【摘要】 特高焦油产率煤的富集受煤变质程度、成煤环境等因素的制约。子长矿区瓦窑堡组可采煤层为5号煤层和3号煤层,通过对煤岩样品进行低温干馏试验,得到瓦窑堡组焦油产率平均为13.4%,其中5号煤焦油产率为12.55%,3号煤焦油产率为13.7%,属于特高焦油产率煤层。在空间分布上,高油煤占比达到77%,富油煤占比为23%,零星发育含油煤。研究表明,煤层焦油产率高的原因有3个,一是以低—中等变质程度的气煤为主,高挥发分、高含氢、高含氧;二是显微煤岩组成中有机含量、活性组分平均含量高;三是本区成煤环境以陆相沼泽、湖泊沉积为主,还原程度高。更多还原

【Abstract】 The enrichment of extra-high tar yield coal has been restricted by factors of coal metamorphism degree, coal-forming environment etc. The Wayaobu Formation mineable coal seams in the Zichang mining area have coal Nos.5 and 3. Through low temperature carbonization experiment obtained average coal tar yield is 13.4%, in which, coal No.5 12.55%, coal No.3 13.7%, all belong to extra-high tar yield coal seam. Spatially, high tar yield coal proportion is 77%, rich tar yield coal 23%, sporadically developed oil-bearing coal. The study has shown that there are three causes of high coal tar yield: the first is coal belongs to high volatile matter, high hydrogen and high oxygen gas coal; the second is high mean contents of organic matter and active constituent in macerals; the third is coal-forming environment in the area is mainly limnic bogs and lacustrine deposits with high reductibility.更多还原