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Catalytic effects of Fe, Al and Si on the formation of NOX precursors and HCl during straw pyrolysis

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Abstract

The catalytic effects of iron, aluminum or silicon on the formation of NOX precursors (HCN, NH3 and HNCO) and HCl during wheat straw pyrolysis were studied using a thermogravimetric analyzer (TG) coupled with a Fourier transform infrared (FTIR) spectrometer in argon atmosphere. The results show that the presence of iron, aluminum or silicon decreases conversion of straw-N into NH3 with the sequence of Fe > Si > Al. The iron or silicon addition suppresses N-conversion into HCN and HNCO, and the aluminum addition has no notable influence on HCN emission during pyrolysis. The share of N-conversion to NH3 and HCN increases, but that to HNCO and NO decreases a little in the presence of added iron, aluminum or silicon. The addition of SiO2 results in the highest HCl removal efficiency.

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Acknowledgements

This work was financed by the Special Fund of Transformation of Scientific and Technical Achievements in Jiangsu province, China (Project number: BA2007023) and the Foundation for Excellent Doctorial Dissertation of Southeast University.

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Authors and Affiliations

  1. School of Energy and Environment, Southeast University, Nanjing, 210096, Jiangsu Province, People’s Republic of China

    Qiangqiang Ren, Changsui Zhao, Xin Wu, Cai Liang & Xiaoping Chen

  2. Wuxi Huaguang Boiler Co., Ltd, Wuxi, 214028, Jiangsu Province, People’s Republic of China

    Jiezhong Shen & Zheng Wang

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  1. Qiangqiang Ren
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  2. Changsui Zhao
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  3. Xin Wu
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  4. Cai Liang
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  5. Xiaoping Chen
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  6. Jiezhong Shen
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  7. Zheng Wang
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Correspondence to Changsui Zhao.

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Ren, Q., Zhao, C., Wu, X. et al. Catalytic effects of Fe, Al and Si on the formation of NOX precursors and HCl during straw pyrolysis. J Therm Anal Calorim 99, 301–306 (2010). https://doi.org/10.1007/s10973-009-0150-0

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  • DOI: https://doi.org/10.1007/s10973-009-0150-0

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