摘要
通过非等温热重试验,对不同温度及升温速率下,蔚州长焰煤热解特性及动力学参数的变化规律进行分析,研究结果表明:随升温速率升高,长焰煤在对应温度点的失重率先减小后增大,此时同一温度段内的活化能先升高后降低。同一升温速率下,不同温度段的反应级数也不完全相同,且随温度段升高,煤的热解反应活化能及指前因子均呈下降趋势。同时,得到变升温速率下活化能与指前因子之间的线性关系式,验证了二者之间的补偿效应。
Yuzhou long flame coal pyrolysis characteristics and kinetics parameters along with the change of pyrolysis temperature and heating rates were analyzed by non-isothermal thermogravimetric test. The results show that along with heating rates increase, long-flame coal weightlessness rate decrease at first and then increase. The activation energy becomes rise at first and then fall correspondingly. Reaction series is not entirely the same when temperature range changes and coal pyrolysis reaction activation energy and pre-exponential factor are falling with the increase temperature range. The linear relationship of activation energy and pre-exponential factor is obtained under variable heating rates. The compensation effect of activation energy and pre-exponential factor are verified.
出处
《煤炭技术》
CAS
北大核心
2017年第1期308-310,共3页
Coal Technology
关键词
长焰煤热解
升温速率
热重试验
long flame coal pyrolysis
heating rate
thermogravimetric test
作者简介
王子兵（1966-），河北唐山人，副教授，硕士研究生导师，华北电力大学（保定）硕士，主要从事低阶煤提质和低温余热发电技术方面的研究，电子信箱：hblayj@126．com；
通信作者：康润宁．电子信箱：15030501035@163.com．
