화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.35, No.2, 445-455, February, 2018
DOI10.1007/s11814-017-0296-6  Export Citation
Coal structure change by ionic liquid pretreatment for enhancement of fixed-bed gasification with steam and CO2
Sang-phil Yoon, Lingyan Deng1, Hueon Namkung2, Shumin Fan, Tae-Jin Kang, and Hyung-Taek Kim†
  • Department of Energy Systems Research, Ajou University, Woncheon-dong, Youngtong-gu, Suwon 16499, Korea
  • 1Department of Chemical Engineering, McMaster University, Hamilton, Ontario, L8S 4L8, Canada
  • 2Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, P. R. China
E-mail:
An innovative pretreatment of Indonesian low-rank coal (ILRC) by 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) ionic liquid (IL) was conducted. The obtained IL pretreated coal had a loose and porous structure. Fourier transform infrared spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) analysis showed that pretreated ILRC had a stronger absorption ability and an increased average pore size (from 23.6 to 51.8 nm). Steam-coal gasification was conducted to explore the effect of coal pretreatment. The result showed that 1.63-times more hydrogen was generated from pretreated coal compared to original (i.e., untreated) coal, and carbon conversion (Xc) increased from 89.03 to 97.25%. During CO2 coal gasification, IL pretreated coal had a greater CO2 consumption potential and generated more CO. The chemical exergy of syngas of the pretreated coal gasification was higher than that of the untreated coal gasification with CO2 at 900 °C. In addition, pretreated coal emitted less CO2 than untreated coal at 900 °C.
Keywords:Fixed-bed Gasification;Coal Structure;Ionic Liquid Pretreatment;Higher Reactivity
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