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Gasification reactivity and combustion characteristics of semi-coke

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2019, 29(6), pp.579-584
  • DOI : 10.1007/s42823-019-00043-x
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 16, 2018
  • Accepted : September 12, 2019
  • Published : December 1, 2019

Zha Meiqin 1 Xia Wei 2 Niu Qiang 2

1Shanghai University
2Ordos Hanbo Technology Co. Ltd.

Accredited

ABSTRACT

Various semi-cokes were obtained from medium–low-temperature pyrolysis of Shenmu long flame coal. The combustion characteristic index and CO2 gasification reactivity of semi-cokes were measured and analyzed using thermogravimetry analysis. The influence of particle size on CO2 gasification reactivities of these semi-cokes was studied. In addition, the Brunauer–Emmett–Teller surface area (SBET), carbon material structure order and carbon crystalline structure were examined by N2 adsorption, Raman spectroscopy and powder X-ray diffraction. All of these properties were used to evaluate the CO2 gasification reactivity of these semi-cokes. The results show that the gasification reactivity of semi-cokes decreases with an increasing crystallinity and structure order. Surface area of the pores is proportional to the reactivity of the semi-coke; the greater the surface area, the faster the gasification reaction rate.

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