摘要：为了探究超细煤粉对煤直接液化中供氢环节的影响,利用红外光谱探究超细粉碎后清水营煤粉颗粒化学结构及其变化,并通过粒径分布和转化率对比等实验方法进行分析和研究。结果表明,氧化还原和团聚效应阻碍了超细煤粉颗粒优良性能的利用,采用将超细粉碎过程与煤液化中供氢反应过程相结合的方法,可以避免氧化还原和团聚效应,并且利用了粉碎过程中的机械力化学作用,促进了反应中煤粉的热解,从而提高煤液化转化率,降低煤液化需要的工艺条件。

关键词：超细粉碎；煤直接液化；氧化还原；团聚；机械力化学

Abstract：To investigate the influence of pulverized coal on hydrogen supplied link in direct coal liquefaction,infrared spectrum was used to analyze the chemical structure of pulverized Qingshuiying coal particles and its changes. The experimental methods such as particle size distribution,comparisons of conversion and so on were used to analyze and research. The results show that the oxidoreduction and aggregation restrict the usage of excellent performance of pulverized coal particles.Through combining the processes of ultra-fine grinding and hydrogenation reaction,the designed experiment can avoid oxidoreduction and aggregation effect. The mechanochemistry in ultra-fine grinding is used,and the pyrolysis of coal in reaction is promoted,so that the conversion of direct coal liquefaction is improved,and the requirements of direct coal liquefaction is lowered.

Keywords: ultra-fine grinding；direct coal liquefaction；oxidoreduction；aggregation；mechanochemistry