生活垃圾与花生壳水热炭化物的燃烧特性研究

以生活垃圾（MSW）与花生壳（PS）共水热炭化产物的理化性质研究为切入点，采用热重分析法探究炭化物的燃烧特性及反应动力学，结果表明：炭化物在燃烧过程中出现3个失重峰，第二个失重峰的损失程度最大，超过了燃烧总失重的50%。同一炭化温度条件下，随着PS掺混占比的增加，燃烧越彻底，热重曲线逐渐偏向高温区。随着升温速率的提高，炭化物的着火温度、燃尽温度、燃烧特性指数均提高。MSW与PS混合共水热炭化的炭化物在燃烧过程中存在协同作用。生活垃圾掺混花生壳，随着炭化温度的升高（180~260℃），固定碳含量与燃烧特性指数S均先增后减，最小着火能量（E_αi）先减后增。MSW与PS按质量比5∶5掺混，在220℃的条件下共炭化，升温速率为40℃/min时，其产物220MSW5PS5的燃烧特性指数最高（5.727×10^-6 min^-2·℃^-3），最小着火能量最低（89.55 kJ/mol）。

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

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(E_αi) 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).