在氧燃料和空气燃烧条件下,在垂直式废物焚烧炉中,对氧氧化物排放的计算流体动力学模拟
Ahmed Abd Alraheem Suliman Esaa1, In-Hee Hwang2, Yuki Ogaya1
1Laboratory of Solid Waste Disposal Engineering, Graduate School of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Japan.
Waste management (New York, N.Y.)
|May 10, 2025
概括
城市固体废物焚烧中的氧化燃料燃烧与空气燃烧相比,减少了12%的氧化 (NOX) 排放. 这种改进与更高的一氧化碳水平有关,从而提高了NOX的减少,提供了可持续的废物转化能源解决方案.
科学领域:
- 环境科学与工程环境科学与工程
- 燃烧科学 燃烧科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 氧化燃料的燃烧被认为可以在废物焚烧中增强碳捕获.
- 氧化燃料燃烧对城市固体废物焚烧中的氧化 (NOX) 排放的影响需要进一步调查.
研究的目的:
- 为了研究和量化NOX在空气和氧燃料燃烧MSW的生成.
- 在垂直式废物焚烧炉中比较空气和氧燃料燃烧条件之间的NOX排放.
主要方法:
- 结合实验和计算流体动力学 (CFD) 建模方法.
- 使用废物燃料 (RDF) 进行热解和燃烧实验,以确定NOX前体 (NH3和HCN).
- 对于RDF和煤炭的热降解动力学进行热重力测量分析 (TGA).
- 在0D和2DCF模型 (COMSOL多物理) 中使用Kilpinen-97机制对NOX形成的动态建模.
主要成果:
- 与空气燃烧相比,氧化燃料的燃烧减少了12%的NOX排放.
- 在氧化燃料条件下的更高一氧化碳 (CO) 度通过激素驱动反应促进了NOX的减少.
- 2D CFD 建模表明,由于改善了烟气混合,NOX 排放量低于 0D 建模.
结论:
- 氧化燃料燃烧是减少MSW焚烧中的NOX排放的可行策略.
- 该研究强调了氧燃料燃烧在废物转化能源 (WtE) 工厂同时减少NOX和捕获碳的潜力.
- 这些发现支持氧燃料燃烧作为通往更可持续的废物管理和能源回收的途径.
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