劣质煤掺混生活污泥的富氧燃烧特性  

Combustion Characteristics of Inferior Coal and Sludge Mixture in Oxygen Enrichment Atmosphere

作　　者：闫云飞[1,2] 张磊[2] 张力[1,2] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400030 [2]重庆大学动力工程学院,重庆400030

出　　处：《工程热物理学报》2013年第8期1596-1599,共4页Journal of Engineering Thermophysics

基　　金：中央高校基本科研业务费资助项目(No.CDJZR10140011);重庆市自然科学基金重点项目(No.2009BA6067)

摘　　要：采用热重分析方法研究了不同氧气浓度下城市生活污泥、劣质煤及混合物的燃烧动力学特性,利用燃烧促进因子CEF(Combustion Enhancement Factor)来表征燃料外部燃烧促进条件。结果表明:随着氧气浓度的增加,污泥、煤及其混合物失重增加,最大反应速率增大且对应温度减小,各DTG曲线向低温区偏移。提高氧气浓度能显著改善燃烧条件,并导致污泥、煤及混烧表观活化能增大。燃烧促进因子与表观活化能具有良好的线性补偿作用。Combustion characteristics and thermal dynamic characteristics of inferior coal and sludge mixture are researched by Thermo-gravimetric analysis. In order to quantize combustion condition internal and external, definition of Combustion Enhancement Factor （CEF） is put forward. The results indicate that with the increase of oxygen concentration, sludge, coal and its mixture weight loss increases, the maximum reaction rate increases and the corresponding temperature decreases, DTG curves tend to move to lower temperature region. The result shows that oxygen concentration can significantly improve the combustion conditions. The apparent activation energy increases with the increasing of oxygen concentration. CEF increases rapidly with tile increasing of oxygen concentration, which proves the positive role of oxygen concentration on combustion.

关 键 词：热重分析 富氧 燃烧特性 动力学补偿效应 

分 类 号：TK6[动力工程及工程热物理—生物能]