煤粉与废线路板混合燃烧特性  

Combustion characteristics of the mixture of coal powder and printed circuit board scraps

作　　者：郝娟[1] 张洪[1] 王兴涌[1] 陈佳宝[1] 杨可洋[1] 赵博[1] 

机构地区：[1]中国矿业大学化工学院煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《中国矿业大学学报》2012年第3期493-497,503,共6页Journal of China University of Mining & Technology

基　　金：国家自然科学基金委员会创新研究群体科学基金项目(50921003);国家自然科学基金项目(50676103)

摘　　要：利用热重方法研究了煤粉与废线路板的单独及混合燃烧特性.研究结果表明,煤粉与废线路板的混烧特性总体上表现得较为复杂,是两者共同作用的结果.废线路板单独燃烧时,热失重过程的TG曲线有两个明显的拐点,DTG曲线为双峰结构,在200～600℃范围内是剧烈失重过程;当废线路板与煤粉混合燃烧时,随着煤粉含量的增加,TG曲线变为一个拐点,DTG曲线转为单峰结构.利用Coats-Redfern方程求出了煤粉与废线路板单独和混合燃烧反应动力学参数,混合燃烧过程基本分为两个主要反应阶段,混合反应的反应级数在1～3.33之间,活化能在73.1～346MJ/mol之间,随着煤粉掺入量的增加,活化能降低.Thermo-gravimetric-analysis （TGA） was used to analyze the combustion characteris- tics of printed circuit board scraps（PCBs）, coal and their mixture. The results indicate that the combustion characteristics of the mixture of PCBs and coal powder are complex because of co- action of PCBs and coal. There are two main stages in the process of combustion of PCBs. The TG curve of PCBs has two turning-points, and the DTG curve appears double-peak structure, which show that there was a violent loss of weight at 200--600 ℃ With the increasing of coal powder content, the TG curve appears one turning-point and the DTG curve has one peak while combustion of the mixture. The reaction mechanism equations and parameters of the single and mixture combustion are educed from TG data using Coats-Redfern method. The reaction order ranges from 1 to 3.33, and the reaction activation energy is 73.1-346 MJ/mol. The activation energy decreases with the increasing of coal powder content.

关 键 词：煤粉 废线路板 燃烧特性 

分 类 号：TQ53[化学工程—煤化学工程]