HUANG Shiqing, ZHANG Houjian, ZHAO Fuyi. Influencing factors of fluidity of fly ash from waste incineration[J]. Thermal power generation, 2013, 42(10): 83-85.DOI:
垃圾焚烧飞灰流动性影响因素研究
摘要
为解决垃圾焚烧飞灰在稳定化处理过程中的堵灰问题
通过采集干法烟气处理系统产生的飞灰及其与锅炉底灰的混合样
分析飞灰的粒径、形态及含水率对流动性的影响以及温度与含水率的关系。结果表明:在干法烟气净化系统中
飞灰的流动性受其细度、形态及含水率的影响
混合锅炉底灰有利于改善飞灰的流动性;飞灰吸水性能强
在25℃、相对湿度为60%的条件下
其平衡含水率达4.37%;为防止飞灰吸潮而导致流动性降低
建议贮存时应控制其温度在85℃以上
并尽快进行卸灰处理。
Abstract
Aimed at solving the clogging problems occurred during the fly ash stabilization treatment process
the fly ash and bottom ash was collected at different sampling points in dry flue gas treatment system
and then the effect of fly ash particle size
shape and moisture content on its fluidity was investigated.Moreover
the relationship between temperature and the moisture content was also analyzed.The results showed that
in the dry flue gas cleaning system
the fluidity of fly ash was affected by its fineness
shape and moisture content.Combining with the bottom ash collection would help to improve the fluidity of the fly ash.The fly ash had strong water absorption ability
at 25℃ and relative humidity of 60%
the balance moisture content in fly ash could reach 4.37%.In order to prevent fly ash from absorbing the moisture which will result in decrease in fluidity
its storage temperature should be controlled above 85℃