钢铁炉窑协同处置冶金及市政难处理固废技术路线

Technology route research of metallurgical and urban solid waste co-processing using steel industrial furnace

无害化和资源化仍然是当前固废处置的重要方向,尤其在当前全力实现“碳达峰、碳中和”目标的大背景下,“以废代碳”还是降低碳排放的重要途径。针对当前固废处置出现的处置成本高、资源化利用不充分、邻避效应严重的现状,提出了利用钢铁炉窑,特别是烧结球团工序协同处置冶金及市政难处理多源固废的思路,提出了建立多源固废物质属性、能源属性、毒害属性多维识别指标体系与最佳处置路径的生态化适配原则;基于钢铁工业窑炉特性及固废属性,构建了火法/湿法预处理耦合热工制度优化的冶炼主工艺协同处置固废的技术路线,及基于北斗-物联网的区域性固废协同处置智慧平台,为冶金及市政固废生态化协同处置提供方向指导和技术参考。

Hazard-free and reutilization treatment are still the main directions of solid waste disposal,especially,under the background which achieving"peak carbon dioxide emissions carbon neutral"target,"replacing carbon by waste"is also an important route to reduce carbon emission.However,in current situations,the disposal cost of waste is still high,reutilization of waste is still insufficient,"NOT IN MY BACKYARD"effects is serious.Therefore,the new plot of co-processing metallurgical and urban difficult-to-process solid waste using steel industrial furance,especially sintering and pellitizing process,was presented.A new multi-dimension index system based on material property,energy property,hazardous property,and ecological match law based on best disposal route,should be established.A new co-processing technological route using smelting process,including Fire/Mositure pretreatment method coupling with thermal regulation optimizing,was built.Besides,the conception of reginal intelligent co-processing platform of solid waste based on Big Dipper and Web of Things was shown.The direction guidance and technological reference for co-processing of multi-source solid waste were given.