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Effects of nano-TiO2 on combustion and desulfurization

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  • Zhao, Yi
  • Wang, Shuqin
  • Shen, Yanmei
  • Lu, Xiaojuan

Abstract

Nanosized titanium oxide powder was prepared via the sol–gel process and characterized by transmission electron microscope. The effects of nano-TiO2 on combustion characteristics of lignite, desulfurization in combustion and the properties of ashes were investigated. The calorific value of coals and the fusion point of the coal ashes were measured by calorimeter and ash fusion point determination meter; the components of coal ashes and the contents of combustible matters in ash were determined by chemical methods; the pore-size distribution and specific surface area of the coal ash were analyzed by surface area analyzer. A thermogravimetric analyzer was used to investigate the effect of nano-TiO2 on combustion. The results showed that the calorific value of the coal and the fusion temperature of the coal ash were lowered by adding CaO, while on the other hand adding nano-TiO2 to coal increased the calorific value and the melting temperature effectively. Meanwhile, the coal combustion efficiency and desulfurization in combustion could be effectively improved by the co-action of TiO2.

Suggested Citation

  • Zhao, Yi & Wang, Shuqin & Shen, Yanmei & Lu, Xiaojuan, 2013. "Effects of nano-TiO2 on combustion and desulfurization," Energy, Elsevier, vol. 56(C), pages 25-30.
    • Handle: RePEc:eee:energy:v:56:y:2013:i:c:p:25-30
    DOI: 10.1016/j.energy.2013.04.053
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    References listed on IDEAS

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    1. Liukkonen, M. & Heikkinen, M. & Hiltunen, T. & Hälikkä, E. & Kuivalainen, R. & Hiltunen, Y., 2011. "Artificial neural networks for analysis of process states in fluidized bed combustion," Energy, Elsevier, vol. 36(1), pages 339-347.
    2. You, C.F. & Xu, X.C., 2010. "Coal combustion and its pollution control in China," Energy, Elsevier, vol. 35(11), pages 4467-4472.
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    Cited by:

    1. Zhao, Yi & Han, Yinghui & Guo, Tianxiang & Ma, Tianzhong, 2014. "Simultaneous removal of SO2, NO and Hg0 from flue gas by ferrate (VI) solution," Energy, Elsevier, vol. 67(C), pages 652-658.
    2. Ju, Jianfeng & Chen, Xi & Shi, Yujun & Wu, Donghui & Hua, Ping, 2013. "A novel TiO2 nanofiber supported PdAg catalyst for methanol electro-oxidation," Energy, Elsevier, vol. 59(C), pages 478-483.

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    Keywords

    Nano-TiO2; Lignite; Catalytic combustion; Desulfurization;
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