摘要
采用微型流化床热分析仪(MFBRA),探讨了不同煤种及其混煤在相同的热解条件下甲烷的析出特征及其生成动力学.结果表明,在相同的热解条件下,煤热解过程中甲烷的开始析出温度随煤中挥发分的升高而降低,甲烷的最大析出速率及甲烷的生成总量都随煤中挥发分的升高而增加;煤热解反应的活化能(E)随煤中挥发分的升高而降低,表示煤的挥发分愈高,煤的热解愈容易进行;配煤改变了单种煤的煤质特征,其水分、挥发分和灰分等煤质指标等于单种煤相应煤质指标的加权平均值,但混煤热解的活化能(E)并不等于配合单种煤活化能(E)的加权平均值.
The micro fluidized bed reaction analyzer（MFBRA）was used to research the emission characteristics and the formation kinetics of methane which is released from the different kinds of coal and the coal blended during the process of coal pyrolysis. The result shows that in the same pyrolysis condition,as the volatile content of coal increased, the beginning temperature of the methane to be released decreased, the maximum releasing rate and the total amount of methane increased, the activation energy （E） of its pyrolysis decreased, which means that the higher the volatile content of coal ,the easier to its pyrolysis reaction. Blended coal can change the quality index of the single coal. The quality index of the coal blended as the water content, vola- tile content and the ash content etc equals to its weighted average of corresponding single coal. But the activation energy （E） of coal blended doesn＇t equal to the weighted average of corresponding single coal.
出处
《煤炭转化》
CAS
CSCD
北大核心
2013年第2期25-27,32,共4页
Coal Conversion
基金
煤炭资源清洁利用与矿山环境保护湖南省重点实验室开放基金资助项目(COAL201104)
关键词
流化床
热解
混煤
活化能
甲烷
fluidized-bed, pyrolysis, coal blended, activation-energy, methane
