山东金源气煤萃取后的族组成和化学组成研究

STUDY ON GROUP COMPOSITION AND CHEMICAL COMPOSITION OF EXTRACTED GAS COAL OF JINYUAN COALMINE IN SHANDONG PROVINCE

通过超声萃取的方法,采用苯、二硫化碳(CS2)和四氢呋喃(THF)三种溶剂对山东金源气煤的四种不同煤体结构煤(原生结构煤、碎裂煤、碎粒煤和糜棱煤)进行了分级萃取,结合元素分析、工业分析以及柱层析法,对煤样的化学组成和族组成进行了测试.结果表明,随着变质程度的增加,溶剂萃取率有增大的趋势;溶剂萃取作用下,C元素和H元素含量增加,S元素和O元素含量减小,这种变化趋势主要是煤中主要元素相对含量变化的体现;随着煤体破坏程度增加,气煤萃取物中的总烃含量增大,非烃类含量减小,与无烟煤呈现相反的变化趋势;尽管煤体结构不同,但各煤样的不同溶剂萃取物的族组分相对含量均呈现一致性的对比关系.

By means of the fractional extraction method assisted by ultrasonic vibration, four gas coal samples with different deformation degree from Jinyuan coalmine, Shandong province extracted by three solvents, including benzene, carbon disulfide（CS2） and tetrahydrofuran （THF） under the condition of room temperature, and further the group compositions and chemical compositions of coal samples were measured by column chromatography method, ultimate and proximate analysis method. The results show that the extraction rate shows the increasing trend with the increasing of the deformation extent of coal body structure： under the effect of solvent extraction, the content of element C and H increase but that of element S and O decrease. The tendency is mainly caused by the change of the relative content of each element; as the deformation degree of coal body structure increases, the content of total hydrocarbon increases but the content of non-hydrocarbon decreases in the extracted gas coal. It shows the opposite trend of anthracite with different deformation degree. Although the coal body structure is different, the relative content of group composition of different solvent extraction in each coal sample shows a consistency tendency.