Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, School of Electric Power, South China University of Technology, 510640 Guangzhou, China.
Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, School of Electric Power, South China University of Technology, 510640 Guangzhou, China.
Bioresour Technol. 2017 Nov;244(Pt 1):1024-1030. doi: 10.1016/j.biortech.2017.08.075. Epub 2017 Aug 17.
The volatilization of three heavy metals (Cd, Cr and Zn) during food waste and PVC and their blending combustion in N/O or CO/O atmosphere in a lab-scale tubular furnace was investigated. The concentration of heavy metals in combustion ash was decreased with the increment of furnace temperature in most cases. The replacement of 80N/20O by 80CO/20O decreased the volatilization rate of Cd and Cr, but increased Zn. The increased amount of PVC added into food waste led to less content of Zn in combustion ash, 5% PVC added into food waste decreased the volatilization rate of Cr but 15% PVC added led to the higher volatilization. The volatilization rate of Zn in 70CO/30O was significantly lower than in 85CO/15O or 80CO/20O. The result contributes to the understanding of heavy metal volatilization during incineration and emission control of MSW oxy-fuel combustion.
研究了在实验室规模的管式炉中，N/O 或 CO/O 气氛下，三种重金属（Cd、Cr 和 Zn）在食物垃圾和 PVC 及其混合物燃烧过程中的挥发情况。在大多数情况下，随着炉温的升高，燃烧灰中重金属的浓度降低。用 80CO/20O 替代 80N/20O 降低了 Cd 和 Cr 的挥发率，但增加了 Zn 的挥发率。向食物垃圾中添加更多的 PVC 会导致燃烧灰中 Zn 的含量减少，添加 5%的 PVC 会降低 Cr 的挥发率，但添加 15%的 PVC 会导致更高的挥发率。在 70CO/30O 中的 Zn 挥发率明显低于在 85CO/15O 或 80CO/20O 中的 Zn 挥发率。该结果有助于理解垃圾在富氧燃烧过程中的重金属挥发和排放控制。
