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城市固体废物焚烧 (MSWI) 的化和固化过程的过程勘探,使用水平旋风炉的飞

Menglong Bai¹, Chuanming Du¹, Yijun Zhao¹

¹School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China.

Waste management (New York, N.Y.)

|August 26, 2024

概括

化城市固体废物焚烧 (MSWI) 飞灰,特别是来自循环流化床 (CFB) 炉的飞灰,有效地固定重金属. 添加CFB飞灰或机械格炉 (MGF) 底灰可以提高化潜力,从而减少危险废物.

科学领域:

环境科学与工程环境科学与工程
废物管理和回收利用
材料科学材料科学材料科学

背景情况:

城市固体废物焚烧 (MSWI) 产生飞灰,这是一种含有重金属的危险废物.
有效的处理方法对于减少MSWI飞灰对环境的影响至关重要.
化是一种有前途的技术,用于固定重金属并减少飞灰的数量.

研究的目的:

为了研究循环流化床 (CFB) 和机械炉 (MGF) 焚烧炉的化潜力和固化效应.
为了评估MSWI飞灰大规模化的可行性,使用水平旋风炉.
为了确定飞灰特性对重金属固定和化特性的影响.

主要方法:

在水平管式加热炉中,CFB和MGF飞灰的试验化.
横向旋风炉的建设和运营,用于大规模的MSWI飞加工.
融特性,无形含量和重金属出度的表征.

主要成果:

CFB飞灰达到高无形含量 (高达92.37%) 与有限的重金属挥发 (Zn,Pb,Ni<30%).
MGF飞灰显示"成",Pb出超出限值;然而,其他重金属 (Cu,Zn,Cd,Pb,Cr,Ni) 在Slag II显著挥发 (>50%,Cr高达85%).
将80%的CFB飞灰或50%的MGF底灰混合到MGF飞灰中,显著改善了化潜力并减少了危险废物. 在旋风炉中进行大规模化,产生了>93%的无形含量.

结论:

化是固化MSWI飞灰的有效方法,CFB飞灰显示重金属的优越固定性.
优化性和结合合适的飞灰混合物可以提高融效率并减少危险废物.
颗粒尺寸分布和炉子运行参数对于在大型应用中实现最佳化效果至关重要.

关键词:

横向的旋风化炉使用在MSWI飞灰飞.融化潜力的融化潜力规模融化融化的规模.固化效应是一种固化效应.

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