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NOx and SO 2 Emissions during Co-Combustion of RDF and Anthracite in the Environment of Precalciner

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  • Xiaolin Chen

    (State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China)

  • Junlin Xie

    (State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    Research and Test Center of Materials, Wuhan University of Technology, Wuhan 430070, China)

  • Shuxia Mei

    (State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China)

  • Feng He

    (State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China)

Abstract

Based on the temperature and O 2 concentration in the cement precalciner, co-combustion of anthracite and Refuse Derived Fuel (RDF) were investigated using a thermogravimetric analyzer (TGA) and a double furnaces reactor. Both the TGA and double furnaces reactor results indicated that the co-combustion characteristics were the linear additive effect in the devolatilization stage, while it was the synergistic effect in the char combustion stage. During co-combustion, at 900 °C, NOx released rapidly during the devolatilization stage, but in the char combustion stage the NOx formation were inhibited; at 800 °C, a large amount of CO formed, which could reduce the NOx. In general, at 900 °C and 800 °C, the application of co-combustion could lower the NOx emission yield and lower the NOx conversion. By combining the combustion characteristics with the XRD results, it was indicated that during co-combustion, at 800 °C, the SO 2 formation reaction was inhibited, and the SO 2 yield and conversion were quite low.

Suggested Citation

  • Xiaolin Chen & Junlin Xie & Shuxia Mei & Feng He, 2018. "NOx and SO 2 Emissions during Co-Combustion of RDF and Anthracite in the Environment of Precalciner," Energies, MDPI, vol. 11(2), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:337-:d:129984
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    References listed on IDEAS

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