Combustion characteristics and kinetics of anthracite with added chlorine

Cui Wang; Jian-liang Zhang; Guang-wei Wang; Ke-xin Jiao; Zheng-jian Liu; Kuo-chih Chou

doi:10.1007/s12613-017-1458-6

Volume 24 Issue 7

Jul. 2017

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International Journal of Minerals, Metallurgy and Materials > 2017 > 24(7): 745-755. > DOI: 10.1007/s12613-017-1458-6

Cui Wang, Jian-liang Zhang, Guang-wei Wang, Ke-xin Jiao, Zheng-jian Liu, and Kuo-chih Chou, Combustion characteristics and kinetics of anthracite with added chlorine, Int. J. Miner. Metall. Mater., 24(2017), No. 7, pp.745-755. https://dx.doi.org/10.1007/s12613-017-1458-6

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Research Article

Combustion characteristics and kinetics of anthracite with added chlorine

Cui Wang^1,2),
Jian-liang Zhang^1,2), ,,
Guang-wei Wang¹⁾,
Ke-xin Jiao¹⁾,
Zheng-jian Liu¹⁾ and
Kuo-chih Chou²⁾

Author Affilications

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

Funds:

This work was financially supported by the Beijing Municipal Science & Technology Commission of China (No. Z161100002716017), the Key Program of the National Natural Science Foundation of China (No. U1260202), and the 111 Project (No. B13004).

Received: 10 October 2016; Revised: 20 February 2017; Accepted: 22 February 2017;

Graphical Abstract

Abstract

Abstract

The combustion process of Yangquan anthracite (YQ) with the addition of 0.045wt%, 0.211wt%, 1.026wt%, and 2.982wt% chlorine was investigated using a thermogravimetric method from an ambient temperature to 1173 K in an air atmosphere. Results show that the YQ combustion characteristics are not significantly affected by an increase in chlorine content. Data acquired for combustion conversion are then further processed for kinetic analysis. Average apparent activation energies determined using the model-free method (specifically the KAS method) are 103.025, 110.250, 99.906, and 110.641 kJ/mol, respectively, and the optimal kinetic model for describing the combustion process of chlorine-containing YQ is the nucleation kinetic model, as determined by the z(α) master plot method. The mechanism function of the nucleation kinetic model is then employed to estimate the pre-exponential factor, by making use of the compensation effect. The kinetic models to describe chlorine-containing YQ combustion are thus obtained through advanced determination of the optimal mechanism function, average apparent activation energy, and the pre-exponential factor.
- chlorine,
- anthracite,
- combustion characteristics,
- kinetics

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References (23)

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