Thermogravimetric analysis of the co-combustion of coal and paper mill sludge
AbstractThe 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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Bibliographic InfoArticle provided by Elsevier in its journal Applied Energy.
Volume (Year): 87 (2010)
Issue (Month): 11 (November)
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Web page: http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description
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- 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.
- 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.
- Chen, Chunxiang & Ma, Xiaoqian & Liu, Kai, 2011. "Thermogravimetric analysis of microalgae combustion under different oxygen supply concentrations," Applied Energy, Elsevier, vol. 88(9), pages 3189-3196.
- 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.
- 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.
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