氮气气氛下城市污水厂污泥热解特性  

Pyrolysis properties of municipal sewage sludge under N_2 atmosphere

作　　者：翟云波[1] 魏先勋[1] 曾光明[1] 张德见[1] 楚凯锋[1] 

机构地区：[1]湖南大学环境科学与工程系,湖南长沙410082

出　　处：《现代化工》2004年第2期36-38,40,共4页Modern Chemical Industry

基　　金：国家"863"高技术资助项目(No.2001AA6440-20);国家杰出青年科学基金项目(50225926);高等学校博士学科点专项科研基金资助项目(20020532017)

摘　　要：为了解城市污水厂污泥在氮气气氛下进行热解的特性,利用热重分析结合傅立叶红外光谱等方法对长沙某污水厂干燥污泥进行了研究。实验结果表明,在15℃/min和30℃/min的升温速率下,干燥污泥存在3个阶段的失重过程,结合FITR谱线可知,每一阶段的失重都有CO2和水析出。同时对实验数据进行了处理,采用微分法确定了热解反应的机理方程,并求出反应动力学参数活化能E和频率因子A。In order to obtain the pyrolysis properties of sewage sludge with the presence of nitrogen, the thermogravimetric analysis and FITR methods were used to study the properties of dried sewage sludge from a wastewater treatment plant in Changsha, Hunan province. The experimental results show that there are 3 stages of lost weight under the rising temperature rates of 15°C/min and 30°C/min to be observed. The FITR shows CO2 and H2O appear in every stage. After dealing with experimental data and using differential coefficient methods, the mechanical equation of pyrolysis reaction and the kinetics parameter E and A were obtained.

关 键 词：污水污泥 热重分析 热解 动力学参数 

分 类 号：X703.1[环境科学与工程—环境工程]