城市固体废物 (MSW) 典型组件的燃烧行为和激活能量预测
Yu Wang1, Shuo Ma2, Kexun Wang1
1School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China.
Journal of environmental management
|November 18, 2025
概括
这项研究模拟了城市固体废物燃烧,揭示了塑料具有最高的激活能量. 一个新的模型准确地预测了优化废物转化能源应用的燃烧动力学.
科学领域:
- 燃烧科学 燃烧科学
- 废物管理工程 废物管理工程
- 化学动力学 化学动力学
背景情况:
- 城市固体废物 (MSW) 的燃烧是复杂的,因为不同的组件组成 (食品废物,纸张,塑料).
- 精确的动力模型对于优化MSW燃烧过程和能量回收至关重要.
- 现有的模型往往缺乏特定组件的数据,导致燃烧行为预测的不确定性.
研究的目的:
- 为MSW燃烧开发基于组件的激活能量模型.
- 研究单个和共同燃烧的MSW组件的燃烧动力学和协同效应.
- 建立各种MSW组合的激活能的预测模型.
主要方法:
- 食品废弃物 (蔬菜,水果),纸张和塑料在5°C·分钟-1的加热速度下进行热重度测量分析 (TGA).
- 考茨-雷德芬方法用于确定单个和共同燃烧的动力机制.
- 评估协同效应的差分方法和用于激活能量预测的二次模型.
主要成果:
- 蔬菜的燃烧遵循扩散控制的机制;其他是反应控制的.
- 塑料表现出最高的激活能 (172.70 kJ·mol-1),明显高于其他组件.
- 蔬菜和塑料的联合燃烧显示出最强的协同效应;水果和纸张显示出最小的协同效应.
- 开发的二次模型准确地预测了激活能量 (R2 = 98.32%).
结论:
- 基于组件的激活能量模型为MSW燃烧动力学提供了准确的预测.
- 了解特定组件的燃烧行为和协同效应是优化能量回收的关键.
- 结果指导调整空气温度,体积和停留时间,以实现高效的MSW燃烧.
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