Effect of cooling rate on the partition of heavy and alkali metals during waste incineration
Effect of cooling rate on the partition of heavy and alkali metals during waste incineration
复制标题
冷却速率对垃圾焚烧过程中重金属和碱金属分配的影响
DOI：
10.1002/apj.486
复制
发表时间：
2012-07
影响因子：
1.8
通讯作者：
Jun Han,Linbo Qing,Minghou Xu
中科院分区：
文献类型：
--
作者：
Jun Han,Linbo Qing,Minghou Xu
冷却速率是影响气相金属化合物在垃圾焚烧炉下游分配的最重要因素。在这项工作中，在实验室规模的焚烧炉中进行了实验，以揭示冷却速率与重金属和碱金属的分配之间的关系。实验结果表明，在26-160 °C/s的温度范围内，冷却速率的增加对石英过滤器捕集重金属和碱金属有负面影响。较高的冷却速率导致形成较小的颗粒，这些颗粒不容易被二氧化硅过滤器捕获。在600-800 °C温度范围内，Cu气固相变的最佳冷却速率约为53.3 °C/s，Na和K的最佳冷却速率分别为26.67和26.67 °C/s。通过扫描电子显微镜/使用X射线的能量色散（SEM-EDX）观察到的形态证实了大量的蒸气矿物质或金属通过在第二和第三过滤器中的颗粒表面上的成核或冷凝而转化为固相或液相。此外，第二过滤器中Pb的质量分数高达37.0%，这意味着通过多段过滤系统回收重金属和碱金属是可行的。版权所有© 2010科廷科技大学和约翰威利父子有限公司。
The cooling rate is the most important factor affecting the partition of vapor metallic compounds in the downstream of waste incinerator. In this work, an experiment was performed in a bench-scale incinerator to reveal the relationship between the cooling rate and the partition of heavy and alkali metals. Experimental results showed that the increase in cooling rate had a negative effect on the capture of heavy and alkali metals by silica filter in the temperature range of 26–160 °C/s. The higher cooling rate results in the formation of smaller particles, which are not easy to be captured by the silica filter. The optimum cooling rate for Cu gas–solid transformation was about 53.3 °C/s in the temperature range of 600–800 °C, and that for Na and K were 26.67 and 26.67 °C/s, respectively. The morphology observed by scanning electron microscope/energy dispersive using X-ray (SEM-EDX) confirmed that a large amount of vapor mineral matter or metals were transformed into solid or liquid phase by nucleation or condensation on the surface of the particles in the second and third filters. Moreover, the mass fraction of Pb in the second filter was as high as 37.0%, which means that the recovery of heavy and alkali metals by the multi-section filter system is feasible. Copyright © 2010 Curtin University of Technology and John Wiley & Sons, Ltd.
登录
查看更多内容
影响因子：
3.9
作者：
P. Tang;Y.C. Zhao;D. Chen;F. Xia
通讯作者：
P. Tang;Y.C. Zhao;D. Chen;F. Xia
影响因子：
0.2
作者：
H. Yao;Hirofumi Minato;I. Mkilaha;I. Naruse
通讯作者：
H. Yao;Hirofumi Minato;I. Mkilaha;I. Naruse
影响因子：
5.3
作者：
B. Miller;R. Kandiyoti;D. Dugwell
通讯作者：
B. Miller;R. Kandiyoti;D. Dugwell
DOI：
10.1016/j.proci.2004.07.047
发表时间：
2005
期刊：
--
影响因子：
--
作者：
H. Yao;I. Naruse
通讯作者：
H. Yao;I. Naruse
影响因子：
1.8
作者：
M. Lopes;P. Abelha;J. Oliveira;I. Cabrita;I. Gulyurtlu
通讯作者：
M. Lopes;P. Abelha;J. Oliveira;I. Cabrita;I. Gulyurtlu