城市垃圾焚烧飞灰高温熔融处理实验研究  

Experimental Study on Melting Treatment of Fly Ash of MSW

作　　者：张楚 王爽[2] Zhang Chu;Wang Shuang(Shanghai Leading Capital Ltd.,Shanghai 200050,China;School of Energy and Power Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]上海力鼎投资管理有限公司,上海200050 [2]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《辽宁石油化工大学学报》2019年第6期31-35,共5页Journal of Liaoning Petrochemical University

基　　金：中国博士后科学基金面上项目(2018M630529)

摘　　要：利用高温管式炉对生活垃圾焚烧飞灰进行了高温熔融特性分析,包括飞灰在高温下的物质迁移和熔融玻璃体的浸出分析。结果表明,随着反应温度增加,飞灰熔融产生的熔渣相对原始飞灰量依次下降,飞灰高温挥发物增加。经检测,玻璃体满足危险废弃物毒性浸出标准。熔融后的玻璃体密度是飞灰堆积密度的5倍,有很好的减容效果。飞灰中大部分Cl元素挥发至气相和二次飞灰中,Cl-进入气相对熔融系统造成的腐蚀等影响将是未来需解决的工艺问题。Melting characteristics of MSW incineration fly ash was analyzed by high temperature tubular furnace in the paper,including the material migration of fly ash at high temperature and the leaching analysis of molten glass.The results show that with the increase of reaction temperature,the molten slag produced by fly ash melting decreases relative to the original fly ash,and the volatile matter of fly ash increases at high temperature.The density of the melt vitreum is 5 times more than the stacking density of fly ash,which has good volume reduction effect.The content of chloride ion in fly ash slag became less,most chlorine elements volatilized into gas phase and secondary fly ash.The influence of the Cl-entering gas on the corrosion caused by the melting system will be a process problem to be solved in the future.

关 键 词：飞灰 熔融固化 气相 熔渣 

分 类 号：X705[环境科学与工程—环境工程]