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Comparison of desulfurization kinetics of copper oxide sorbent

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Abstract

Desulfurization experiments of CuO, γ-Al2O3 and CuO/γ-Al2O3 were made in simulated flue gas by means of thermogravimetric analysis. It is found that reaction activities of CuO supported on γ-Al2O3 could be highly improved. Desulfurization kinetics of CuO/γ-Al2O3 was studied in the temperature range of 250 °C-400 °C and SO2 concentration of 0.1%-0.9%. The experimental data were tested and compared with kinetics models of volume reaction model (VRM), grain size model (GSM), random pore model (RPM) and pore-blocking model (PBM). Correlation analysis shows that VRM and RPM models do not fit experimental data well. GSM contradicts with the changes in the physical and chemical properties of CuO/γ-Al2O3 as the desulfurization proceeds. It is found that PBM is consistent with the change of pore structure of CuO/γ-Al2O3 sorbent during desulfurization process and predicts the conversion-time curves of the sorbent well. Meanwhile, kinetics parameters are obtained and discussed.

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Authors and Affiliations

  1. Key Laboratory of Vacuum Metallurgy for Non-ferrous Metal of Yunnan Province, State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, National Engineering Laboratory for Vacuum Metallurgy, Kunming, 650093, China

    Qing-chun Yu  (郁青春), Yong Deng  (邓勇), Fei Wang  (王飞), Bin Yang  (杨斌), Bao-qiang Xu  (徐宝强) & Da-chun Liu  (刘大春)

  2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China

    Qing-chun Yu  (郁青春), Yong Deng  (邓勇), Fei Wang  (王飞), Bin Yang  (杨斌), Bao-qiang Xu  (徐宝强) & Da-chun Liu  (刘大春)

  3. Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, China

    Yue-bin Feng  (冯跃斌)

Authors
  1. Qing-chun Yu  (郁青春)
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  2. Yong Deng  (邓勇)
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  3. Fei Wang  (王飞)
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  4. Yue-bin Feng  (冯跃斌)
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  5. Bin Yang  (杨斌)
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  6. Bao-qiang Xu  (徐宝强)
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  7. Da-chun Liu  (刘大春)
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Corresponding author

Correspondence to Qing-chun Yu  (郁青春).

Additional information

Foundation item: Projects(51264023, 51364020, U1202271) supported by the National Natural Science Foundation of China; Project(IRT1250) supported by the Program for Innovative Research Team in University of Ministry of Education of China; Project(2014HA003) supported by the Yunnan Province Science and Technology Talents Program, China

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Yu, Qc., Deng, Y., Wang, F. et al. Comparison of desulfurization kinetics of copper oxide sorbent. J. Cent. South Univ. 22, 2902–2908 (2015). https://doi.org/10.1007/s11771-015-2824-z

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  • DOI: https://doi.org/10.1007/s11771-015-2824-z

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