镜煤和丝炭的有机地球化学特征对比及其热解性能研究

本文研究结果表明阜新煤田主要煤层煤中丝炭主要是氧化成因，而镜煤则形成于相对还原环 境。成煤环境中的氧化还原条件对镜煤和丝炭各自有机地球化学特征和产烃潜力均有重要的影 响。镜煤和丝炭热解产烃潜力差别很大，但热解过程中产生的烃类的成分组成十分相似，都是以 气态烃为主，其中甲烷含量占８５％以上。因此，这一实验结果证明镜煤和丝炭主要是生气母质而 不是生油母质。

Study on Organic Geochemical Characteristics and Pyrolysis Simulated Test of Vitrain and Fusain

A study of vitrain and fusain in coal seams in Fuxin Coal Basin(Liaoning) by using the recent methods of organic geochemistry and coal petrology shows that the fusian is mostly oxyfusinite, and was formed in oxidizing environ- ment. The redox conditions in coal-forming environment are the important factor affecting the organic geochemical characteristics and the hydrocarbon-formings potential of coal. the main components of hydrocarbons produced by pyrolysis of vitrain and fusain are gaseous hydrocarbons, the content of which range from 88% to 95%. Thus, we can draw the conclusion that the vitrain and the fusain are parent material for gas-formation, but not for oil-formation.