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The Study of Calcium Sulfate Decomposition by Experiments Under O2/CO2 Atmosphere

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Cleaner Combustion and Sustainable World (ISCC 2011)

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Abstract

Sulphur emission and the effect on ash properties and boiler- tube corrosion in oxy-fuel combustion have received increasing attention in the recent years. Early investigation about calcium- based desulphurization in oxy-fuel, addressed the advantage to reduce the SO2 emission. This paper, the decomposition of calcium sulphate was characterized by thermogravimetric analyzer. The results showed that the decomposition inhibited by increasing O2 concentration and SO2 concentration resulted from recycled flue gas. And CO2 concentration had the negative effect, which can be solved by changing O2 concentration through appropriately adjusting recycled flue gas ratio. The kinetics mechanism of calcium sulfate-decomposition in oxy-fuel combustion was further analyzed. Compared with conventional atmosphere, the reaction activation energy was heightened in oxy-fuel conditions, and the difference increased with rising temperature. So it can further confirm the advantage of calcium utilization rate under high temperature in oxy-fuel condition.

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Acknowledgments

This work was financially Supported by Foundation of Zhejiang Educational Committees (No. KYG091205046), and Supported by the Excellent Young Teachers Program of Zhejiang Province (No.ZX060212). It based on the book of The Experimental and Theory Study of Coal Combustion and Pollutions Releasing and Controlling under O2/CO2 Atmosphere. The authors also express sincere gratitude to the powerful support of State Key Laboratory of Clean Energy Utilization of Zhejiang University.

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Authors and Affiliations

  1. The School of Science, HangZhou Dianzi University, HangZhou, 310018, China

    Y. Liu

  2. State Key Laboratory of Clean Energy Utilization, HangZhou, 310018, China

    H. Zhou & K. F. Cen

  3. Chemical Engineering, The University of Newcastle, Newcastle, 2308, Australia

    Y. H. Liu, R. Stanger, L. Elliot & T. Wall

Authors
  1. Y. Liu
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  2. H. Zhou
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  3. Y. H. Liu
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  4. R. Stanger
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  5. L. Elliot
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  6. T. Wall
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  7. K. F. Cen
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Corresponding author

Correspondence to Y. Liu .

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Editors and Affiliations

  1. Institute of Thermal Engineering, Tsinghua University, Beijing, China, People's Republic

    Haiying Qi

  2. Institute of Thermal Engineering, Tsinghua University, Beijing, China, People's Republic

    Bo Zhao

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Liu, Y. et al. (2013). The Study of Calcium Sulfate Decomposition by Experiments Under O2/CO2 Atmosphere. In: Qi, H., Zhao, B. (eds) Cleaner Combustion and Sustainable World. ISCC 2011. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30445-3_46

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  • DOI: https://doi.org/10.1007/978-3-642-30445-3_46

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-30444-6

  • Online ISBN: 978-3-642-30445-3

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