In this study, an in situ weighting system was used to study the thermal behavior of dried municipal sludge (MS) in the flue gas exiting from calcium‐looping (Ca‐L) process. The results showed that mass loss peak, initial decomposition temperature, and decomposition complete temperature moved to high‐temperature zone with increased heating rate. However, they moved to low‐temperature zone at higher O₂ and CO₂ concentrations. Apparent activation energy (E) and preexponential factor (A) increased with the increase of heating rate and O₂ concentration and decreased with the increase of CO₂ concentration. The heating rate has the greatest effect on the thermal decomposition of dried MS. With the heating rate increasing, the maximum mass loss peak occurred from 301 to 493°C, the corresponding E and A increased from 36.14 to 45.69 kJ mol⁻¹ and from 29.58 to 321.4 min, respectively. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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钙循环（Ca‐L）处理的烟气中城市污泥的热化学反应和动力学特性研究

在这项研究中，使用原位称重系统研究了钙循环（Ca-L）过程中排出的干市政污泥（MS）在烟道气中的热行为。结果表明，随着加热速率的增加，质量损失峰，初始分解温度和分解完成温度移至高温区。但是，它们以较高的O ₂和CO ₂浓度移至低温区。表观活化能（E）和前指数因子（A）随加热速率和O ₂浓度的增加而增加，随CO ₂的增加而减少浓度。加热速率对干燥MS的热分解影响最大。随着升温速率的增加，最大质量损失峰从301升高到493°C，相应的E和A从36.14 kJ mol ^-1增加到45.69 kJ mol ^-1，从29.58增加到321.4 min。©2020年化学工业协会和John Wiley＆Sons，Ltd.