燃料化学学报2018，Vol.46Issue(6)：641-648,8.
神木煤与不同黏结煤共热解交互作用规律的研究
Interaction between Shenmu coal and different caking coals during co-pyrolysis
摘要
Abstract
The pyrolysis characteristic of blended coal and the interaction between Shenmu coal ( SMC) and caking coals ( Fat coal-FM, gas coal-QM, coking coal-JM ) were studied by temperature-programmed thermobalance.The pyrolysis kinetics were analyzed using distributed activation energy model (DAEM).The results indicate that the concentrated release rate of moisture increases and temperature corresponding to the release peak of volatile matter(tmax) for coal blends decreases as increasing SMC blending ratio.The inhibition of blended coal is reduced as increasing SMC blending ratio when pyrolysis temperature surpasses the solidified temperature of metaplast (＞460-480 ℃) , indicating a poor bonding behavior of metaplast.In addition, the inhibition of blended coal is enhanced and its bonding behavior is improved with increasing heating rate.The effects of relieving swelling pressure and improving dispersity of metaplast gradually reduce as deepening the metamorphic degree of caking coal from QM, FM to JM, since the corresponding temperature for promoting interaction ( release of volatile ) is below, within, above the plastic temperature range of caking coals, respectively.A comparison of experimental and calculated distributed activation energy model confirms the interaction mechanism of blended coal during co-pyrolysis.关键词
神木煤/黏结煤/共热解/交互作用/分布活化能Key words
Shenmu coal/caking coals/co-pyrolysis/interaction/distributed activation energy分类
化学工程引用本文复制引用
杨志荣,孟庆岩,黄戒介,王志青,李春玉,房倚天..神木煤与不同黏结煤共热解交互作用规律的研究[J].燃料化学学报,2018,46(6):641-648,8.基金项目
The project was supported by the National Key Research and Development Program (2016YFB 0600401-01).国家重点研发计划项目(2016YFB 0600401-01)资助 （2016YFB 0600401-01）
