Liu Guangrui, Song Huijuan, Wu Jinhu
Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China.
Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
Waste Manag. 2015 Jul;41:128-33. doi: 10.1016/j.wasman.2015.03.042. Epub 2015 Apr 16.
Thermogravimetric experiments of two different industrial sludge samples were carried out with non-isothermal temperature programs. The results indicated that the pyrolysis process contains three obvious stages and the main decomposition reaction occurred in the range of 200-600°C. The distributed activation energy model (DAEM) was also proposed describing equally well the pyrolysis behavior of the samples. The calculated activation energy was ranged from 170 to 593kJ/mol and 125 to 756kJ/mol for SLYG (sludge sample from chemical fiber factory) and SQD (sludge sample from woody industry), respectively. The reliability of this model not only provided good fit for all experiments, but also allowed accurate extrapolations to relative higher heating rates. Besides, the FTIR measurement was also used to further understand the relationship between pyrolysis behavior and chemical structures for industrial sludge.
采用非等温温度程序对两种不同的工业污泥样品进行了热重实验。结果表明，热解过程包含三个明显阶段，主要分解反应发生在200 - 600°C范围内。还提出了分布活化能模型（DAEM），该模型能很好地描述样品的热解行为。对于SLYG（化纤厂污泥样品）和SQD（木材工业污泥样品），计算得到的活化能分别为170至593kJ/mol和125至756kJ/mol。该模型的可靠性不仅能很好地拟合所有实验，还能准确外推到相对较高的加热速率。此外，还利用傅里叶变换红外光谱（FTIR）测量进一步了解工业污泥热解行为与化学结构之间的关系。
