Effect of inorganic matter on reactivity and kinetics of coal pyrolysis

Quanrun Liu, Haoquan Hu, Qiang Zhou, Shengwei Zhu, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

228 Citations (Scopus)

Abstract

Two Chinese coals, Shenfu subbituminous coal and Huolingele lignite, were used to investigate the effect of mineral matter in coal on reactivity and kinetic characteristics of coal pyrolysis. The experiments were carried out by using thermogravimetry to check the pyrolysis behavior of raw coal, HCl/HF demineralized coal and demineralized coal with inorganic matter (CaO, K2CO3and Al2O3) added, respectively. The results showed that inherent mineral in coal had no evident effect on the reactivity and kinetics of coal pyrolysis. CaO, K2CO3and Al2O3all had a catalytic effect on the reactivity of coal pyrolysis, their effects were closely related to temperature region and coal types. The pyrolysis process of all the samples studied can be described by three independent first order kinetic model. Addition of inorganic matter the activation energy decreased and the characteristic temperature of coal changed.
Original languageEnglish
Pages (from-to)713-718
Number of pages6
JournalFuel
Volume83
Issue number6
DOIs
Publication statusPublished - 1 Apr 2004
Externally publishedYes

Keywords

  • Coal pyrolysis
  • Kinetics
  • Mineral

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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