危险废物工业指标热失重性能研究  

Study on the Thermo Gravimetric Performance of Industrial Indicators for Hazardous Waste

作　　者：宋西义 崔磊 张少篪 邓智伟 SONG Xiyi;CUI Lei;ZHANG Shaochi;DENG Zhiwei(Jiangsu Yongzhiqing Industrial Wastes Disposal Co.,Ltd.,Suzhou 215500,China;Atls Environmental Protection Technology(Linyi)Co.,Ltd.,Linyi 276000,China)

机构地区：[1]江苏永之清固废处置有限公司,江苏苏州215500 [2]奥特拉斯环保科技(临沂)有限公司,山东临沂276000

出　　处：《中国资源综合利用》2024年第10期39-44,48,共7页China Resources Comprehensive Utilization

摘　　要：危险废物工业指标包括水分、挥发分、固定碳和灰分,其热失重性能对回转窑危险废物处置的配伍和工艺调整具有重要影响。试验研究3种模拟物、5种复配危险废物和7种典型危险废物的热失重性能。结果表明,危险废物质量损失可以分为3个阶段,水分失重段温度为200~300℃,挥发分失重段温度为450~543℃,固定碳失重段温度为759~774℃。水分干燥和挥发分挥发可能同时发生,失重较快,挥发分挥发和固定碳燃尽不会同时发生,固定碳失重较慢。危险废物水分和挥发分失重占总时间的10%~20%,而固定碳的失重占总时间的80%~90%。在配伍过程中,要做好工业指标控制。总体来说,水分含量应小于20%,挥发分含量为50%~70%,固定碳含量为5%~10%,灰分含量为15%~20%。研究结果可指导回转窑危险废物处置过程的配伍,调整焚烧工艺。The industrial indicators of hazardous waste include moisture,volatile matter,fixed carbon,and ash content,and their thermo gravimetric performance has a significant impact on the compatibility and process adjustment of rotary kiln hazardous waste disposal.The thermal gravimetric properties of three simulated substances,five complex hazardous wastes,and seven typical hazardous wastes are studied in the experiment.The results indicate that the quality loss of hazardous waste can be divided into three stages,the temperature of the water loss stage is 200~300℃,the temperature of the volatile matter loss stage is 450~543℃,and the temperature of the fixed carbon loss stage is 759~774℃.Moisture drying and volatile matter volatilization may occur simultaneously,resulting in rapid weight loss,and volatile matter volatilization and fixed carbon burnout will not occur simultaneously,while fixed carbon weight loss is slower.The weight loss of hazardous waste moisture and volatile matter accounts for 10%~20%of the total time,while the weight loss of fixed carbon accounts for 80%~90%of the total time.During the compatibility process,it is important to ensure proper control of industrial indicators.Overall,the moisture content should be less than 20%,the volatile matter content should be 50%~70%,the fixed carbon content should be 5%~10%,and the ash content should be 15%~20%.The research results can guide the compatibility of hazardous waste disposal processes in rotary kilns and adjust incineration processes.

关 键 词：危险废物 回转窑 工业指标 热失重性能 

分 类 号：X705[环境科学与工程—环境工程]