基于DTA方法的污泥与煤混合物燃烧反应动力学  

Combustion reaction kinetics of sewage sludge/coal mixtures based DTA method

作　　者：李培生[1,2] 李洁[1,2] 胡益[1,2] 余万[1,2] 

机构地区：[1]武汉大学动力与机械学院 [2]污淤泥研究中心,湖北武汉430072

出　　处：《华中科技大学学报（自然科学版）》2008年第6期119-121,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：中国博士后科学基金资助项目(20060400858);湖北省科技攻关项目(2007AA402C01);能源的安全与清洁利用北京市重点实验室开放基金资助项目;武汉大学动力与机械学院青年科学基金资助项目

摘　　要：选取污泥与煤的混合物在6个质量分数水平下进行了差热分析,运用Achar-Brindley-Sharp-Wend-worth法得到了反应动力学参数.表明反应过程由类挥发分物质的燃烧和类固定碳物质的燃烧两个阶段组成,混合物的燃烧特性与煤和污泥的特性有关,其反应特性是煤和污泥共同作用的结果.混合物的差热曲线可由煤和污泥单独的曲线与污泥质量分数加权计算得到,煤和污泥混合物燃烧反应过程中各自保持独立性.One chosen sewage sludge co-combusted with one coal with 6 different mixing ratios was investigated through differential thermal analysis methods （DTA）. Reaction kinetics parameters have been settled applying the Achar-Brindley-Sharp-Wendworth method of DTA. It was shown that reaction process of mixtures was composed of two phases-similar volatile combustion and similar fixed carbon combustion, combustion characteristics of mixtures were relevant to characteristics of both coal and sewage sludge, and their reactivity was affected by both. DTA curves of mixtures were obtained by weighted calculation of individual curve of coal and sewage sludge with the mass ratio of sewage sludge, which demonstrated that coal and sewage sludge keeps its own characteristic in combustion reaction process.

关 键 词：燃烧 污水污泥 煤 差热分析 反应 

分 类 号：TK16[动力工程及工程热物理—热能工程]