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The Effect of Oxygen-Coal Equivalent Ratio on the Rapid Preparation of Powdered Activated Coke in Low Oxygen Atmosphere

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Clean Coal and Sustainable Energy (ISCC 2019)

Part of the book series: Environmental Science and Engineering ((ESE))

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Abstract

Oxygen is a good activator for the rapid preparation of the powdered activated coke (PAC) in the low oxygen atmosphere, and the oxygen-coal equivalent ratio is an important parameter in the preparation process. In order to obtain the optimal range of oxygen-coal equivalent ratio, it was adjusted by changing the amount of coal supplied under a certain gas distribution (6% O2 and 94% N2).The changes of the SO2 adsorption capacity of the PACs, the burn-off rate of raw coal and the production rate of gas phase products with the equivalent ratio were studied. In addition, the BET and SEM were used to characterize the pore structure of the PACs. The results showed that with the increase of the equivalent ratio, the SO2 adsorption capacity of the PACs increases first and then decreases, reaching the maximum at 0.5, which is 102.2 mg/g; the burn-off rate increases as a whole, but the increment is not obvious, which is in the range of 0.2 ~ 0.4. Combined with the analysis of gas phase products, BET and SEM, it is concluded that the PACs prepared when the oxygen-coal equivalent ratio is in the range of 0.2 ~ 0.5 have relatively developed pore structure. To sum up, the suitable oxygen-coal equivalent ratio range about the preparation of PAC is 0.3 ~ 0.5. This conclusion provides reference for future industrial application.

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Acknowledgements

This work was supported by the National Key R&D Program of China (No.2017YFB0602902).

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Authors and Affiliations

  1. National Engineering Laboratory of Coal-Fired Pollution Reduction, Shandong University, Jinan, 250061, China

    Binxuan Zhou, Yuan Zhao, Cheng Li, Tao Wang, Ping Zhou, Zhanlong Song & Chunyuan Ma

  2. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xian, 710021, China

    Tao Wang

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  1. Binxuan Zhou
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  2. Yuan Zhao
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  3. Cheng Li
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  4. Tao Wang
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  5. Ping Zhou
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  6. Zhanlong Song
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  7. Chunyuan Ma
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Correspondence to Tao Wang .

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Editors and Affiliations

  1. Department of Energy and Power Engineering, Tsinghua University, Beijing, China

    Junfu Lyu

  2. Department of Energy and Power Engineering, Tsinghua University, Beijing, China

    Shuiqing Li

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Zhou, B. et al. (2022). The Effect of Oxygen-Coal Equivalent Ratio on the Rapid Preparation of Powdered Activated Coke in Low Oxygen Atmosphere. In: Lyu, J., Li, S. (eds) Clean Coal and Sustainable Energy. ISCC 2019. Environmental Science and Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-1657-0_53

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  • DOI: https://doi.org/10.1007/978-981-16-1657-0_53

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-1656-3

  • Online ISBN: 978-981-16-1657-0

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