摘要
用热重分析仪(TG)研究了典型高热值危险废弃物———染料残渣的热解过程,分析了在程序升温下的热解失重变化情况;同时用红外光谱仪(FTIR)对热解气态产物进行实时跟踪检测分析,研究了热解产生的CO2、CO、SO2、HCN等各种气体浓度随时间(热重温度)的变化。此种废弃物热解过程中,SO2的排放在较低温度(257℃附近)就出现高峰。热解中还出现了一个短暂的有毒气体氰化氢析出峰,可将该温度段热解气体在有氧环境下燃烧使之分解破坏后排放。可以考虑绝氧干馏燃前脱除污染物的焚烧方法。
Pyrolysis process characteristics of a typical hazardous waste were studied using thermogravimetric analysis, The temperature programming process showed a remarkable weight-loss peak, The flue gas was detected by the realtime FTIR during the whole process. The concentration variations of CO2 ,CO ,SO2 ,HCN were identified, The majority of element S let out by SO2 formed around 257 ℃, A shape peak of toxic HCN came forth synchronously. These flue gases can be burned in an oxygenic atmosphere, The dry distillation is propitious to handle the waste in engineering practice.
出处
《能源工程》
2006年第4期39-43,共5页
Energy Engineering
基金
国家自然科学基金资助项目(50276055)
关键词
危险废弃物
热解
染料残渣
hazardous wastes
pyrolysis
dye residue
