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Characteristic and Evolution of Sulfur Functionalities in Coal and Sewage Sludge during Combustion

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Challenges of Power Engineering and Environment

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Abstract

X-ray photoelectron spectroscopy was used to investigate the forms and the evolution of sulfur in a bituminous coal, a sewage sludge(SS) and their chars at different burn off ratio (0, 30%, 50%, 70% and 100%) during isothermal combustion. Samples were dried at 105°C and ground into fine powder, and passed through a 120 mesh screen. Chars were prepared at the temperature of 850°C under the environment of N2 and O2 (N2:O2=80:20) in a tube furnace reactor. Important conclusions were obtained from experiment as follows: The sulfur in the coal mainly existed in the forms of mercaptan(S1), sulfide(S2), thiophene(S3),sulfoxide(S4), sulfone(S5) and sulfate(S6). With the process of combustion, the contents of S1 and S2 decreased while that of S3 and S5 presented in the tendency of increasing in early stage and decreasing in terminal stage. S4 ascended in whole combustion period. Small amount of S6 was detected and the fluctuant characteristic of it was observed. The tendency of SI, S2, S5 and S6 in sewage sludge was consistent with that in coal, however, S4 decreased in the end of combustion. The evolution of S3 in sewage sludge was opposite to that of coal.

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Authors and Affiliations

  1. College of Power & Mechanical Engineering, Wuhan University, Wuhan, 430072, P.R. China

    Yi Hu, Niansu Hu, Peisheng Li, Jie Li, Wan Yu, jun Yang & Yanan Yue

  2. School of Water Resources & Hydropower, Wuhan University, Wuhan, 430072, P.R. China

    Guolu Yang

  3. Sewage Sludge and Silt Research Center, Wuhan University, Wuhan, 430072, P.R. China

    Yi Hu, Niansu Hu, Peisheng Li, Jie Li, Wan Yu, jun Yang, Yanan Yue & Guolu Yang

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  1. Yi Hu
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  4. Jie Li
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  5. Wan Yu
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  6. jun Yang
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Editors and Affiliations

  1. Institute for Thermal Power Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China

    Kefa Cen , Yong Chi  & Fei Wang ,  & 

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© 2007 Zhejiang University Press, Hangzhou and Springer-Verlag GmbH Berlin Heidelberg

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Hu, Y. et al. (2007). Characteristic and Evolution of Sulfur Functionalities in Coal and Sewage Sludge during Combustion. In: Cen, K., Chi, Y., Wang, F. (eds) Challenges of Power Engineering and Environment. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76694-0_31

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  • DOI: https://doi.org/10.1007/978-3-540-76694-0_31

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-76693-3

  • Online ISBN: 978-3-540-76694-0

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