
1. 广东粤电云河发电有限公司
2. 华中科技大学煤燃烧与低碳利用全国重点实验室
Published:2024
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江平, 于洁. 聚烯烃基复合塑料热解动力学特性[J]. 2024, 16(4): 132-139.
为了掌握复合废塑料的热裂解机制,对2种不同的复合塑料在不同升温速度下进行了热重实验。采用KAS和FWO方法对热重实验进行动力学分析,计算获得了样品的活化能分布;采用Malek法和C-R法相结合的方法,获得了最适合的热解动力学机理函数。结果表明:PE/PET和PE/PA样品热解过程分为两步反应,PET和PA要先于PE裂解;PE/PET样品热解后会生成少量焦炭;PE/PET样品活化能为221.62~280.67 kJ/mol
PE/PA样品活化能为202.86~266.63 kJ/mol
2种塑料样品的活化能随着热解反应的进行均呈现上升趋势;CPW1和CPW2热解反应符合R2几何收缩模型。通过本研究,掌握了复合塑料的热解机制,获得了反应活化能和反应模型,对于复合塑料的热解利用具有重要意义。
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