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这是一种老方法,广泛用于研究油田油质变化及预测中,同时也用于煤的结构及成因类型探讨中。1.沥青物质指用有机溶剂从可燃矿产中的抽出物。这些物质主要是树脂、蜡和脂肪酸等经过变化后的生成物。从结构的角度讲,则是与煤分子中缩聚芳环所联接的基和功能团。褐煤沥青中含有较多的蜡,烟煤沥青中则含有较多的烃。使用不同熔剂或用同一溶剂从不同的煤种中所抽出的沥青质,其数量和组成都有极大差别。同一类型的煤,沥青的抽出量随碳化程度的增加
This is an old method, widely used in the study of oil field changes and prediction of oil, but also for the type of coal structure and types of discussion. Asphalt material refers to the use of organic solvents from combustible minerals in the extract. These substances are mainly resin, wax and fatty acids after the change of the product. From a structural point of view, it is linked with the polycondensation aromatic ring of coal molecules and functional groups. Lignite asphalt contains more wax, coal bituminous coal contains more hydrocarbons. The use of different fluxes or the same solvent extracted from different coal asphaltene, its quantity and composition are very different. The same type of coal, bitumen extraction with the increase of carbonation