中文摘要：

以山西霍尔辛赫采集的煤样为研究对象,采用有机溶剂（CS2）、有机酸（CH3COOH）、无机酸（HCl）、强氧化剂（ClO2）分别对不同煤体结构煤进行溶剂改造实验,并借助于低温液氮吸附实验,探讨了溶剂改造下构造煤纳米级孔隙的变化规律,认为不同类型的溶剂作用促使不同煤体结构煤中的纳米级孔隙发生差异性变化,这种变化主要因溶剂改造下煤中小分子化合物、表面官能团以及矿物质的变化引起的.研究结果表明：随着煤体破坏程度的增加,各类溶剂的抽提（溶出）率均呈现出增大的趋势,且有机溶剂的抽提率要远大于无机溶剂的溶出率;不同溶剂作用后,煤的BET比表面积和BJH孔容显著增大.其中,有机溶剂作用下破坏程度较大的煤样开放孔数量大于破坏程度较小的煤样,而无机溶剂作用下仅在碎粒煤大孔径阶段开放孔数量明显增加;各类溶剂对煤样均具有一定的扩孔效果,特别是对小孔径段的扩孔效果最为明显.相比而言,有机酸、有机溶剂孔隙改造效果最为显著,无机酸、氧化剂不显著.

英文摘要：

Taking the samples from Huoerxinhe coalfield of Shanxi province as research object, coals with different deformation degrees were extracted or dissolved by different kinds of sol- vents, including organic solvent （CS2）, organic acid （CH3COOH）, inorganic acid （HCl） and strong oxidant （ClO2）. By means of cryogenic nitrogen adsorption experiment, the variation laws of the nano-scale pores during the process of solvent disposition were discussed. It is re- vealed that the nano-scale pores of coals with different coal body structures show various chan- ges after the disposition by different solvents, which is caused by the changes of some organic or inorganic matters in coals, including small molecular organic compounds, surface functional groups and mineral substances. The results show that the yields of solvent extraction （dissolu- tion） rises with the increase of the coal body deformation degree, and the extraction yield of or- ganic solvent is much higher than dissolution yield of inorganic solvent. After the disposition ofdifferent solvents, the BET specific surface area and BJH specific pore volume of coals increase significantly. Under organic solvent extraction, the content of open pores in coals with more serious deformation is higher than those with slight deformation. By comparison, under the in- organic solvent dissolution, the content of open pores only increases in granulated coals with larger diameter. All of the solvents used in the experiment have pore-expanding effect, espe- cially for the pores with smaller diameter. Among them, organic acid （CH3COOH） and organ- ic solvent （CS2） have the most significant reconstruction effect on pores, while the result of in- organic acid （HCl） and strong oxidant （ClO2） is not obvious.