摘要
为了满足电力需求,缓解煤炭短缺矛盾,采用ZTC-B型综合(同步)热分析仪对大同无烟煤与大同烟煤分别与浒苔混合燃烧过程进行了热重分析,并对其进行了动力学分析。结果表明:煤与浒苔单独燃烧及混合燃烧过程均可以划分为三个阶段,掺烧时随着浒苔质量分数的增加,主要燃烧阶段活化能升高,综合燃烧特性指数变小;大同无烟煤掺烧25%的浒苔时,二者存在明显的协同效应,相对值可达35%,大同烟煤掺烧25%的浒苔时,二者在480℃左右存在一定的抑制作用,相对值可达-11%;动力学分析表明:采用2个连续一级反应模型,可以很好地描述其掺烧过程,活化能和指前因子存在动力学补偿效应。
In order to meet the power demand and alleviate the downside of coal, the ZTC-B integrated(synchronous) thermal analyzer was used to carry out thermogravimetric analysis of combustion process of Datong anthracite, Datong bituminous coal, enteromorpha and mixture of enleromorpha with Datong anthracite, Datong bituminous coal to analyze dynamics. The results show that the sample combustion and mixture combustion process of the coal and the enteromorpha can be divided into three stages. With the increase of mass fraction of enteromorpha, the activation energy increases, and the comprehensive combustion characteristic index decreases. When Datong anthracite is blended with 25% enteromorpha, there is a significant synergistic effect. The relative value can reach 35%. When Datong bituminous coal is blended with 25% enteromorpha, there is a certain inhibition at 480 ℃, and the relative value can reach-11%. The kinetic analysis shows that the two-stage first-order reaction model can well describe the process of doping, the kinetic compensation effect exists between the activation energy and the pre-exponential factor.
作者
王华山
王跃康
张歆悦
张天航
王春生
WANG Huashan;WANG Yuekang;ZHANG Xinyue;ZHANG Tianhang;WANG Chunsheng(College of Vehicles and Energy,Yanshan University,066000 Qinhuangdao,China)
出处
《煤炭转化》
CAS
CSCD
北大核心
2020年第1期26-32,共7页
Coal Conversion
关键词
无烟煤
烟煤
浒苔
掺烧
热重分析
动力学分析
anthracite
bituminous coal
enteromorpha
combustion
thermogravimetric analysis
kinetic analysis
