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author:

JAFFRI, GR (JAFFRI, GR.) [1] | ZHANG, Ji-yu (ZHANG, Ji-yu.) [2] (Scholars:张济宇)

Indexed by:

EI Scopus

Abstract:

The CO2 gasification of Fuijian anthracite using black liquor (BL) as a catalyst was performed in a thermogravimetry analyzer (TGA) under temperatures ranging from 750 °C to 950 °C at ambient pressure to evaluate the catalytic effect of 3%, 5%, 8%, 10% Na-BL-Loading on carbon conversion. Better catalytic activity was found with 8% Na-BL-Loading than those of other concentrations. Under the reaction control conditions, the relationships of coal conversion vs reaction time of three kinds of Fuijian high-metamorphous anthracites were measured within temperature range from 750 °C to 950 °C. Both homogeneous model (HM) and shrinking-core model (SCM) were applied to correlate the relations between conversion and time and to determine the reaction rate constants (k) under different temperatures, then the reaction activation energy (Ea) and the pre-exponential factor (A) of the three anthracites were predicted by using Arrhenius equation k = A·exp(Ea/RT). The Ea ranged from 76.18 kJ/mol to 104.22 kJ/mol at 8% Na-BL-Loading condition was detected, which is less than that from 150.93 kJ/mol to 185.44 kJ/mol at non-catalyst case, clearly demonstrating that the BL could be the source of inexpensive and effective catalyst for coal gasification. © 2007 Institute of Coal Chemistry, Chinese Academy of Sciences.

Keyword:

Activation energy Anthracite Carbon dioxide Catalyst activity Gasification Reaction kinetics Spent fuels Thermogravimetric analysis

Community:

  • [ 1 ] [JAFFRI, GR]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [ZHANG, Ji-yu]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou, 350002, China

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Source :

Journal of Fuel Chemistry and Technology

ISSN: 1872-5813

Year: 2007

Issue: 2

Volume: 35

Page: 128-135

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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