National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China.
National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.
Waste Manag. 2020 Feb 1;102:932-938. doi: 10.1016/j.wasman.2019.12.012. Epub 2019 Dec 16.
In this paper, BO was used as a fluxing agent to reduce the melting temperature of municipal solid waste incineration (MSWI) fly ash and promote the glassy phase formation. Ash fusion temperature (AFT) test, atomic absorption spectroscopy (AAS), X-ray diffraction(XRD), scanning electron microscope (SEM) and thermodynamic calculation were carried out. The results showed that the flow temperature decreased from 1211 °C to 986 °C with an increase in the BO content from 0 to 15 wt%. The melting slag lead to a decrease in the surface area and an increase in the mass transfer resistance of heavy metals. Thus, the agglomeration of the fly ash particles became easier with the reduced viscosity of the liquid slag. The volatilization of Pb, Cd and Zn in fly ash was inhibited. The leaching behavior of heavy metals was evaluated, the results indicated that Zn and Cu were stable whereas the Pb and Cd were soluble in glassy slag.
本文采用 BO 作为助熔剂来降低城市生活垃圾焚烧飞灰的熔融温度并促进玻璃相的形成。采用灰熔融温度（AFT）试验、原子吸收光谱（AAS）、X 射线衍射（XRD）、扫描电子显微镜（SEM）和热力学计算等手段对其进行了研究。结果表明，随着 BO 含量从 0 增加到 15wt%，熔融温度从 1211°C 降低到 986°C。熔融渣会降低重金属的比表面积并增加传质阻力，从而使飞灰颗粒更容易团聚，同时降低渣的粘度。飞灰中 Pb、Cd 和 Zn 的挥发受到抑制。评估了重金属的浸出行为，结果表明 Zn 和 Cu 是稳定的，而 Pb 和 Cd 则可溶解于玻璃态渣中。
