol., 57(1), 1 (2004)