从回收飞灰中产生二氧化碳的演变,这些飞灰被送回城市固体废物炉
Xiangrui Kong1,2, Biao Wang3, Mengyu Zhang3
1China Urban Construction Design & Research Institute Co., Ltd., , Beijing, 100120, China.
Environmental monitoring and assessment
|October 21, 2025
概括
将飞灰回收到格炉中有效地通过热处理去除二氧化. 一个经过验证的数值模型模拟了这一过程,实现了99.0%的二氧化碳分解率,以改善固体废物管理.
科学领域:
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
- 燃烧科学 燃烧科学
背景情况:
- 飞灰中的二氧化物是炉中固体废物焚烧的重要污染物.
- 用热处理回收飞灰提供了一种有效的二氧化物去除策略.
- 现有的研究缺乏关于二氧化分解和飞灰形成的详细动力学,以及对炉内行为的理解.
研究的目的:
- 开发和验证一个数值模型来模拟二氧化物演变从回收飞灰在格炉中的二氧化物.
- 调查影响循环飞灰中二氧化在炉内热分解效率的因素.
- 解决了解二氧化碳动力学和炉内热分解行为方面的局限性.
主要方法:
- 整合FLIC,Fluent和MATLAB以创建一个数值模拟模型.
- 为了考虑到内部扩散效应,对颗粒化飞灰的动力参数进行了修改.
- 用实验室实验和现场测试验证模型的验证.
主要成果:
- 修改后的模型准确地预测了颗粒化飞灰中的二氧化物行为.
- 模拟实现了炉出口的99%的最终二氧化物分解率,与现场测量一致.
- 发现顶层食飞灰和更高的炉温可以增强二氧化物分解.
结论:
- 开发的数值模型为研究飞中的二氧化在炉内热分解提供了可靠的工具.
- 优化养策略和升高的温度可以显著提高二氧化去除效率.
- 这些发现支持对含有二氧化碳的飞灰进行炉内热处理的工业应用.
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