危险废物灰渣玻璃化处理及资源化利用  

Resource recovery of vitrification products of hazardous waste ash residue

作　　者：李小锋 于伟锋 张召锋 孟祥琪 王肖哲 LI Xiaofeng;YU Weifeng;ZHANG Zhaofeng;MENG Xiangqi;WANG Xiaozhe(SCEGC Installation Group Co.,Ltd.,Xi'an 710068,Shaanxi Province,China)

机构地区：[1]陕西建工安装集团有限公司,陕西西安710068

出　　处：《化学工程》2024年第4期7-10,16,共5页Chemical Engineering(China)

基　　金：陕西省2022年重点研发计划“两链”融合企业(院所)联合重点专项(2022LL-JB-15)。

摘　　要：危险废物焚烧、热解等过程产生的飞灰和底渣仍属于危险废物,其处理会占用大量土地。分析危险废物灰渣组分及熔融特性,设计相应的富氧燃烧熔融工艺、余热回收工艺及烟气净化工艺。根据固体废物玻璃化处理产物的判定、环境安全质量要求、应用技术要求,确定熔融工艺玻璃化产物的资源化利用方向。可以得知:燃料式富氧燃烧熔融玻璃化处理工艺能够固化重金属并完全分解二噁英,解决危险废物填埋二次污染的问题;系统烟气余热可回收利用以降低系统能耗,熔融玻璃化处理产物可替代建筑材料资源化再利用。The fly ash and bottom slag generated from hazardous waste incineration,pyrolysis processes are still hazardous waste.Its disposal takes up a lot of land.The composition and melting characteristics of hazardous waste ash and slag were analyzed,and the corresponding oxygen enriched combustion melting process,waste heat recovery process and flue gas purification process were designed.According to the judgment of solid waste vitrification products,environmental safety quality requirements and application technical requirements,the resource utilization direction of vitrification products of melting process were determined.The following conclusions are drawn:the fuel type oxygen enriched combustion melting vitrification process can solidify heavy metals and completely decompose dioxins,solving the problem of secondary pollution in hazardous waste landfill.The waste heat of system flue gas can be recycled to reduce system energy consumption,and the molten vitrification products can replace building materials for resource reuse.

关 键 词：固体危险废物 液态排渣焚烧 玻璃化处理 废物再利用 

分 类 号：X705[环境科学与工程—环境工程]