含油污泥大物料热重实验研究  

Macro thermogravimetric analysis on oil sludge

作　　者：谢磊[1] 李爱民[1] 高宁博[1] 马蒸钊[1] 

机构地区：[1]大连理工大学工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《热力发电》2014年第3期52-57,64,共7页Thermal Power Generation

基　　金：国家自然科学基金青年基金(51006018);中央高校基本科研业务专项基金(DU773LAB08);多相复杂系统国家重点实验室开放基金(MPCS-2011-D-11)

摘　　要：为了更加接近于实际过程的物料热解析出特性，在自行设计的平台上进行了大物料含油污泥的热重实验研究。结果表明，随着升温速率和粒径的增加，含油污泥的主要失重区间向高温区域移动，其热重的活化能E为14．4～35．81kJ／mol，指前因子A为37．87～844．1S^-1，E与1nA之间呈良好的线性关系，符合动力学补偿效应；与微量热重相比，含油污泥大物料热重的失重特性刚开始滞后于微量热重，随后这种趋势逐渐减弱，大物料热重反应活化能与指前因子数值均小于微量热重。To investigate the actual pyrolysis characteristics of oil sludge as much as possible, a laboratory scale macro thermogravimetric analyzer was designed to conduct the relative experiments. The effects of heating rate and particle size on thermal behaviour of oil sludge were analyzed,and the results were compared with that obtained by the conventional thermogravimetric analyzer. Moreover, the distributed activation energy kinetic model was employed to obtain the reactive kinetic parameters. The results show that, with an increase in heating rate and particle size, the main weight loss occurred at higher temperatures;the activation energy E was between 14.4 kJ/mol and 35.81 kJ/mol,and the pre-exponential factor A ranged from 37.87 s^-1 to 844.1 s ^-1, indicating there was good linear relationship between E and lnA,which satisfied the kinetic compensation effect;at the very beginning, weight loss of the oil sludge on the macro thermogravimetric analyzer lagged behind that on the micro thermogravimetric analyzer,but then this trend gradually weakened;both the reaction activation energy and pre-exponential factor obtained from the macro thermogravimetric analyzer were smaller than that from the micro thermogravimetric analyzer.

关 键 词：含油污泥 热解 大物料热重 动力学分析 微量热重 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]