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Biomass Chemical Engineering ›› 2021, Vol. 55 ›› Issue (6): 1-9.doi: 10.3969/j.issn.1673-5854.2021.06.001

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Combustion Characteristics of Co-hydrothermal Carbonization Products of Municipal Solid Waste and Peanut Shell

Tao CHEN1,2, Xianjun XING1,2,*(), Peiyong MA2, Qiong REN2, Jiajia ZHANG1,2, Na LIU3   

  1. 1. College of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
    2. Advanced Energy Technology and Equipment Research Institute, Hefei University of Technology, Hefei 230009, China
    3. Anhui Blue Sky Energy and Environmental Protection Technology Co. Ltd., Hefei 231603, China
  • Received:2020-10-14 Online:2021-11-30 Published:2021-10-29
  • Contact: Xianjun XING E-mail:xxianjun@hfut.edu.cn


Based on the study of physical and chemical properties of co-hydrothermal carbonization products of municipal solid waste(MSW) and peanut shell(PS), thermogravimetry(TG) analysis was used to investigate the combustion characterstic and kinetics of co-carbonization products. The results indicated that the TG curves of co-carbonization products presented three weight loss peaks in the combustion, the lost degree of the second weightlessness peak was more than 50% of the total weightlessness. At the same co-carbonization temperature, with the increase of the proportion of peanut shells, combustion reactions were more thorough, TG curves were shifted to the high temperature side gradually. With the increase of heating rate, the ignition, the burnout temperature and the integrated combustion characteristic index improved. There existed synergistic interaction of co-carbonization products in the combustion process. With the increase of co-carbonization temperature(180-260℃), both fixed carbon content and combustion characteristic index S increased first and then decreased, the minimum ignition energy(Eαi) had an opposite trend. In this study, municipal solid waste were mixed with peanut shells at mass ratio of 5:5, under the conditions of co-hydrothermal carbonization temperature 220℃, the heating rate 40℃/min, co-carbonization product had the highest combustion characteristic index(5.727×10-6 min-2·℃-3) and the lowest ignition energy(89.55 kJ/mol).

Key words: municipal solid waste, peanut shell, co-carbonization, combustion characteristics, minimum ignition energy

CLC Number: