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Thermogravimetric analysis of the co-combustion of coal and paper mill sludge


  • Yanfen, Liao
  • Xiaoqian, Ma


The thermal behavior of semi-anthracite coal, paper sludge and their blends during pyrolysis and combustion processes was investigated in this study. The experiments were conducted in a differential thermogravimetric analyzer at different heating rates (10Â K/min, 20Â K/min and 30Â K/min) and at temperatures ranging from 310Â K to 1300Â K. The results revealed that de-volatilization of paper sludge occurred earlier with a higher rate, and that the process was further accelerated under oxygen-enriched conditions. The blends had integrative thermal profiles that reflected both paper sludge and coal. In addition, the blends showed different ignition and combustion behavior depending on the percentage of sludge. Two types of non-isothermal kinetic analysis methods were applied to evaluate the combustion processes. The kinetic parameters of the blends confirmed the improved ignition characteristics. In addition, both the TG profiles and activation energy indicated that the combustion of their blends with low percentages of sludge, such as 10 wt.%, were similar to that of coal. These experimental results help explain and predict the behavior of coal and paper sludge blends in practical applications.

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  • Yanfen, Liao & Xiaoqian, Ma, 2010. "Thermogravimetric analysis of the co-combustion of coal and paper mill sludge," Applied Energy, Elsevier, vol. 87(11), pages 3526-3532, November.
  • Handle: RePEc:eee:appene:v:87:y:2010:i:11:p:3526-3532

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    References listed on IDEAS

    1. Muthuraman, Marisamy & Namioka, Tomoaki & Yoshikawa, Kunio, 2010. "Characteristics of co-combustion and kinetic study on hydrothermally treated municipal solid waste with different rank coals: A thermogravimetric analysis," Applied Energy, Elsevier, vol. 87(1), pages 141-148, January.
    2. Yu, Yong Ho & Kim, Sang Done & Lee, Jong Min & Lee, Keun Hoo, 2002. "Kinetic studies of dehydration, pyrolysis and combustion of paper sludge," Energy, Elsevier, vol. 27(5), pages 457-469.
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    1. repec:eee:appene:v:212:y:2018:i:c:p:786-795 is not listed on IDEAS
    2. Lou, Rui & Wu, Shubin & Lv, Gaojin & Yang, Qing, 2012. "Energy and resource utilization of deinking sludge pyrolysis," Applied Energy, Elsevier, vol. 90(1), pages 46-50.
    3. Coimbra, Ricardo N. & Paniagua, Sergio & Escapa, Carla & Calvo, Luis F. & Otero, Marta, 2015. "Combustion of primary and secondary pulp mill sludge and their respective blends with coal: A thermogravimetric assessment," Renewable Energy, Elsevier, vol. 83(C), pages 1050-1058.
    4. Avelar, Nayara Vilela & Rezende, Ana Augusta Passos & Carneiro, Angélica de Cássia Oliveira & Silva, Cláudio Mudadu, 2016. "Evaluation of briquettes made from textile industry solid waste," Renewable Energy, Elsevier, vol. 91(C), pages 417-424.
    5. Jianzhong, Liu & Ruikun, Wang & Jianfei, Xi & Junhu, Zhou & Kefa, Cen, 2014. "Pilot-scale investigation on slurrying, combustion, and slagging characteristics of coal slurry fuel prepared using industrial wasteliquid," Applied Energy, Elsevier, vol. 115(C), pages 309-319.
    6. Tan, Peng & Ma, Lun & Xia, Ji & Fang, Qingyan & Zhang, Cheng & Chen, Gang, 2017. "Co-firing sludge in a pulverized coal-fired utility boiler: Combustion characteristics and economic impacts," Energy, Elsevier, vol. 119(C), pages 392-399.


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