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Co-combustion of coal and waste in pulverized coal boiler

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  • Vekemans, Odile
  • Laviolette, Jean-Philippe
  • Chaouki, Jamal

Abstract

A novel reactor reproducing PCB (pulverized coal boiler) environment was used to evaluate the potential of sorbent co-firing and waste co-combustion as cheap retrofitting techniques to reduce SO2 emissions of existing boiler. Several co-feeding tests of coal and CaCO3 and coal and Ca(OH)2 have been performed for a gas residence time around 0.5 s (4 times shorter than PCB). Results show sulfur emission reduction up to 18% with Ca(OH)2 injection, and up to 20% with limestone for a Ca/S ratio of 2. Co-firing of a 20% thermal share of a waste derived fuel called ReEF™, led to SO2 emissions reduction of around 20%. Co-firing of this ReEF™ led also to HCl emissions of more than 20 ppm due to the PVC content of the ReEF™.

Suggested Citation

  • Vekemans, Odile & Laviolette, Jean-Philippe & Chaouki, Jamal, 2016. "Co-combustion of coal and waste in pulverized coal boiler," Energy, Elsevier, vol. 94(C), pages 742-754.
    • Handle: RePEc:eee:energy:v:94:y:2016:i:c:p:742-754
    DOI: 10.1016/j.energy.2015.11.026
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    References listed on IDEAS

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    1. Makarytchev, S.V. & Cen, K.F. & Luo, Z.Y., 1994. "Staged desulphurization by direct sorbent injection in pulverized-coal boilers," Energy, Elsevier, vol. 19(9), pages 947-956.
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    Cited by:

    1. Song, Jiajia & Deng, Jun & Zhao, Jingyu & Zhang, Yanni & Wang, Caiping & Shu, Chi-Min, 2021. "Critical particle size analysis of gas emission under high-temperature oxidation of weathered coal," Energy, Elsevier, vol. 214(C).
    2. Jayaraman, Kandasamy & Kök, Mustafa Versan & Gökalp, Iskender, 2020. "Combustion mechanism and model free kinetics of different origin coal samples: Thermal analysis approach," Energy, Elsevier, vol. 204(C).
    3. Hao, Runlong & Zhang, Zili & Zeng, Qinda & Mao, Yumin & He, Hongzhou & Mao, Xingzhou & Yang, Fan & Zhao, Yi, 2018. "Synergistic behaviors of anthracite and dried sawdust sludge during their co-combustion: Conversion ratio, micromorphology variation and constituents evolutions," Energy, Elsevier, vol. 153(C), pages 776-787.
    4. Vekemans, Odile & Laviolette, Jean-Philippe & Chaouki, Jamal, 2016. "Reduction of pulverized coal boiler's emissions through ReEngineered Feedstock™ co-combustion," Energy, Elsevier, vol. 101(C), pages 471-483.
    5. Zhao, Jingyu & Deng, Jun & Wang, Tao & Song, Jiajia & Zhang, Yanni & Shu, Chi-Min & Zeng, Qiang, 2019. "Assessing the effectiveness of a high-temperature-programmed experimental system for simulating the spontaneous combustion properties of bituminous coal through thermokinetic analysis of four oxidatio," Energy, Elsevier, vol. 169(C), pages 587-596.

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      Keywords

      Pulverized coal boiler; Co-combustion; RDF; Waste; SO2 emission; Model;
      All these keywords.

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