摘要
在不同氧气浓度和样品粒径条件下,采用热重分析法对3种不同行业的工业污泥进行了实验研究。结果表明,工业污泥着火和燃烧特性好、着火温度低,但燃烧不剧烈,综合燃烧性能不高。适当增加氧气浓度,燃烧非基元反应增多,着火和燃尽性能改善。粒径大小对气体的扩散和热传导有较大影响,随着粒径减小,反应区间变窄,失重量增加,燃烧失重速率峰值增大。
Under the condition of various oxygen concentrations and particle diameters of the sample,the thermogravimetric analytic method was used to conduct an experimental study of industrial sludge in three different industrial sectors.It has been found that the industrial sludge has good ignition and combustion characteristics and a low ignition temperature but its combustion is not intense and has low comprehensive combustion performance.To properly increase the oxygen concentration will increase the non-elementary reactions in the combustion and improve the ignition and burn-out performance of the combustion.The particle size has a big influence on the diffusion of gases and heat transfer.With a decrease of the particle diameter,the reaction interval will be narrowed and with an increase of the weight loss,the combustion weight loss rate peak value will also increase.
出处
《热能动力工程》
CAS
CSCD
北大核心
2012年第6期726-731,730-731+742,共6页
Journal of Engineering for Thermal Energy and Power
基金
中央高校基本科研业务费基金资助项目(CDJZR10140011)
重庆市自然科学重点基金资助项目(2009BA6067)
关键词
工业污泥
热重分析
燃烧特性
氧浓度
粒径
industrial sludge,thermogravimetric analysis,combustion characteristics,oxygen concentration,particle diameter
