O_2/CO_2气氛下污泥与烟煤混合燃烧特性  

Co-combustion characteristics of sludge and bituminous coal under O_2/CO_2 atmosphere

作　　者：邵志伟[1] 黄亚继[1] 张强[1] 刘培刚 严玉朋[1] 

机构地区：[1]东南大学能源热转换及其过程测控教育部重点实验室,江苏南京210096 [2]枣庄南郊热电有限公司,山东枣庄277100

出　　处：《浙江大学学报（工学版）》2014年第10期1739-1745,1751,共8页Journal of Zhejiang University：Engineering Science

基　　金：国家"973"重点基础研究发展规划资助项目(2011CB201505);国家自然科学基金资助项目(51006023)

摘　　要：在热重分析仪上开展不同参数条件下污泥和烟煤混合燃烧实验,分析污泥掺混比、升温速率和O2/CO2体积比对燃烧特性的影响,进行燃烧动力学分析.结果表明:O2/CO2气氛下,烟煤掺烧污泥的混合燃烧特性表现为污泥与烟煤燃烧叠加的结果;随着升温速率由10℃/min增加至25℃/min,着火和燃尽温度均升高,着火时间延迟和燃尽时间延长,表观活化能升高;随着O2/CO2体积比的增大,着火温度和燃尽温度均降低,着火时间提前且燃尽时间缩短,表观活化能降低,当O2体积分数超过30%时,燃烧性能改善的幅度越来越小.The co-combustion experiments of sludge and bituminous coal with different parameters were conducted on a thermogravimetric analyzer. The effects of sludge mixing mass ratio, heating rate and volume ratio of O2/CO2 were investigated and their co-combustion kinetic parameters were analyzed. Results show that the co-combustion characteristics are the results of joint action of sludge and bituminous coal under O2/CO2 atmosphere. With the heating rate increasing from 10 ℃/rain to 25 ℃/min, the ignition and burnout temperatures of mixed samples increase, the ignition time delays, the burnout time lengthens and the apparent activation energy increases. With the V（O2）/V（CO2） increases, the ignition and burnout temperatures of mixed samples decrease, the ignition time brings forward, the burnout time shortens and the apparent activation energy decreases. The magnitude of co-combustion performance improves more slowly when the volume fraction of O2 exceeds 30%.

关 键 词：热重分析 污泥 烟煤 混合燃烧 O2/CO2气氛 

分 类 号：X705[环境科学与工程—环境工程]