中文摘要：

在煤炭地下气化过程中，热解反应生成的半焦孔隙结构性质是影响气化过程的重要因素．对大雁褐煤、协庄烟煤、昔阳无烟煤及其热解半焦的比表面积、孔容积和孔径进行了测定，总结出了不同煤种、不同热解温度和不同热解气氛下半焦孔隙结构变化的规律．结果表明，半焦的表面结构特性受热解温度和热解气氛双方面的影响，改变热解终温或气氛，孔径分布特征变化幅度不大．

英文摘要：

In the process of underground coal gasification, the pore structures of semicoke are the impact of the important factors. In this paper, the specific surface area, pore volume and aperture of Dayan brown coal, Xiezhuang bituminous coal and Xiyang anthracite were determined, the author have summed up the various laws of the pore structures of semi-coke at various temperatures and in the reactive atmosphere. The results showed that the pore structures of semi- coke were influenced by the temperature and the atmosphere. Changed the end of the temperature and the atmosphere, the aperture had not changed distinctly.